The eleventh year of IROC competition took place in 1987. IROC XI saw the use of the Chevrolet Camaro in all races, and continued the format introduced in IROC VIII. Race one took place on the Daytona International Speedway, race two took place at Mid-Ohio, race three ran at Michigan International Speedway, and race four concluded the year at Watkins Glen International. Geoff Bodine won the championship, and took home $191,900 for his efforts.
The roster of drivers and final points standings were as follows:
| Position | Driver | Points | Winnings | Series |
|---|---|---|---|---|
| 1 | Geoff Bodine | 76 | $191,900 | NASCAR Winston Cup |
| 2 | Al Unser, Jr. | 65 | $90,400 | CART |
| 3 | Bobby Rahal | 51 | $57,800 | CART |
| 4 | Wally Dallenbach, Jr. | 43 | $43,400 | SCCA Trans-Am Series |
| 5 | Darrell Waltrip | 42 | $44,500 | NASCAR Winston Cup |
| 6 | Bill Elliott | 38 | $34,400 | NASCAR Winston Cup |
| 7 | Michael Andretti | 33 | $35,000 | CART |
| 8 | Scott Pruett | 32 | $29,000 | IMSA |
| 9 | Mario Andretti | 31 | $28,100 | CART |
| 10 | Dale Earnhardt | 30 | $30,000 | NASCAR Winston Cup |
| 11 | Al Unser | 27 | $26,000 | CART |
| 12 | Derek Bell | 27 | $25,000 | World Sports-Prototype Championship |