| Mentor to Robertsville (New Jersey) | 378.68 mi (609.43 km) |
| Mentor to Robinson (Texas) | 1,122.71 mi (1,806.83 km) |
| Mentor to Robstown (Texas) | 1,330.20 mi (2,140.75 km) |
| Mentor to Rochester (Michigan) | 114.39 mi (184.09 km) |
| Mentor to Rochester (Minnesota) | 586.27 mi (943.52 km) |
| Mentor to Rochester (New Hampshire) | 538.88 mi (867.25 km) |
| Mentor to Rochester (New York) | 215.45 mi (346.73 km) |
| Mentor to Rochester Hills (Michigan) | 115.00 mi (185.07 km) |
| Mentor to Rock Hill (South Carolina) | 466.53 mi (750.81 km) |
| Mentor to Rock Island (Illinois) | 477.91 mi (769.12 km) |
| Mentor to Rock Springs (Wyoming) | 1,433.47 mi (2,306.95 km) |
| Mentor to Rockford (Illinois) | 398.76 mi (641.75 km) |
| Mentor to Rockledge (Florida) | 924.33 mi (1,487.56 km) |
| Mentor to Rocklin (California) | 2,095.36 mi (3,372.16 km) |
| Mentor to Rockport (Texas) | 1,294.54 mi (2,083.36 km) |
