IROC XI was the eleventh year of IROC competition, which took place in 1987. It saw the use of the Chevrolet Camaro in all races, the beginning of a long partnership with ABC/ESPN, 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 $191,900.
The roster of drivers and final points standings were as follows:
| Rank | Driver | Points | Winnings | Series and reason for invite | 
|---|
| 1 | Geoff Bodine | 76 | $191,900 | NASCAR Winston Cup Series 1986 Daytona 500 winner
 | 
| 2 | Al Unser Jr. | 65 | $90,400 | CART PPG IndyCar World Series 1986 & 1987 24 Hours of Daytona GTP winner
 Defending IROC Champion
 | 
| 3 | Bobby Rahal | 51 | $57,800 | CART PPG IndyCar World Series 1986 Indy 500 Winner & 1986 IndyCar Champion
 | 
| 4 | Wally Dallenbach Jr. | 43 | $43,400 | SCCA Trans-Am Series 1986 Trans-Am Series Champion
 | 
| 5 | Darrell Waltrip | 42 | $44,500 | NASCAR Winston Cup 2nd in 1986 Winston Cup points
 | 
| 6 | Bill Elliott | 38 | $34,400 | NASCAR Winston Cup 4th in 1986 Winston Cup points
 1987 24 Hours of Daytona GTO winner
 | 
| 7 | Michael Andretti | 33 | $35,000 | CART PPG IndyCar World Series 2nd in 1986 IndyCar points
 | 
| 8 | Scott Pruett | 32 | $29,000 | IMSA Camel GTO & SCCA Trans-Am Series 1986 Camel GTO Champion
 1986 12 Hours of Sebring GTO winner
 1987 24 Hours of Daytona GTO winner
 | 
| 9 | Mario Andretti | 31 | $28,100 | CART PPG IndyCar World Series 5th in 1986 IndyCar points
 IROC VI champion
 | 
| 10 | Dale Earnhardt | 30 | $30,000 | NASCAR Winston Cup Series 1986 Winston Cup Champion
 | 
| 11 | Al Unser | 27 | $26,000 | CART PPG IndyCar World Series IROC V Champion
 | 
| 12 | Derek Bell | 27 | $25,000 | World Sports-Prototype Championship & IMSA Camel GTP 1986 & 1987 24 Hours of Daytona GTP winner
 1986 24 Hours of Le Mans Winner
 1986 World Sportscar Prototype Champion
 3rd in 1986 Camel GTP points
 |