Montamarathon Trophy Race
Pacific Coast Speedway
2 Mile Board Oval
125 Laps/250 Miles
July 4, 1915
| Finish | Start | Driver | Car # | Sponsor/Name | Chassis | Engine | Laps | Status |
Points |
| 1 | X | Glover Ruckstell | 11 | Mercer | Mercer | Mercer | 125 | 2:57:03.0 84.722 | 500* |
| 2 | X | Earl Cooper | 8 | Stutz | Stutz | Stutz | 125 | 2:58:05.0 84.230 | 260* |
| 3 | X | Eddie Pullen | 4 | Mercer | Mercer | Mercer | 125 | 2:58:55.0 83.838 | 140* |
| 4 | X | Bob Burman | 9 | Burman | Peugeot | Peugeot | 125 | 3:08:44.4 79.474 | 80* |
| 5 | X | Barney Oldfield | 1 | Peugeot | Peugeot | Peugeot | 125 | 3:17:58.4 75.768 | 50* |
| 6 | X | Frank Elliott | 5 | Gordon | Mercer | Mercer | 117 | Engine | |
| 7 | X | George Hill | 2 | Stutz | Stutz | Stutz | 91 | Radiator | |
| 8 | X | Dave Lewis | 7 | Stutz | Stutz | Stutz | 78 | Burned bearing | |
| 9 | X | William Carlson | 17 | Maxwell | Maxwell | Maxwell | 56 | Wrecked - fatal | |
| 10 | X | Rea Lentz | 24 | Romano | Romano | Curtis | 43 | Burned bearing | |
| 11 | X | Jim Parsons | 22 | Parsons | Stutz | Stutz | 33 | Broken camshaft | |
| 12 | X | Harry Reynolds | 25 | Marmon | Marmon | Marmon | 30 | Engine | |
| 13 | X | Ernest Schneider | 20 | Schneider | X | X | 7 | Broken piston | |
| -- | -- | Cliff MacBeth | 15 | Romano | X | X | -- | Did not start | |
| -- | -- | H. D. Stratton | 21 | Mercer | Mercer | Mercer | -- | Did not start |
Known riding mechanics in this race:
| Finish | Start | Driver | Mechanic | Car # | Sponsor/Name | Chassis | Engine | Laps | Status |
| 9 | X | William Carlson | Paul Franzen | 17 | Maxwell | Maxwell | Maxwell | 56 | Wrecked - fatal |