| series | Champcar complete |
| race | Trenton |
| year | 1978 |
| team | car | entry | driver | start | finish | chassis | engine | laps led | * | |
| Patrick | 20 | North American Van Lines | Gordon Johncock | | 4 | 1 | Wildcat Mk.II [4] | DGS | 79 | |
| AJ Foyt | 14 | Gilmore/1st National | AJ Foyt | | 5 | 2 | Coyote IV [73-1] | Foyt V8 tc | ||
| Penske | 1 | Norton Spirit | Tom Sneva | | 1 | 3 | Penske PC-6/78 | Cosworth DFX | 14 | |
| Interscope | 25 | Interscope | Danny Ongais | | 2 | 4 | Parnelli VPJ6C | Cosworth DFX | 30 | |
| Patrick | 40 | Goodyear | Steve Krisiloff | | 9 | 5 | Wildcat Mk.II [3] | DGS | ||
| Morales | 78 | Alex Foods | Bobby Olivero | | 17 | 6 | Lightning Mk1/77 | Offy Drake tc | ||
| McElreath | 26 | McElreath Racing | Jim McElreath | | 18 | 7 | Eagle 73 [7306] | Offy 159 tc | ||
| AMI Racing | 43 | Armstrong Mould | Tom Bigelow | | 8 | 8 | Wildcat Mk.II [2] | DGS | ||
| Patrick Santello | 65 | S&M Electric | Larry Rice | | 15 | 9 | Eagle 74 [7405] | Offy Drake tc | ||
| McLaren | 4 | 1st National Travel Check | Johnny Rutherford | | 11 | 10 | McLaren M24 | Cosworth DFX | ||
| O'Connell | 6 | Sugaripe Prune | Wally Dallenbach | | 12 | 11 | McLaren M24 [001] | Cosworth DFX | 3 | |
| Leader Card | 22 | Kent Oil | Tom Bagley | | 21 | 12 | Eagle 74 [7403] | Offy Drake tc | ||
| Penske | 7 | Gould Charge | Mario Andretti | | 3 | 13 | Penske PC-6/78 | Cosworth DFX | ||
| Leader Card | 24 | Thermo King | Sheldon Kinser | | 14 | 14 | Watson 77 [1] | Offy Drake tc | ||
| Dayton-Walther | 77 | Dayton-Walther | Salt Walther | | 13 | 15 | McLaren M16C/D [C-5] | DGS | ||
| Fletcher | 8 | Budweiser | Vern Schuppan | | 19 | 16 | Lightning Mk1/77 [a] | Cosworth DFX | 8 | |
| Lindsey Hopkins | 16 | 1st National Travel Check | Johnny Parsons Jr | | 7 | 17 | Lightning Mk1/77 [c] | Offy Drake tc | ||
| Gehlhausen | 19 | Hubler Chevrolet | Spike Gehlhausen | | 6 | 18 | Eagle 74 Fletcher | Offy Drake tc | ||
| Grant King Racers | 98 | Oberdorfer | Gary Bettenhausen | | 16 | 19 | Kingfish 73 | Offy 159 tc | ||
| All American Racers | 48 | ARCOgraphite | Bobby Unser | | 10 | 20 | Lightning Mk1/77 [ROMLIN/7] | Cosworth DFX | ||
| Patrick | 60 | North American Van Lines | Roger McCluskey | | 22 | 21 | Wildcat Mk.IV [1] | Offy DT160 V8 | ||
| Frank Fiore | 87 | Machinists Union | Jerry Karl | | 20 | 22 | Rascar Atlanta 72 [2] | Offy Drake tc | ||
| Patrick | 20 | North American Van Lines | Gordon Johncock | | DNS | Wildcat Mk.IV [1] | Offy DT160 V8 |
