Race in two stages. I: Milano-Pavia-Voghera-Tortona-Alessandria-Acqui = 85 miles;

II: Acqui-Savona-Alassio-Sanremo = 113 miles.
Speed trial for 1 km in Sanremo, from stationary start; overall result as sum of 2 times. Competitors: 14;
finishers at Acqui: 13, at Sanremo: 11.

1st class: light cars or vehicles with chassis costing 4,000 to Itl8,000
1st GAGLIARDI Giovanni Diatto-Clément 10/12 HP
1st leg 3:54.58,0; 2nd leg 5:22.15,0; total 9:17.03,0.

1 km race
2nd GAGLIARDI Giovanni Diatto-Clément 4.46,2

TOURISTGOLD CUP(I)15-25 May 1906

Auto Club Milan. Rally in 11 stages over 2,460 miles. Route: Milan-Bologna, Bologna-Rome, Rome-
Naples, Naples-Rome, Rome-Florence, Florence-Genova, Genova-Turin, Turin-Milan, Milan-Udine, Udine-
Brescia, Brescia-Milan. Speed: min. 30 kph, max. 40 kph. Competitors: 48, representing 19 auto
manufacturers. With the participation of Vittorio Diatto.

Overall result
2nd VERCELLONE Gregorio Diatto-Clément 20/24 HP
13th COLENET Léon Diatto-Clément 20/24 HP

The Diatto-Clément 20/24 HP driven by Vercellone won a prize of Itl 5,000, the President’s Cup (Milan A.C.), the President’s
Gold Medal (Naples A.C.), the Award of the Naples Società Italiana Darracq, a prize from the Rome A.C. and the prize of
the Veloce Club, Perugia.

HERKOMER COMPETITION (D)5-12 June 1906

Route of 1,125 miles from Frankfurt to Innsbruck, climbing at Semmering and speed trial on a 3 mile track.
Competitors: 135, only one Diatto-Clément.

Overall result
1st n. a. Diatto-Clément 20/24 HP
Winner of the Gold Medal and Plaque for finishing the race with no penalties.

LUGANO-SAN GOTTARDO COMPETITION (CH) 19 August 1906

Overall result
1st n. a. Diatto-Clément 20/24 HP
2nd n. a. Diatto-Clément 20/24 HP

BOLOGNA GRANDPRIX (I)October 1906

Organized by: Emilian Automobile Club.

Small car class
1st BUZIO Felice Diatto-Clément 12/16 HP

Light car class
1st VERCELLONE Gregorio Diatto-Clément 20/24 HP

CANNES CUP (F)9 March 1907

Official Consumption Record.

Overall result
1st n. a. Diatto-Clément 20/25 HP

With GT body work, the Diatto-Clément consumed 10 litres in 100 km, taking first place.

VERONACUP(I)19 March 1907

5 km race.
Start at ninth km of the Pozzo-Tombetta straight, arrival at 4th km.
Prizes: 1st place: Itl 1,000, 2nd place: Itl 500.

1st class
3rd VACCARI Roberto Diatto-Clément 12/16 HP 5.00,8

2NDTARGAFLORIO(I)22 April 1907

Organized by: the Committee for Sporting Events and Festivities.
Circuit: Madonie, over km 148.823 x 3 laps = total km 446.469.
Start and finish: Bofornello.
Total prize money: Itl 100,000.
Competitors: 56, 45 started, 28 finished.

Overall result
18th BUZIO Felice Diatto-Clément 9:20.05,0

ONEKMRACE(I)23 July 1907

Oderzo, flying start: Treviso-Udine.
Organized by: Opitergina Sports Union.

1st class: chassis up to Itl 10,000
Gold Medal to the winner
3rd ZILIOTTO Diatto-Clément 54,2

SPEED CUP,BRESCIA(I)2 September 1907

Route: Brescia-Montichiari-Castiglione-Lonato-Brescia, 8 laps of 40 miles = 320 miles.
Formula: 30 litres of fuel every 100 km (62.5 miles).
Competitors: 14, finishers: 6.
Withdrew: Buzio Felice (mechanic: Restelli) in the Diatto-Clément, on the 3rd lap.

CONEGLIANO VENETOCUP (I)6 October 1907

Route: Godega-Ponte dei Giai, 5 km.
Flying start.

1st class: chassis Itl 10,000
2nd ANGELI Guido Diatto-Clément 12/16 HP 4.13,0
3rd ZILIOTTO Diatto-Clément 4.27,6

VERONA RACE TRACK (I)15 March 1908

Route: Crocioni di Bussolengo-Croce Bianca-Bussolengo-Crocioni-Borgo Milan, arrival at 1.2 km from
San Zeno.
Organizing Committee: President Leonino of Zara, Dr Nello Prosperini, Dr Guido Ravà Sforni, Colonel
Pietro Albertini, Attilio Angeli, Colonel Vittorio Cavazzocca.
Class prizes: winner: vermeille plaque, 2nd place: silver plaque, winning mechanic: Itl 100.
Start: 13, finished: 8.
Withdrew: Compostella Eugenio driving a Diatto-Clément, close to Croce Bianca.

1st class: max. bore 110 mm, weight 950 kg
3rd VACCARI Roberto Diatto-Vaccari 20.25,0

PADOVA-BOVOLENTA(I)10 April 1908

Padova-Bovolenta straight, 10 km record.
Start: 29, finishers: 27.

2nd class: max bore 90 mm, minimum weight 750 kg
6th MERLUZZI Antonio Diatto-Clément
Times: out 9.16,0; back 8.52,8; average 9.04,4.

3rd class: max bore 100 mm, min. weight 850 kg
3rd ANGELI Guido Diatto-Clément
Times: out 11.21,8; back 8.20,8; average 9.51,3.
Due to the lack of policing, a huge crowd moved onto the road, causing several accidents.
Longoni, driving a Junior, crashed to avoid hitting a truck crossing the road at Casalserugo.
The driver walked away unscathed but the mechanic, Antonio Janicelli of Milan, was seriously injured.
After the finishing line, driver Dal Torso of Udine steered into a crowd to avoid hitting a car still on the
road. One spectator was killed and 6 injured.
The accident led to questions in the House, raised by the M.P. Alessio.

ST.PETERSBURG-MOSCOW (RUS) 19 May 1908

Distance: 430 miles. 9 finished, 19 withdraw.

Overall result
6th PRIMAVESI Diatto-Clément no. 25 13:08.12,0

MILETIME TRIAL, MODENA (I)9 May 1909

Modena-Navicello straight, 1 mile.
Competitors: 28, finishers: 25.

4th class
11th COLORNI Giulio Diatto-Clément 1.02,8

BROOKLANDS (GB) 1910

England. Diatto took part in a speed trial on the Brooklands race track, with an experimental streamlined
chassis and 15.9 litre engine.

1STPARMA-POGGIO DIBERCETO(I)28 September 1913

Uphill event organized by Pro-Parma.
Route: Parma (52 m), Fornova Taro km 23 ( 155 m), Monte Cassio pass km 36 (882 m), Berceto km 52 (790
m), Poggio di Berceto km 53 (841 m). Competitors: 26, finishers: 24.

2,500 cc class
3rd REZZAGHI C. Diatto 55.19,0

9THTARGAFLORIO(I)24-25 May 1914

Organized by the Sicilian Auto Club.
Sicilian rally, Palermo.
1st leg:269 miles: Palermo-Messina-Catania-Siracusa.
2nd leg: 340 miles: Siracusa-Noto-Modica-Girgenti-Marsala-Trapani-Alcamo-Palermo.
Total: 609 miles. Competitors: 31, finishers: 8 (finishers after 1st leg: 19).

Overall result
8th RIGOLETTI N. Diatto

TUSCANAUTOMOBILE RACETRACK (I)21 June 1914

Route: San Pietro a Sieve-Scarperia-Giogo-Fiorenzuola-Covigliano-Passo della Futa-Montecarelli-San
Pietro a Sieve.
4 lap of 40 miles = 160 miles. Min. time 6 hours (average 27 mph), max. 8.4 hours.
Tolerance: 1 minute under or over.
Competitors: 40, finishers: 32.

1st category: 2,000 cc class
1st SILVANI Eugenio 2-litre Diatto

2nd category: 3,500 cc class
4th SPADONI Augusto 3-litre Diatto

2ND PARMA-POGGIO DI BERCETO (I)25 June 1914

Uphill race organized by Pro-Parma.
Route: Parma-Fornova Taro-Poggio di Berceto, a total of 33 miles. Competitors: 34, finishers: 24.

2nd category: class up to 1,500/2,500 cc
15th GATTI Guido Diatto 49.07,0
17th REZZAGHI C. Diatto 55.03,0

10THTARGAFLORIO(I)23 November 1919

Organized by the Sicilian Auto Club.
4 laps of the Madonie medium race track, a total of 270 miles.
Route: Cerda-Caltavuturo-Polizzi-Collesano-Campofelice-Cerda, 67.5 miles.
Competitors: 20, finishers 5.

Overall result
3rd GAMBONI Domenico Diatto 8:33.28,4

MUGELLO RACETRACK (I)13 June 1920

Organized by Florence Auto Club.
In 1914, another raced took place on this track, called for the occasion the Tuscan Automobile Race Track

-see above.
Total of 6 laps of 40 miles = 240 miles.
Competitors: 24, finishers: 5.

Race category: 3,000/over 3,000 cc class

2nd TARABUSI Augusto 3-litre Diatto 7:40.35,6
Average speed of around 40 mph.

1ST AOSTA-GRAN SANBERNARDO (I)29 August 1920

Uphill race organized by Aosta Auto Club.
Route: Aosta-Gran San Bernardo (Nursing Home).
Distance: 19 miles, climb: 6,167 feet.

Race class
1st CONELLI Carlo Alberto 3-litre Diatto

11THTARGAFLORIO(I)20 October 1920

Organized by the Sicilian Auto Club. 4 laps of the Madonie for a total race distance of 270 miles. Route:
Cerda-Caltavuturo-Polizzi-Collesano-Campofelice-Cerda. The competitors included: Peter De Paolo and
Peyron in a Diatto.

1STROMECRITERIUM(I)15 January 1921

Uphill race organized by Rome Auto Club. Vermicino-Frascati-Rocca di Papa-Madonna del Tufo. 9.375
miles, climb: 1,525 feet.

Race class
3rd GAMBONI Domenico Diatto 3,000 13.56,0

12THTARGAFLORIO (I)29 May 1921

Organized by the Sicilian Auto Club.
4 laps of the Madonie for a total race distance of 270 miles. Cerda-Caltavuturo-Polizzi-Collesano-
Campofelice-Cerda.
The competitors included Domenico Gamboni in a Diatto 4 DS. He did not finish.

Overall result
16th GHIA Diatto

6TH CONSUMACUP (I)11 June 1921

Uphill race organized by Florence Auto Club.
Pontassieve-Passo della Consuma, 9.275 miles, climb: 3,000 feet.
Among the competitors: Meregalli in a Diatto.

1STBIELLA-OROPA(I)17 July 1921

Uphill race organized by Biella Auto Club.
Route: Biella-Santuario d’Oropa.

6.9miles, climb: about 2,500 feet.

Race class
1st GAMBONI Domenico 3-litre Diatto 11.41,6
Average km/h 35.306 mph.

6THSUSA-MONCENISIO(I)21 August 1921

Uphill race organized by the Turin Auto Club. Distance: 13.75 miles.

1,500 cc class
1st CONELLI Franz Diatto-Bugatti 24,4

GENTLEMEN’sGRANDPRIX,BRESCIA (I)11 September 1921

Organized by the Brescia Auto Club.
Brescia race track. Route: Fascia d’Oro-bivio Ghedi-Montichiari-Fascia d’Oro.
20 laps of 10.8 miles = total of 216 miles.

Class A
1st CONELLI Carlo Alberto Diatto-Bugatti 3:10.12,0
Average speed of 68.218 mph.
Fastest lap: Conelli in 8.58,4 at 72.759 mph.

2ND ROME CRITERIUM (I)15 October 1921

Uphill race organized by the Rome Auto Club. Distance: 6.5 miles; Frascati-Rocca di Papa, climb of over
1,000 feet.

Race class, Tourism
1st GAMBONI Domenico 3-litre Diatto 8.13,2
Average speed: 46.532 mph.

INDIANAPOLIS (USA)1920s

A Diatto S, driven by Ed Parker and Ralph di Palma, took part.

2NDALPINECUP(I)1922

International rally organized by U.C.A.M. – Unione Ciclo Auto Moto.
Cesare Schieppati took part, driving a Diatto 20.

CENTRAL ITALY RACE TRACK (I)1922

Class up to 3,000 cc
1st GAMBONI Domenico 3-litre Diatto

13THTARGAFLORIO(I)2 April 1922

Track: Madonie, total 269 miles.
Competitors: 42, including three 2-litre Diatto 20 S Type with short touring chassis in the 1,501-2,000
class. None finish (drivers: Massola, Guido Meregalli, Domenico Gamboni).

6TH PARMA-POGGIO DI BERCETO (I)14 May 1922

Uphill race organized by Pro-Parma.
Distance: 31.8 miles.

2,000 cc class
1st MEREGALLI Guido Diatto 20 S

MUGELLORACETRACK(I)18 June 1922

Florence Auto Club. Route: S. Pietro a Sieve-Scarperia-Giogo-Fiorenzuola-Montecarelli-S. Pietro a Sieve.
6 laps of 40.56 miles = total 243.36 miles.

On the start line: Bacini driving a 2-litre Diatto.

7THSUSA-MONCENISIO(I)23 July 1922

Uphill race organized by Turin Auto Club. Distance: 14.3 miles; Route: Susa-Moncenisio, climb of over
4,000 feet.

2,000 cc class
2nd PONTICELLI Diatto 20
Just three seconds behind the class winner.

ITALIANGRANDPRIX(I)10 September 1922

Monza race track. 80 laps of 6.25 miles = 500 miles.
Competitors: 8, finishers: 3.
Meregalli drove a 2-litre Diatto 20 S 2 (valve failure on the 52nd lap) and Alfieri Maserati – assisted by
Ernesto Maserati – drove a Diatto 20 S (accident at Lesmo corner), with average speeds of over 100 mph.

GARDALAKERACETRACK (I)15 October 1922

Organized by Brescia Auto Club.
Distance: Salò-Zette-Tormini-Salò = 7.725 mph.
20 laps of 7.725 miles = total 154.5 miles.
Competitors:16, finishers 10.

Overall result
1st MEREGALLI Guido Diatto 20
Time 3:01.38,0 -average 50.523 mph.
Fastest lap: Meregalli (lap 13) in 8.58,6 -at 51.633 mph.

3RD ROME CRITERIUM (I)15 October 1922

Uphill race organized by Rome Auto Club. Vermicino-Rocca di Papa.
Distance: 9.3 miles, climb: 1,500 feet.

2,000 cc class
1st GAMBONI Domenico 2-litre Diatto 11.48,0
Average speed of 47.053 mph.

AUTUMN GRAND PRIX (I)22 October 1922

Monza race track. 40 laps of 6.25 miles = 250 miles (full circuit).
Competitors: 22, finishers: 8.

3,000 cc class
1st MASERATI Alfieri 3-litre Diatto 3:11.19,6
Average speed of 78.339 mph, outright winner.

6THFLORIO CUP(I)19 November 1922

Race track: Madonie. Route: Cerda-Caltavuturo-Polizzi-Collesano-Campofelice-Cerda. 4 laps of 67.5
miles = total of 270 miles.
3 Diatto at the start line. None finish. Alfieri Maserati broke the sump when lying in third position, Paolo
Arnone had a puncture and then mechanical problems. Meregalli crashed after 10 miles, breaking his arm.
The mechanic was killed.

14THTARGAFLORIO(I)15 April 1923

Race track: Madonie. 4 laps of 67.5 miles = total of 270 miles.
Competitors:17, finishers: 8.
Alfieri Maserati driving a 3-litre Diatto 20 S is forced to withdraw on the 3rd lap, while lying second.

Overall result
8th MORA 2-litre Diatto

1ST CREMONA RACETRACK (I)6 May 1923

Cremona Auto Club. Route: Cremona-Piadena-Palvareto-Cremona. 3 laps of 39.337 miles = 118 miles.
Competitors:15, finishers: 8.
Tazio Nuvolari took part, driving a 3-litre Diatto, with his mechanic Telemaco Vareschi.

Race category: 1,500/3,000 cc class
2nd MASERATI Alfieri Diatto 20 S 1:37.21,4

7TH PARMA-POGGIO DI BERCETO (I)13 May 1923

Uphill race organized by Pro-Parma.
Parma-Fornova Taro-Monte Cassio-Berceto-Poggio di Berceto; 31.875 miles, climb of 2700 feet.
TazioNuvolaridrove a 3-litreDiatto.

Race class
3rd MASERATI Alfieri Diatto 20 S 37.44,6

ROCCA ROFFENO UPHILL RACE, BOLOGNA (I) 31 May 1923

Organized by the Bologna Auto Club.

Race class
1st MASERATI Alfieri Diatto 20 S

Tourism class
1st MEREGALLI Guido Diatto 20

4TH MUGELLO RACETRACK (I)10 June 1923

Organized by Florence Auto Club. 6 laps of 40.5 miles = 243 miles. Competitors: 20, including Bacini
driving a Diatto 20 S and Alfieri Maserati driving a Diatto 20 S; finishers: 12.

8TH CONSUMA CUP (I)17 June 1923

Uphill race organized by Florence Auto Club. Pontassieve-Passo della Consuma; 9.3 miles, climb of 2,700

1STSAVIORACETRACK(I)17 June 1923

Ravenna Auto Club. Competitors: 15, finishers: 6.
Winner: Giormelli driving a Diatto 20 S.

8THSUSA-MONCENISIO(I)22 July 1923

Uphill race organized by Turin Auto Club .
Distance: 13.8 miles, climb: 4,600 feet.

Overall result
1st MASERATI Alfieri-MASERATI Ernesto 4.5 special Diatto 19.05,0
Average speed of 43.176 mph; new speed record.

4THAOSTA-GRAN SANBERNARDO (I)29 July 1923

Uphill race organized by Aosta Auto Club.
Distance: 19 miles, climb: 6,000 feet.

Sport class, Tourism
1st MASERATI Alfieri 4.5 special Diatto 33.18,6

1STPISTOIAHILLSCUP(I)19 August 1923

Uphill race. Capodistrada-Passo della Collina, 9.6 miles. Competitors: 14.
Luigi Parenti drove a Diatto 20 S.

Overall result
1st BRILLI PERI Gastone Diatto 20 S 13.04,6
Average speed: 44.482 mph.

3RDALPINECUP(I)23 August 1923

International rally organized by U.C.A.M. – Unione Ciclo Auto Moto.
A rally in 5 stages over the Alps. Distance: 1,758 miles.

Competitors: 44, finishers: 24, with 4 Diatto.
All finish.

MONTENERO RACETRACK (I)26 August 1923

Livorno Auto Club. Ardenza-Castellaccio-Romito-Ardenza. 8 laps of 14 miles = 112 miles.
Fastest lap: Brilli Peri Gastone driving a Diatto in 18.13,0 -46.317 mph.

2ND PONTEDECIMO-GIOVI(I)2 September 1923

Uphill race organized by Genova Auto Club. Distance: 6 miles, climb: 1,200 feet.

Race class, Tourism
2nd BOCCHI Antonio 2-litre Diatto 9.38,6

2NDSPANISHGRANDPRIX(SP)28 October 1923

Terramar Race Track. 248 miles.

Overall result
4th DOS SANTOS José-MORA Diatto 20 S no. 11

GARDA LAKE RACE TRACK (I)25 November 1923

Brescia Auto Club. Salò-Zette-Tormini-Salò; 20 laps = total 154.5 miles. Competitors: 18, finishers: 6.

Race category: 1,100/1,500/2,000 class
1st MEREGALLI Guido Diatto 20 S 3:20.23,8
Average speed of 46.181 mph.

4THALPINECUP(I)1924

Winner: the Glacier Cup.

2,000 cc class
1st SCHIEPPATI Cesare Diatto 20 S

MONTI CIRMINIRACE TRACK (I)1924

Overall result
1st n. a. 2-litre Diatto

IST TERNI-PASSO DELLASOMMA (I)1924

Uphill race organized by Terni Auto Club.

Overall result
1st MASERATI Alfieri Diatto 20 S

TOURISM GRAND PRIX, BARCELONA (SP) 1924

Overall result
1st n. a. 2-litre Diatto
3 cups to the winner.

STOCKHOLM UPHILL RACE (S) 1924

Overall result
1st n. a. 2-litre Diatto

15THTARGAFLORIO(I)27 April 1924

Organized by the Sicilian Auto Club.
Madonie race track, 4 laps of 67.5 miles = 270 miles. Competitors: 37, finishers: 21.

Overall result
12th MASERATI Alfieri Diatto 20 S

7THFLORIOCUP(I)27 April 1924

Madonie race track, 5 laps of 67.5 miles = 337.5 miles.
Included in the Targa Florio.
An extra lap compared to the Targa race.
Competitors: 37, finishers: 16.

Overall result
11th MASERATI Alfieri Diatto 20 S

MANTOVA RACE TRACK (I)4 May 1924

Mantova Auto Club. Belfiore race track: Dosso del Corso-Belfiore-Curtatone-Montanara-Dosso del Cor-
so. 20 laps of 8 miles = 160 miles.

3-litre class
1st NUVOLARI Tazio 3-litre Diatto

8THPARMA-POGGIO DIBERCETO (I)11 May 1924

Uphill race organized by Pro-Parma.
Race distance: 31.8 miles, climb: 2,750 feet.
The competitores included: Antonio Bocchi in a Diatto 20 S failed to finish.

2-litre class
1st MASERATI Alfieri 2-litre 8-cylinder Diatto

REBASSADA UPHILLRACE (SP)25 May 1924

Barcelona, Spain. Alfieri Maserati, registered to drive a 2-litre engine Diatto, inexplicably replaces the
engine over night with a 3-litre.
Ferdinand De Vizcaya made an official protest and seven months later Maserati was disqualified from
racing for 5 years along with Diatto (this ban was lifted).

Overall result
1st n. a. 2-litre Diatto

24 HOUR MONZA GRANDPRIX (I)14-15 June 1924

Monza race track. 24-hour race from 6.00 p.m. on 14 June to 6.00 p.m. on 15 June.
Competitors: 19, finishers: 12.

Tourism category: 2-litre class
1st SCHIEPPATI Cesare-FERRETTI G. Diatto 20 S -2.5 meters frame
A total distance of 1,420 miles was covered.

9THCONSUMA CUP (I)22 June 1924

Uphill race organized by Florence Auto Club.
Race distance: 9,312 mile, climb: about 2,700 feet.

2-litre class
1st ROGAI Damiano 2-litre Diatto 13.11,8

2NDPISTOIAHILLSCUP(I)6 July 1924

Uphill race. Capodistrada-Passo della Collina; 9.68 miles, climb: about 2,700 feet.

2-litre class
1st MASERATI Ernesto 2-litre Diatto

SAN SEBASTIAN GRAND PRIX (SP)27 September 1924

Lasarte race track. 35 laps for a total of 388 miles.
Alfieri Maserati (assisted by Luigi Parenti) driving a Diatto 20 S -long chassis, was in third place when
the transmission broke on the 28th lap.

GARDA LAKE RACETRACK (I)9 November 1924

Organized by Brescia Auto Club.
Salò-Zette-Tormini-Salò. 20 laps = total of 154 miles. Competitors: 21, finishers: 13.

Overall result: 1,100/1,500/2,000 cc class
1st MEREGALLI Guido 4-cylinder Diatto 20 S 3:02.30,2 -average speed of 50,280 mph.
5th MASERATI Ernesto-PARENTI Luigi Diatto 20 S
Fastest lap: Meregalli in 8.51,4 -51.808 mph.

2ND TERNI-PASSO DELLA SOMMA (I)1925

Uphill race organized by Terni Auto Club.

Overall result
1st De STERLICH Diego Diatto 20 S

LIMONEST UPHILL RACE (F)Spring 1925

2,000 cc class
1st LECOT François Diatto 20 S

Overall result
2nd LECOT François Diatto 20 S
Equal second: Morel driving Amilcar CGS, just 32 seconds behind the winner.

TORRICELLE UPHILL RACE(I)22 March 1925

Organized by Verona Auto Club.
Porta S. Giorgio (former shooting range)-Torricella Massimiliana, total 3 miles.
Competitors: 19, finishers: 17.

Race class, Tourism
2nd TREVISANI Augusto Diatto 20 S 4.44,6

1STMILANEXHIBITIONCUP(I)19 April 1925

Monza Race Track.
A one hour race until the total fuel allocation (18 litres) ran out.
Distance plus speed.
Competitors: 40, finishers: 34.

Overall result
1st n. a. Diatto 30

2ND SORRENTO-SANT’AGATA (I)10 May 1925

Uphill race organized by Naples Auto Club. Distance: 7.5 miles, climb 1,200 feet.

Race class, Tourism
3rd De STERLICH Diego Diatto 20 S 11.42,0

MUGELLO RACETRACK (I)31 May 1925

Organized by Florence Auto Club. Maschere-Barberino del Mugello-Montecarelli-Maschere, 20 laps of

11.3 miles = 226 miles. Competitors: 25, finishers: 10 (3 outside max time limit).

Overall result: 1,500/2,000/over 2,000 class
3rd STEFANELLI Ugo Sisto 2-litre Diatto 5:33.48,4

KING’SCUP(I)14 June 1925

Monza race track. 50 laps (fast track) of 2.8 miles = 140 miles.
Knock-out and handicap final. Finishers: 20.

Race class, Sport
2nd SCHIEPPATI Cesare Diatto 20 S
Handicap time 1:51.27,8; real time 1:49.56,0.

LEMANS24-HOUR(F)20-21 June 1925

3rd 24-hour endurance race held at Le Mans, organized by the Ouest Automobile Club on the 11 mile
Sarthe race track. All finishers qualified for the following year.
Two 3-litre Diatto 25 Type and two 2-litre Diatto 30 Type took part.
The 25 Type number 13 was driven by Lecot-Renaud; number 14 was driven by Rubielti-Vesprini.
The 30 Type number 20 was driven by Dolle-Giraux; number 21 was driven by Garcia-Botta.

Overall result
5th GARCIA-BOTTA Diatto 30 Type number 21

2ND VITTORIO VENETO-CANSIGLIO (I)21 June 1925

Uphill race organized by Treviso Auto Club. Route: Fregona-Crocetta del Cansiglio, total 9 miles.

Race class, Tourism
2nd STEFANELLI Ugo Sisto Diatto 20 S 13.55,2

Uphill race organized by Turin Auto Club.
Route: Susa-Moncenisio; 13.8 miles, climb of about 4,600 feet.

4,500 cc class
1st De STERLICH Diego 4.5-litre Diatto 18.48,4
Average speed of 44.066 mph, beating the previous lap record of Alfieri Maserati (winner in 1923) in the same car by 17
seconds.

6THAOSTA-GRAN SAN BERNARDO (I)26 July 1925

Uphill race organized by Aosta Auto Club.
Aosta-Gran San Bernardo (Nursing Home). Distance: 21.25 miles, climb: over 6,000 feet.

Race category, Tourism: 4,500 class
1st De STERLICH Diego 4.5-litre Diatto 32.51,0
Average speed: 39.151 mph.

MONTENERORACETRACK (I)16 August 1925

Organized by: Livorno Auto Club.
Ardenza-Castellaccio-Romito-Ardenza, 10 laps of 14 miles = 140 miles. Finishers: 7.

Race class
2nd AYMINI Giulio 2-litre Diatto 3:20.52,2

3RDPISTOIAHILLSCUP(I)23 August 1925

Uphill race. Capodistrada-Passo della Collina, 9.7 miles, climb: 2,700 feet.

4,500 cc class
2nd De STERLICH Diego 4.5-litre Diatto 12.15,2

ITALIANGRANDPRIX(I)6 September 1925

Monza race track, 5th year.
80 laps of 6.45 miles = total 516 miles. Competitors: 15, finishers: 8.
Two 8-cylinder Diatto lined up but Rubietti was left on the starting grid. Emilio Materassi, driving a 2-
litre 8-cylinder supercharged Diatto, was forced into the pits while in 5th place, losing vital seconds.
He retired after about 250 miles.

APUANO RACE TRACK (I)22 November 1925

Uphill race organized by Carrara & Massa Auto Club. Carrara-Massa-Avenza-Carrara. 8 laps of 12.6 =
100.8 miles. Competitors: 24, finishers: 13.

Race class
2nd DURAZZO 2-litre Diatto 2:10.30,0

CHRISTMASCUP (I)25 December 1925

Uphill race. Route: Loreto-Aprutino-Penne, 7.8 miles.

Overall result
1st De STERLICH Diego 4.5-litre Diatto
Record time: 9.2,0 at an average speed of 51.731 mph.

KLAUSEN RACE (CH) 1926

Diego De Sterlich drove a Diatto.

Monza race track. A one-hour race untill the total fuel allocation (18 litres) ran out.
Distance and speed. Finishers: 14.

Speed and fuel consumption formula
1st FRANCO Diatto 20 S 1:06.27,4
Average speed: 62.07 mph.

17THTARGAFLORIO(I)25 April 1926

Organized by the Sicilian Auto Club. Race track: Madonie.
Cerda-Caltavuturo-Polizzi-Collesano-Campofelice-Cerda. 5 laps of 67.5 miles = 337.5 miles. Competitors:
26, finishers: 12.
Two 3-litre Diatto took part. Victoria was forced out of the race on the first lap. Diego De Sterlich, driving

a Diatto 25 S, withdrew on the 3rd lap, in eighth place.

2NDVINCICUP(I)2 May 1926

Auto Club Messina. Monti Peloritani race track.
5 laps of 32.5 miles = total 162.5 miles. Competitors: 15. Fastest lap: Salvatore Fasane driving a Diatto
20 S in 41.05,0 at an average speed of 47.46 mph.

3RD SORRENTO-SANT’AGATA (I)9 May 1926

Uphill race organized by Naples Auto Club.
Sorrento-Massalubrense-Sant’Agata, 7.5 miles, climb: 1,200 feet.

Overall result
1st De STERLICH Diego 3-litre Diatto 10.11,0

Tourism category: 3-litre class
2nd De ROSA Giovanni 3-litre Diatto

PERUGINACUP(I)30 May 1926

Organized by Perugia Auto Club.
Piano di Marsciano-Fontivegge Station-San Sisto-Strozzacaponi-Ellera-Olmo-Ferro di Cavallo-Piano di
Marsciano; 10.25 miles.
18 laps of 10.25 miles = total of 184.5 miles. Competitors: 20, finishers 13.

Over 1,500 cc class
4th De STERLICH Diego Diatto 20 S
5th AYMINI Giulio Diatto 20 S

3RD TERNI-PASSO DELLASOMMA (I)13 June 1926

Uphill race organized by Terni Auto Club.
Distance: 2.5 miles, climb: 900 feet.

Overall result
1st De STERLICH Diego Diatto 20 S
Average speed of 53,847 mph.

2ND CUNEO-COLLE DELLAMADDALENA (I)1st August 1926

Uphill race organized by Cuneo Auto Club.
Cuneo-Borgo S. Dalmazzo-Vinadio-Colle della Maddalena; 41.875 miles, climb: 4,700 feet.
Competitors: 44, finishers: 29.

1,100/1,500/2,000/over 2,000 class
1st AYMINI Giulio Diatto 20 S 50.05,8
2nd GIRAUDO Diatto 20 S 51.28,4

3RDACERBOCUP(I)7 August 1926

Organized by Pescara Auto Club. Speed race on the Pescara Aterno race track.
Distance: 15.9 miles. Dedicated to the hero of the First World War Tito Acerbo.
Over 2,000 cc class: Giulio Aymini drove a Diatto (number 8).

LA SPEZIA RACE TRACK (I) 29 August 1926

Organized by La Spezia Auto Moto Club.
10 laps of 5 miles = 50 miles.
Starters: 18, finishers: 4.

Tourism class
2nd NUTI Diatto 20 S 1:15.50,8

10THSUSA-MONCENISIO(I)21 September 1926

Uphill race organized by Turin Auto Club.
Distance: 13.8 miles. Climb: 4,600 feet.

Race class, Tourism
1st AYMINI Giulio Diatto 20 S 20.56,2
Average speed of 39.595 mph; new record in its class.
2nd GIRAUDO Diatto 20 S 21.16,2

Uphill race organized by Bologna Auto Club.
Bologna-Passo Raticosa-Rastignano Loiano.

16.87miles, climb: 2,000 feet.

Tourism class
1st TESTI Antonio 2-litre Diatto 23.49,2
Average speed:42.033 mph.

4THTOLENTINO-COLLEPATERNO(I) 18 October 1926

Uphill race organized by Macerata Auto Club. Race distance: 3.125 miles, climb: 1,000 feet.

Race category, Tourism: 4.5-litre class
1st De STERLICH Diego 4.5-litre Diatto 4.17,0
Average speed of 43.75 mph.

1STMILLEMIGLIA(I)26-27 March 1927

First edition, organized by Brescia Auto Club. Brescia-Montichiari-Casalmaggiore-Parma-Bologna-Pas-
so della Futa-Florence-Siena-Radicofani-Viterbo-Rome-Terni-Perugia-Gubbio-Macerata-Loreto-Ancona-
Rimini-Bologna-Ferrara-Rovigo-Padova-Treviso-Feltre-Vicenza-Verona-Brescia. Total distance: 1,017.5
miles. Sunny practically throughout. Competitors: 77, finishers: 55.
In the 3-litre class: Four 4-cylinder Diatto with 4 overhead valves and two experimental 2-litre 8-cylinder
Diatto. The first team (number 79) with Aymini and Delpodio in a Diatto 35 Type failed to finish.

Overall result
18th SCHIEPPATI Cesare-FERRETTI G. Diatto 35 Type (number 95)
19th GIRAUDO E.-PAGLIERO P. Diatto 26 Type (number 81)
31st SANSONI A.-VIANO L. Diatto 35 Type (number 96)

4TH SORRENTO-SANT’AGATA (I)1st May 1927

Uphill race organized by Naples Auto Club. Sorrento-Massalubrense-Sant’Agata.
8 miles, climb: 1,200 feet.

Race class, Sport

2nd De STERLICH Diego 3-litre Diatto 10.37,6

6-HOUR ESSEX CARCLUB (GB)7 May 1927

Outer Circuit, Brooklands, England. Speed and endurance. Track distance: 2.765 miles.

2-litre class
1st n. a. Diatto 30

Overall result
7th n. a. Diatto 30

3RDTRIESTE-OPICINA(I)19 July 1927

Uphill race organized by Trieste Auto Club.
Trieste-Opicina, total distance: 5.93 miles.
Finishers: 15.

Tourism class, Free
1st FRANCHETTI Ettore Diatto 26 S 7.29,0
Average speed of 50.389 mph.

Speed trial organized by Pisa Auto Club. Parco Reale race track: Cascine Vecchie-viale del Gombo-via
Prini-La Palazzina-viale Cascine nuove. 6 laps of 8.75 miles = 52.5 miles. Finishers: 8.

Tourism class
2nd BETTI Gualtiero 3-litre Diatto 52.38,0

4THACERBOCUP(I)6 August 1927

At the start line: Gaetano Napoleone drove the 1921 3-litre Diatto.

5TH MERLUZZAUPHILL RACE (I)29 January 1928

Organized by Rome Auto Club.
Distance: 1.875 miles.
Competitors: 30, finishers: 21.

Race class, Sport
3rd De BERNARDINIS B. Diatto 26 S 1.30,8

4THTOUR OFSICILY(I)8-9 May 1928

Speed trial. Cerda-Madonie race track-Messina-Siracusa-Agrigento-Marsala-Trapani-Palermo = 649 miles.
Competitors: 18, finishers: 10.

2,000 cc class
1st CARNAZZA F. Diatto 20 S

SICILIAN GOLDCUP(I)27 May 1928

Siracusa Auto Club. 4 laps of 18.75 miles = 75 miles. Finishers: 8.

2,000 cc class

1st SPAMPINATO Diatto 20 S 1:23.31,6
2nd JACONA 2-litre Diatto

Over 2,000 cc class
1st TAMPIERI Diatto
Average speed of: 49.470 mph; time 1:30.45,00.

SILACUP(I)1st July 1928

Organized by: Cosenza Auto Club.
Speed and endurance. Competitors: 22.

Fourth Targa Catalani for the uphill section from Cosenza to Monte Scuro, 17.6 miles x 2 = 35.2 miles; climb: 4,500 feet.
2nd STORINO Domenico Diatto 26 S 1:08.17,0