The events was run with 4 legs at the following venue:
TOURIST TROPHY
Isle of Man (Mountain) / June 23, 1950
Top Six Finishers
1. D. Ambrosini (ITA) Benelli
2. M. Cann (GB) Moto Guzzi
3. R. Mead (GB) Velocette
4. R. Pike (GB) Rudge
5. L.J. Bayliss (GB) LB
6. A.W. Jones (GB) Moto Guzzi
SWITZERLAND
Geneva / July 23, 1950
Top Six Finishers
1. D. Ambrosini (ITA) Benelli
2. B. Ruffo (ITA) Moto Guzzi
3. D. Dale (GB) Benelli
4. B. Musy (SW) Moto Guzzi
5. C. Bellotti (SW) Moto Guzzi
6. O. Francone (ITA) Moto Guzzi
ULSTER
Belfast / Clady / August 8, 1950
Top Six Finishers
1. M. Cann (GB) Moto Guzzi
2. D. Ambrosini (ITA) Benelli
3. W. Biilington (IRL) Moto Guzzi
4. A. Burton (GB) Excelsior
5. G. Andrew (GB) Excelsior
6. W. Campbell (GB) Excelsior
NATIONS
Monza / September 10, 1950
Top Six Finishers
1. D. Ambrosini (ITA) Benelli
2. F. Anderson (GB) Moto Guzzi
3. B. Francisco (ITA) Benelli
4. C. Mastellari (ITA) Moto Guzzi
5. A. Montanari (ITA) Moto Guzzi
6. U. Oiebani (ITA) Moto Guzzi
1950 RIDERS' 250CC WORLD CHAMPIONSHIP
- D. Ambrosini (ITA) Benelli
- M. Cann (GB) Moto Guzzi
- F. Anderson (GB) Moto Guzzi
- B. Ruffo (ITA) Moto Guzzi
- W. Billington (IRL) Moto Guzzi
- 6. D. Dale (GB) Benelli
- B. Francisco (ITA) Benelli
- R. Mead (GB) Velocette
- A. Burton (GB) Excelsior
- B. Musy (SW) Moto Guzzi