| Series |
Class |
Distance |
Winner |
Second |
Third |
Speed |
|
An Tostal May 1, Curragh, Co. Kildare, Ireland (7.885 km road course)
|
| -- |
500cc |
??? |
Louis Carter (500 Norton) |
??? |
??? |
114.0 |
| -- |
350cc |
??? |
Frank Fox (350 Norton) |
??? |
??? |
101.7 |
| -- |
250cc |
??? |
Ronnie McCutcheon (250 Velocette) |
??? |
??? |
70.4 |
|
Leinster Two 100s May 8, Skerries, Dublin, Ireland (13.357 km road course)
|
| -- |
Handicap |
12 laps |
P.E. Whelan (350 BSA) |
??? |
??? |
??? |
| -- |
500cc |
12 laps |
Reg Armstrong (500 Gilera) |
Frank Fox (500 Norton) |
Louis Carter (500 Norton) |
145.1 |
| -- |
350cc |
12 laps |
Frank Fox (350 Norton) |
Malcolm Templeton (350 AJS) |
J.A. Dickson (350 AJS) |
132.0 |
| -- |
250cc |
12 laps |
Arthur Wheeler (250 Moto-Guzzi) |
Bill Maddrick (250 Moto-Guzzi) |
Bill Webster (250 Velocette) |
124.5 |
|
North West 200 May 15, Triangle Circuit, Coleraine, Northern Ireland (18.024 km road course)
|
| -- |
Handicap |
??? |
V.T. Williams (350 Norton) |
??? |
??? |
??? |
| -- |
500cc |
18 laps |
Reg Armstrong (500 Gilera) |
Bob McIntyre (500 Matchless) |
Louis Carter (500 Norton) |
149.3 |
| -- |
350cc |
17 laps |
Derek Ennett (350 AJS) |
Harry Pearce (350 Velocette) |
Rudy Allison (350 Norton) |
138.7 |
| -- |
250cc |
16 laps |
Arthur Wheeler (250 Moto-Guzzi) |
Bill Maddrick (250 Moto-Guzzi) |
W.N. Ferguson (250 Excelsior) |
127.2 |
|
Cookstown 100 May 19, Orritor Circuit, Cookstown, Co. Tyrone, Northern Ireland (12.231 km road course)
|
| -- |
Handicap |
??? |
Sammy Miller (350 AJS) |
R. Ferguson (350 AJS) |
G.A. Coulter (250 New Imperial) |
119.0 |
| -- |
500cc |
??? |
R. Knox (500 Norton) |
??? |
??? |
117.2 |
| -- |
350cc |
??? |
R. Ferguson (350 AJS) |
??? |
??? |
117.7 |
| -- |
250cc |
??? |
G.A. Coulter (250 New Imperial) |
??? |
??? |
101.5 |
|
Skerries 100 Jul 3, Skerries, Dublin, Ireland (11.587 km road course)
|
| -- |
Handicap |
??? |
V.J. Bracken (350 Triumph) |
Sammy Miller (350 AJS) |
A. Carson (350 BSA) |
91.8 |
| -- |
500cc |
??? |
Louis Carter (500 Norton) |
??? |
??? |
125.8 |
| -- |
350cc |
??? |
Malcolm Templeton (350 AJS) |
??? |
??? |
118.3 |
| -- |
250cc |
??? |
D.G. Andrews (250 Excelsior) |
??? |
??? |
106.4 |
|
Mid-Antrim 150 Jul 14 (16.737 km road course)
|
| -- |
Handicap |
??? |
C. Harkness (350 BSA) |
R. Wylie (250 Excelsior) |
W.H. Spence (350 Norton) |
127.8 |
| -- |
500cc |
??? |
Malcolm Templeton (500 Matchless) |
??? |
??? |
144.3 |
| -- |
350cc |
??? |
W.H. Spence (350 Norton) |
??? |
??? |
140.3 |
| -- |
250cc |
??? |
Ronnie McCutcheon (250 Velocette) |
??? |
??? |
119.1 |
|
Munster 100 Jul 17 (9.817 km road course)
|
| -- |
Handicap |
16 laps |
P.E. Whelan (350 BSA) |
??? |
??? |
??? |
| Ireland |
500cc |
16 laps |
Louis Carter (500 Norton) |
M.P. Roche (500 Norton) |
T.H. Turner (500 Norton) |
139.8 |
| Ireland |
350cc |
16 laps |
Frank Fox (350 Norton) |
R. Ferguson (350 AJS) |
A. Lyons (350 BSA) |
133.2 |
|
Temple 100 Jul 31 (8.851 km road course)
|
| -- |
Handicap |
??? |
W. Martin (250 Triumph) |
J.A. Dickson (350 AJS) |
W.R. Mann (500 BSA) |
103.1 |
| -- |
500cc |
??? |
Malcolm Templeton (500 Matchless) |
??? |
??? |
117.7 |
| -- |
350cc |
??? |
T.H. Turner (350 Norton) |
??? |
??? |
112.6 |
| -- |
250cc |
??? |
Ronnie McCutcheon (250 Velocette) |
??? |
??? |
105.9 |
|
Carrowdore 100 Sep 18 (16.898 km road course)
|
| -- |
Handicap |
??? |
W. Gibson (350 BSA) |
??? |
??? |
??? |
| -- |
500cc |
??? |
Malcolm Templeton (500 Matchless) |
??? |
??? |
133.4 |
| -- |
350cc |
??? |
R. Ferguson (350 AJS) |
??? |
??? |
130.8 |
| -- |
250cc |
??? |
W.H. Ferguson (250 Excelsior) |
??? |
??? |
116.0 |
|
Phoenix Park Sep 25, Phoenix Park, Dublin, Ireland (2.735 km street course)
|
| -- |
Handicap |
|
H.A. O'Reilly (350 Norton) |
??? |
??? |
??? |
| -- |
500cc |
|
Louis Carter (500 Norton) |
??? |
??? |
115.8 |
| -- |
350cc |
|
T.H. Turner (350 Norton) |
??? |
??? |
105.3 |
| -- |
250cc |
|
C.D. Little (250 Excelsior) |
??? |
??? |
88.2 |