A team of three cars were entered in the 1951 24 Hours of Le Mans.

Unable to secure a supply of the Cadillac engine that had been used in the C1, Cunningham substituted a version of the Chrysler FirePower Hemi V8 in the C-2R.

[1][2] All three cars were entered, driven by teams John Fitch and Phil Walters, George Rand and Fred Wacker Jr., and Briggs Cunningham and George Huntoon.

Two of the three cars ended up retiring on lap 76 and 98 (9 and 11 hours), respectively, after an accident.

Although the third car, with drivers John Fitch and Phil Walters, managed to complete 223 laps, they were not classified.