| Circuit | Type | Date | Winner | |
 |
Indianapolis | Paved Oval |
30 May | J.Parsons (Kurtis-Offenhauser) |
 |
Milwaukee | Dirt Oval |
11 June | T.Bettenhausen (Wetteroth-Offenhauser) |
 |
Langhorne | Dirt Oval |
25 June | J.McGrath (Kurtis-Offenhauser) |
 |
Springfield | Dirt Oval |
19 August | P.Russo (Nichels-Offenhauser) |
|
Milwaukee | Dirt Oval |
27 August | W.Faulkner (Kurtis-Offenhauser) |
 |
Pike's Peak | Hill Climb |
4 September | A.Rogers (Coniff-Offenhauser) |
 |
Syracuse | Dirt Oval |
9 September | J.McGrath (Kurtis-Offenhauser) |
 |
Detroit | Dirt Oval |
10 September | H.Banks (Moore-Offenhauser) |
|
Springfield | Dirt Oval |
1 October | T.Bettenhausen (Kurtis-Offenhauser) |
 |
Sacramento | Dirt Oval |
15 October | D.Dismore (Kurtis-Offenhauser) |
 |
Arizona State Fairgrounds | Dirt Oval |
12 November | J.Davies (Ewing-Offenhauser) |
|
Bay Meadows | Dirt Oval |
26 November | T.Bettenhausen (Kurtis-Offenhauser) |
 |
Darlington | Paved Oval |
10 December | J.Parsons (Nichels-Offenhauser) |