| Hertford to Robertsville (New Jersey) | 3,485.02 mi (5,608.59 km) |
| Hertford to Robinson (Texas) | 4,822.63 mi (7,761.27 km) |
| Hertford to Robstown (Texas) | 5,036.48 mi (8,105.43 km) |
| Hertford to Rochester (Michigan) | 3,730.74 mi (6,004.05 km) |
| Hertford to Rochester (Minnesota) | 4,019.17 mi (6,468.22 km) |
| Hertford to Rochester (New Hampshire) | 3,224.63 mi (5,189.53 km) |
| Hertford to Rochester (New York) | 3,495.04 mi (5,624.72 km) |
| Hertford to Rochester Hills (Michigan) | 3,733.14 mi (6,007.92 km) |
| Hertford to Rock Hill (South Carolina) | 4,007.76 mi (6,449.87 km) |
| Hertford to Rock Island (Illinois) | 4,070.66 mi (6,551.09 km) |
| Hertford to Rock Springs (Wyoming) | 4,718.01 mi (7,592.90 km) |
| Hertford to Rockford (Illinois) | 3,976.37 mi (6,399.35 km) |
| Hertford to Rockledge (Florida) | 4,320.94 mi (6,953.88 km) |
| Hertford to Rocklin (California) | 5,246.58 mi (8,443.55 km) |
| Hertford to Rockport (Texas) | 5,000.61 mi (8,047.70 km) |
