| Mentor to Rockville (Maryland) | 284.25 mi (457.45 km) |
| Mentor to Rockville Centre (New York) | 406.40 mi (654.04 km) |
| Mentor to Rockwall (Texas) | 1,025.20 mi (1,649.90 km) |
| Mentor to Rocky Mount (North Carolina) | 438.51 mi (705.71 km) |
| Mentor to Rocky Point (New York) | 438.85 mi (706.26 km) |
| Mentor to Rocky River (Ohio) | 30.68 mi (49.37 km) |
| Mentor to Roessleville (New York) | 392.05 mi (630.95 km) |
| Mentor to Rogers (Arkansas) | 780.74 mi (1,256.48 km) |
| Mentor to Rogers (Minnesota) | 659.17 mi (1,060.83 km) |
| Mentor to Rohnert Park (California) | 2,179.62 mi (3,507.76 km) |
| Mentor to Rolla (Missouri) | 610.14 mi (981.93 km) |
| Mentor to Rolling Meadows (Illinois) | 345.03 mi (555.27 km) |
| Mentor to Roma (Texas) | 1,455.92 mi (2,343.08 km) |
| Mentor to Rome (Georgia) | 553.93 mi (891.47 km) |
| Mentor to Rome (New York) | 316.23 mi (508.93 km) |
