| Petrila to Ridgeland (Mississippi) | 5,641.04 mi (9,078.37 km) |
| Petrila to Ridgewood (New Jersey) | 4,598.20 mi (7,400.09 km) |
| Petrila to Rifle (Colorado) | 5,832.54 mi (9,386.56 km) |
| Petrila to Rincon (Georgia) | 5,296.77 mi (8,524.33 km) |
| Petrila to Ringwood (New Jersey) | 4,599.00 mi (7,401.37 km) |
| Petrila to Río Grande (Puerto Rico) | 5,286.20 mi (8,507.32 km) |
| Petrila to Rio Grande City (Texas) | 6,292.17 mi (10,126.27 km) |
| Petrila to Rio Linda (California) | 6,227.70 mi (10,022.52 km) |
| Petrila to Rio Rancho (New Mexico) | 6,049.36 mi (9,735.50 km) |
| Petrila to Rio Rico (Arizona) | 6,401.68 mi (10,302.51 km) |
| Petrila to Ripon (California) | 6,280.61 mi (10,107.66 km) |
| Petrila to River Edge (New Jersey) | 4,597.76 mi (7,399.38 km) |
| Petrila to River Falls (Wisconsin) | 5,076.96 mi (8,170.58 km) |
| Petrila to River Forest (Illinois) | 5,067.26 mi (8,154.97 km) |
| Petrila to River Grove (Illinois) | 5,066.43 mi (8,153.63 km) |
