| Mentor to Ridgeland (Mississippi) | 802.73 mi (1,291.86 km) |
| Mentor to Ridgewood (New Jersey) | 377.80 mi (608.02 km) |
| Mentor to Rifle (Colorado) | 1,389.08 mi (2,235.50 km) |
| Mentor to Rincon (Georgia) | 649.13 mi (1,044.67 km) |
| Mentor to Ringwood (New Jersey) | 368.09 mi (592.38 km) |
| Mentor to Río Grande (Puerto Rico) | 1,851.50 mi (2,979.70 km) |
| Mentor to Rio Grande City (Texas) | 1,450.67 mi (2,334.63 km) |
| Mentor to Rio Linda (California) | 2,107.85 mi (3,392.25 km) |
| Mentor to Rio Rancho (New Mexico) | 1,435.03 mi (2,309.46 km) |
| Mentor to Rio Rico (Arizona) | 1,777.96 mi (2,861.35 km) |
| Mentor to Ripon (California) | 2,113.59 mi (3,401.49 km) |
| Mentor to River Edge (New Jersey) | 382.27 mi (615.21 km) |
| Mentor to River Falls (Wisconsin) | 608.03 mi (978.53 km) |
| Mentor to River Forest (Illinois) | 334.20 mi (537.84 km) |
| Mentor to River Grove (Illinois) | 335.16 mi (539.39 km) |
