| Hertford to Romeoville (Illinois) | 3,969.55 mi (6,388.38 km) |
| Hertford to Romulus (Michigan) | 3,761.14 mi (6,052.98 km) |
| Hertford to Ronkonkoma (New York) | 3,417.18 mi (5,499.42 km) |
| Hertford to Roosevelt (New York) | 3,441.25 mi (5,538.16 km) |
| Hertford to Rosamond (California) | 5,381.18 mi (8,660.17 km) |
| Hertford to Rosaryville (Maryland) | 3,658.17 mi (5,887.26 km) |
| Hertford to Roscoe (Illinois) | 3,966.49 mi (6,383.45 km) |
| Hertford to Rose Hill (Virginia) | 3,668.71 mi (5,904.22 km) |
| Hertford to Roseburg (Oregon) | 5,049.88 mi (8,127.00 km) |
| Hertford to Rosedale (California) | 5,382.20 mi (8,661.82 km) |
| Hertford to Rosedale (Maryland) | 3,619.98 mi (5,825.80 km) |
| Hertford to Roselle (Illinois) | 3,952.66 mi (6,361.20 km) |
| Hertford to Roselle (New Jersey) | 3,469.91 mi (5,584.28 km) |
| Hertford to Roselle Park (New Jersey) | 3,469.63 mi (5,583.83 km) |
| Hertford to Rosemead (California) | 5,422.66 mi (8,726.93 km) |
