| Mentor to Romeoville (Illinois) | 349.06 mi (561.76 km) |
| Mentor to Romulus (Michigan) | 110.63 mi (178.05 km) |
| Mentor to Ronkonkoma (New York) | 430.79 mi (693.28 km) |
| Mentor to Roosevelt (New York) | 408.97 mi (658.17 km) |
| Mentor to Rosamond (California) | 2,038.59 mi (3,280.79 km) |
| Mentor to Rosaryville (Maryland) | 311.93 mi (502.01 km) |
| Mentor to Roscoe (Illinois) | 396.72 mi (638.46 km) |
| Mentor to Rose Hill (Virginia) | 299.81 mi (482.50 km) |
| Mentor to Roseburg (Oregon) | 2,121.80 mi (3,414.70 km) |
| Mentor to Rosedale (California) | 2,074.95 mi (3,339.31 km) |
| Mentor to Rosedale (Maryland) | 301.54 mi (485.28 km) |
| Mentor to Roselle (Illinois) | 347.97 mi (560.01 km) |
| Mentor to Roselle (New Jersey) | 374.83 mi (603.22 km) |
| Mentor to Roselle Park (New Jersey) | 374.28 mi (602.35 km) |
| Mentor to Rosemead (California) | 2,055.11 mi (3,307.38 km) |
