Rex Mays 300
Riverside International Raceway
2.6 Mile Road Course
116 Laps/301.6 Miles
December 1, 1968
| Finish | Start | Driver | Car # | Sponsor/Name | Chassis | Engine | Laps | Status |
Points |
| 1 | 1 | Dan Gurney | 48 | Olsonite | Eagle | Gurney-Weslake Ford | 116 | 2:42:01.27 111.689 | 600 |
| 2 | 9 | Bobby Unser | 3 | Rislone | Eagle | Ford | 115 | Flagged | 480 |
| 3 | 14 | Lloyd Ruby | 25 | Gene White | Mongoose | Ford | 113 | Flagged | 255 |
| 4 | 18 | Skip Scott | 24 | Retzloff Chemical | Lola | Ford | 112 | Flagged | |
| 5 | 26 | Rick Muther | 54 | Valvoline | Finley | Ford | 107 | Flagged | 300 |
| 6 | 17 | Johnny Rutherford | 22 | Michner Petroleum | Eagle | Ford | 103 | Flagged | 240 |
| 7 | 25 | Billy Vukovich, Jr. | 98 | Wagner Lockheed Brake Fluid | Mongoose | Ford | 101 | Flagged | 180 |
| 8 | 19 | George Follmer | 41 | Follmer | Cheetah | Ford | 97 | Flagged | 150 |
| 9 | 15 | John Cannon | 9 | Vel's Parnelli Jones Ford | Mongoose | Ford | 96 | Flagged | 120 |
| 10 | 16 | Peter Revson | 96 | E. R. E. Enterprises | Eisert | Chevy | 81 | Broken gearbox | 90 |
| 11 | 12 | Gordon Johncock | 4 | Gilmore Broadcasting | Eagle | Ford | 79 | Broken rear end | 60 |
| 12 | 23 | Roger McCluskey | 8 | G. C. Murphy | Eagle | Ford | 74 | Engine | 30 |
| 13 | 13 | Ronnie Bucknum | 45 | Weinberger Homes | Eagle | Ford | 73 | Oil seal | |
| 14 | 21 | Mike Mosley | 90 | Zecol-Lubaid | Watson | Ford | 69 | Engine | |
| 15 | 28 | Arnie Knepper | 19 | M.V.S. | Cecil | Ford | 68 | Engine | |
| 16 | 10 | Art Pollard | 20 | STP Oil Treatment | Lotus 4WD | Pratt & Whitney Turbine | 63 | Wrecked | |
| 17 | 3 | Joe Leonard | 60 | Parnelli Jones-STP | Lotus 4WD | Pratt & Whitney Turbine | 62 | Wrecked (Ma. Andretti) | |
| 18 | 2 | Mario Andretti | 2 | Overseas National Airways | Brawner | Ford | 59 | Engine | |
| 19 | 22 | Gary Bettenhausen | 11 | Thermo King Auto Air Conditioning | Gerhardt | Ford | 51 | Lost oil pressure | |
| 20 | 8 | A. J. Foyt | 1 | Sheraton-Thompson | Coyote | Ford | 48 | Broken rear end | |
| 21 | 5 | Mark Donohue | 12 | Sunoco | Eagle | Chevy | 35 | Broken RF suspension | |
| 22 | 7 | Jerry Titus | 64 | Overseas National Airways | Brawner | Ford | 27 | Broken RR suspension | |
| 23 | 6 | Jack Brabham | 35 | Repco-Brabham | Brabham | Repco | 27 | Oil leak | |
| 24 | 24 | Jim Malloy | 67 | Jim Robbins Seat Belt | Vollstedt | Ford | 26 | Broken shift link | |
| 25 | 27 | Sam Sessions | 14 | Quaker State | Gerhardt | Offy TC | 14 | Oil leak | |
| 26 | 4 | Al Unser | 5 | Retzloff Chemical | Lola | Ford | 13 | Wrecked | |
| 27 | 30 | Bill Simpson | 28 | Simpson Safety Equipment | Cheetah | Ford | 5 | Oil seal | |
| 28 | 29 | Jim McElreath | 38 | Jack Adams Aircraft/Wynn's | Brawner | Ford | 4 | Broken front suspension | |
| 29 | 20 | Wally Dallenbach | 21 | Bryant Heating & Cooling | Vollstedt | Ford | 2 | Engine | |
| 30 | 11 | Lou Sell | 39 | Wynn's/Smothers Brothers | Eagle | Ford | 1 | Wrecked | |
| -- | -- | Mario Andretti | 60 | Parnelli Jones-STP | Lotus 4WD | Pratt & Whitney Turbine | 1 | Relieved Leonard 62 | |
| -- | -- | Mario Andretti | 25 | Gene White | Mongoose | Ford | 44 | Relieved Ruby 70-113 | 165 |
| -- | -- | Al Unser | 24 | Retzloff Chemical | Lola | Ford | 98 | Relieved S. Scott 15-112 | 313 |
| -- | -- | Don Brown | 86 | Zecol-Lubaid | Watson | Offy TC | -- | DNS, too slow | |
| -- | -- | Earl Dykes | 101 | Earl Smith | Gerhardt | Offy | -- | Did not qualify | |
| -- | -- | Ludwig Heimrath | 93 | Eisert | Eisert | Chevy | -- | DNS, too slow | |
| -- | -- | Bud Morley | 69 | Arciero | X | Chevy | -- | DNS, too slow | |
| -- | -- | Hamilton Vose | 88 | Le Chevel Noir | McKee | Chevy | -- | DNS, too slow | |
| -- | -- | Dempsey Wilson | 51 | Lyle Greenman | Halibrand | Chevy | -- | DNS, too slow | |
| -- | -- | Roger West | 99 | Joe Hunt Magneto | Lesovsky D | Offy | -- | DNS, too slow | |
| -- | -- | Keith Rachwitz | 55 | Lynch | Halibrand | Offy | -- | DNS, too slow | |
| -- | -- | Don Schisler | 71 | Horton | Marathon | Ford | -- | DNS, too slow | |
| -- | -- | Les Scott | 50 | Navarro Injection | Watson | Rambler TC | -- | DNS, too slow | |
| -- | -- | Dusty Smith | 101 | Earl Smith | Gerhardt | Offy | -- | Driven by Dykes | |
| -- | -- | Mel Kenyon | 15 | City of Lebanon, Indiana | Gerhardt | Offy TC | -- | Did not appear | |
| -- | -- | George Snider | 16 | Thermo King Auto Air Conditioning | Gerhardt | Offy TC | -- | Did not appear | |
| -- | -- | Otto Becker | 107 | Becker | Eisert | Chevy | -- | Did not appear | |
| -- | -- | Stew McMillan | 121 | X | Eisert | Chevy | -- | Did not appear |
| Lap Leaders | Total | Laps |
| Dan Gurney | 112 | 1-4, 9-116 |
| Mario Andretti | 4 | 5-8 |