| Detroit to Racale | 4,916.32 mi (7,912.05 km) |
| Detroit to Racconigi | 4,292.55 mi (6,908.18 km) |
| Detroit to Raffadali | 4,838.05 mi (7,786.09 km) |
| Detroit to Ragusa | 4,910.12 mi (7,902.07 km) |
| Detroit to Ramacca | 4,888.77 mi (7,867.72 km) |
| Detroit to Randazzo | 4,877.56 mi (7,849.67 km) |
| Detroit to Rapallo | 4,371.97 mi (7,036.01 km) |
| Detroit to Ravanusa | 4,862.64 mi (7,825.66 km) |
| Detroit to Ravenna | 4,489.41 mi (7,225.00 km) |
| Detroit to Recanati | 4,585.05 mi (7,378.92 km) |
| Detroit to Recco | 4,367.92 mi (7,029.49 km) |
| Detroit to Reggello | 4,492.01 mi (7,229.19 km) |
| Detroit to Reggio di Calabria | 4,896.95 mi (7,880.88 km) |
| Detroit to Reggio Emilia | 4,415.05 mi (7,105.33 km) |
| Detroit to Reggiolo | 4,413.87 mi (7,103.44 km) |
