| Hertford to Rosemont (California) | 5,264.75 mi (8,472.80 km) |
| Hertford to Rosemount (Minnesota) | 4,005.66 mi (6,446.49 km) |
| Hertford to Rosenberg (Texas) | 4,871.76 mi (7,840.34 km) |
| Hertford to Roseville (California) | 5,250.81 mi (8,450.36 km) |
| Hertford to Roseville (Michigan) | 3,731.75 mi (6,005.68 km) |
| Hertford to Roseville (Minnesota) | 3,996.10 mi (6,431.10 km) |
| Hertford to Rossmoor (California) | 5,438.67 mi (8,752.70 km) |
| Hertford to Rossville (Maryland) | 3,617.32 mi (5,821.51 km) |
| Hertford to Roswell (Georgia) | 4,186.61 mi (6,737.70 km) |
| Hertford to Roswell (New Mexico) | 4,998.19 mi (8,043.80 km) |
| Hertford to Round Lake (Illinois) | 3,936.46 mi (6,335.11 km) |
| Hertford to Round Lake Beach (Illinois) | 3,933.86 mi (6,330.94 km) |
| Hertford to Round Rock (Texas) | 4,892.01 mi (7,872.93 km) |
| Hertford to Rowland Heights (California) | 5,422.14 mi (8,726.08 km) |
| Hertford to Rowlett (Texas) | 4,724.38 mi (7,603.16 km) |
