International 500 Mile
Sweepstakes
Indianapolis Motor Speedway
2.5 Mile Paved Oval
200 Laps/500 Miles
May 30, 1966
| Finish | Start | Driver | Car # | Sponsor/Name | Chassis | Engine | Laps | Status |
Points |
| 1 | 15 | Graham Hill | 24 | American Red Ball | Lola | Ford | 200 | 3:27:52.53 144.317 | 1,000 |
| 2 | 2 | Jim Clark | 19 | STP Gas Treatment | Lotus | Ford | 200 | 3:28:33.66 143.843 | 800 |
| 3 | 7 | Jim McElreath | 3 | Zink-Urschel-Slick | Brabham | Ford | 200 | 3:28:42.42 143.742 | 700 |
| 4 | 6 | Gordon Johncock | 72 | Weinberger Homes | Gerhardt | Ford | 200 | 3:29:40.00 143.084 | 600 |
| 5 | 17 | Mel Kenyon | 94 | Gerhardt | Gerhardt | Offy | 198 | Flagged | 500 |
| 6 | 11 | Jackie Stewart | 43 | Bowes Seal Fast | Lola | Ford | 190 | Lost oil pressure | 400 |
| 7 | 29 | Eddie Johnson | 54 | Valvoline | Huffaker | Offy | 175 | Stalled | 300 |
| 8 | 28 | Bobby Unser | 11 | Vita Fresh Orange Juice | Huffaker | Offy SC | 171 | Flagged | 250 |
| 9 | 20 | Joe Leonard | 6 | Yamaha | Eagle | Ford | 170 | Engine trouble | 200 |
| 10 | 10 | Jerry Grant | 88 | Bardahl-Pacesetter Homes | Eagle | Ford | 167 | Flagged | 150 |
| 11 | 5 | Lloyd Ruby | 14 | Bardahl Eagle | Eagle | Ford | 166 | Broken cam stud | 100 |
| 12 | 23 | Al Unser | 18 | STP Oil Treatment | Lotus | Ford | 161 | Wrecked NW | 50 |
| 13 | 21 | Roger McCluskey | 8 | G. C. Murphy | Eagle | Ford | 129 | Broken oil line | |
| 14 | 4 | Parnelli Jones | 98 | Agajanian REV 500 | Shrike | Offy SC | 87 | Wheel bearing | |
| 15 | 13 | Rodger Ward | 26 | Bryant Heating & Cooling | Lola | Offy SC | 74 | Poor handling | |
| 16 | 25 | Carl Williams | 77 | Dayton Steel Wheel | Gerhardt | Ford | 38 | Broken oil line | |
| 17 | 22 | Jim Hurtubise | 56 | Gerhardt | Gerhardt | Offy TC | 29 | Broken oil line | |
| 18 | 1 | Mario Andretti | 1 | Dean Van Lines | Brawner | Ford | 27 | Broken valve | |
| 19 | 3 | George Snider | 82 | Sheraton-Thompson | Lotus | Ford | 22 | Wrecked turn 1 | |
| 20 | 8 | Chuck Hulse | 12 | Wynn's | Watson | Ford | 22 | Wrecked turn 1 | |
| 21 | 27 | Bud Tingelstad | 22 | Federal Engineering | Gerhardt | Offy SC | 16 | Radiator | |
| 22 | 14 | Johnny Boyd | 28 | Prestone | BRP | Ford | 5 | Wrecked turn 1 | |
| 23 | 9 | Don Branson | 4 | Leader Card | Gerhardt | Ford | 0 | Wrecked MS | |
| 24 | 12 | Billy Foster | 27 | Jim Robbins | Vollstedt | Ford | 0 | Wrecked MS | |
| 25 | 16 | Gary Congdon | 53 | Valvoline | Huffaker | Offy | 0 | Wrecked MS | |
| 26 | 18 | A. J. Foyt | 2 | Sheraton-Thompson | Lotus | Ford | 0 | Wrecked MS | |
| 27 | 19 | Dan Gurney | 31 | All American Racers | Eagle | Ford | 0 | Wrecked MS | |
| 28 | 24 | Cale Yarborough | 66 | Jim Robbins | Vollstedt | Ford | 0 | Wrecked MS | |
| 29 | 26 | Arnie Knepper | 37 | Sam Liosi | Cecil | Ford | 0 | Wrecked MS | |
| 30 | 30 | Al Miller (Krulac) | 75 | Jerry Alderman Ford | Lotus | Ford | 0 | Wrecked MS | |
| 31 | 31 | Bobby Grim | 39 | Racing Associates | Watson FE | Offy TC | 0 | Wrecked MS | |
| 32 | 32 | Larry Dickson | 34 | Michner Petroleum | Lola | Ford | 0 | Wrecked MS | |
| 33 | 33 | Ronnie Duman | 96 | Harrison | Eisert | Ford | 0 | Wrecked MS | |
| -- | -- | Bill Cheesbourg | 99 | Jack Adams | Epperly FE | Turbine | -- | Did not qualify | |
| -- | -- | Bill Cheesbourg | 79 | “Twin Engine” | Huffaker | 2 Porsche | -- | Did not qualify | |
| -- | -- | Dick Atkins | 97 | Agajanian REV 500 | Shrike | Offy SC | -- | Did not qualify | |
| -- | -- | Ronnie Bucknum | 68 | Western Racing Associates | Lola | Chevy | -- | Did not qualify | |
| -- | -- | Ronnie Duman | 17 | Jim Robbins | Vollstedt | Ford | -- | Did not qualify | |
| -- | -- | A. J. Foyt | 2 | Sheraton-Thompson | Coyote | Ford | -- | Wrecked practice | |
| -- | -- | Masten Gregory | 63 | MG Liquid Suspension | Huffaker | Chevy | -- | Did not qualify | |
| -- | -- | Masten Gregory | 78 | G. C. Murphy | Gerhardt | Ford | -- | Did not qualify | |
| -- | -- | Bob Harkey | 85 | Caves Buick | Gerhardt | Offy | -- | Did not qualify | |
| -- | -- | Bob Hurt | 36 | Viking Racing | Gerhardt | Offy | -- | Did not qualify | |
| -- | -- | Bobby Johns | 41 | Prestone | BRP | Ford | -- | Did not qualify | |
| -- | -- | Bruce Jacobi | 68 | Western Racing Associates | Lola | Chevy | -- | Did not qualify | |
| -- | -- | Art Malone | 32 | Wally Weir | Halibrand | Offy | -- | Wrecked practice | |
| -- | -- | Bob Mathouser | 96 | Harrison | Eisert | Ford | -- | Did not qualify | |
| -- | -- | Mike McGreevy | 85 | Caves Buick | Gerhardt | Offy | -- | Did not qualify | |
| -- | -- | Lee Roy Yarbrough | 76 | Pure Firebird | Gerhardt | Offy | -- | Wrecked practice | |
| -- | -- | Bob Veith | 67 | MG Liquid Suspension | Huffaker | Offy SC | -- | Did not qualify | |
| -- | -- | Art Pollard | 44 | Heger & Compton | Vollstedt | Offy | -- | DNS, too slow | |
| -- | -- | Bob Wente | 65 | Travelon Trailer | Gerhardt | Offy | -- | Did not qualify | |
| -- | -- | Bob Wente | 85 | Caves Buick | Gerhardt | Offy SC | -- | Did not qualify | |
| -- | -- | Dempsey Wilson | 51 | Prather | Halibrand | Offy | -- | Did not qualify | |
| -- | -- | Greg Weld | 15 | STP Oil Treatment | Granatelli FE4W | Novi SC | -- | Wrecked qualifying | |
| -- | -- | Greg Weld | 76 | Pure Firebird | Gerhardt | Offy | -- | Wrecked qualifying | |
| -- | -- | Chuck Rodee | 92 | Leader Card | Watson | Offy | -- | Wrecked qualifying - fatal | |
| -- | -- | Red Riegel | 87 | California Speed Shop | Halibrand | Offy | -- | Wrecked practice | |
| -- | -- | Chuck Stevenson | 11 | Vita Fresh Orange Juice | Huffaker | Offy TC | -- | Did not qualify | |
| -- | -- | Sam Sessions | 38 | Federal Engineering | Ward | Offy | -- | Did not qualify | |
| -- | -- | Bob Tattersall | 61 | McManus Bros. | Halibrand | Offy | -- | Did not qualify | |
| -- | -- | Dave Paul | 23 | Paul Enterprise | Halibrand | Offy | -- | Did not qualify | |
| -- | -- | Ron Lux | 55 | Barnett Brothers | Kuzma FE | Offy | -- | Did not qualify | |
| -- | -- | Jud Larson | 9 | Michener Petroleum | Lola | Offy | -- | Did not appear | |
| -- | -- | Gig Stephens | 71 | Fairchild-Hiller | Halibrand | Offy | -- | Did not appear | |
| -- | -- | Johnny Rutherford | 92 | Leader Card | Watson | Ford | -- | Injured, could not participate | |
| -- | -- | Al Unser | 96 | Harrison | Eisert | Ford | -- | Drove #18 instead | |
| -- | -- | Hal Minyard | 44 | Compton Motors | Vollstedt | Offy | -- | Did not qualify | |
| -- | -- | Hal Minyard | 49 | Ring Free-Ansen | Troutman-Barnes | Offy | -- | Did not qualify | |
| -- | -- | Gary Bettenhausen | 61 | McManus Bros. | Halibrand | Offy | -- | Entry declined, not enough experience | |
| -- | -- | Jack Conely | 89 | Conely-McManus | Edmunds | Offy | -- | Did not appear | |
| -- | -- | Ebb Rose | X | Racing Associates | X | X | -- | Did not appear | |
| -- | -- | Jim Adams | X | X | X | X | -- | Entry declined, not enough experience | |
| -- | -- | Dick Fries | X | X | X | X | -- | Entry declined, not enough experience | |
| -- | -- | Dick Guldstrand | X | X | X | X | -- | Entry declined, not enough experience | |
| -- | -- | Billy Wilkerson | X | X | X | X | -- | Entry declined, not enough experience | |
| -- | -- | Art Malone | 89 | Conely-McManus | Edmunds | Offy | -- | Did not qualify | |
| -- | -- | Billy Foster | 17 | Jim Robbins | Vollstedt | Ford | -- | Did not qualify | |
| -- | -- | Bob Harkey | 48 | Prather | Halibrand | Offy | -- | Did not qualify | |
| -- | -- | Bob Harkey | 81 | Central Excavating | Gerhardt | Offy | -- | Did not qualify | |
| -- | -- | Bob Mathouser | 17 | Jim Robbins | Vollstedt | Ford | -- | Did not qualify | |
| -- | -- | Bob Veith | 63 | MG Liquid Suspension | Huffaker | Chevy | -- | Did not qualify | |
| -- | -- | Bobby Unser | 7 | Vita Fresh Orange Juice | Huffaker | Offy SC | -- | Did not qualify | |
| -- | -- | Chuck Hulse | 86 | Leader Card | Watson | Ford | -- | Did not qualify | |
| -- | -- | Chuck Stevenson | 7 | Vita Fresh Orange Juice | Huffaker | Offy TC | -- | Did not qualify | |
| -- | -- | Dempsey Wilson | 49 | Ring Free-Ansen | Troutman-Barnes | Offy | -- | Did not qualify | |
| -- | -- | Don Branson | 91 | Leader Card | Gerhardt | Ford | -- | Did not qualify | |
| -- | -- | Gordon Johncock | 5 | Weinberger Homes | Eagle | Ford | --- | Did not qualify | |
| -- | -- | Jim McElreath | 52 | Zink-Urschel-Slick | Brabham | Offy SC | -- | Did not qualify | |
| -- | -- | Mario Andretti | 64 | Dean Van Lines | Lotus | Ford | -- | Did not qualify | |
| -- | -- | Mike McGreevy | 65 | Travelon Trailer | Gerhardt | Offy | -- | Did not qualify | |
| -- | -- | Ralph Liguori | 35 | Flynn | Watson | Ford | -- | Did not qualify | |
| -- | -- | Ronnie Bucknum | 69 | Arciero | Eisert | Chevy | -- | Did not qualify | |
| -- | -- | Ronnie Duman | 66 | Jim Robbins | Vollstedt | Ford | -- | Did not qualify | |
| -- | -- | Ronnie Duman | 93 | Harrison | Eisert | Chevy | -- | Did not qualify |
| Lap Leaders | Total | Laps |
| Lloyd Ruby | 68 | 65-75, 87-132, 140-150 |
| Jim Clark | 66 | 17-64, 76-86, 133-139 |
| Jackie Stewart | 40 | 151-190 |
| Mario Andretti | 16 | 1-16 |
| Graham Hill | 10 | 191-200 |