| Hemel Hempstead to Robertsville (New Jersey) | 3,470.00 mi (5,584.43 km) |
| Hemel Hempstead to Robinson (Texas) | 4,808.81 mi (7,739.03 km) |
| Hemel Hempstead to Robstown (Texas) | 5,022.30 mi (8,082.61 km) |
| Hemel Hempstead to Rochester (Michigan) | 3,716.93 mi (5,981.82 km) |
| Hemel Hempstead to Rochester (Minnesota) | 4,006.60 mi (6,448.00 km) |
| Hemel Hempstead to Rochester (New Hampshire) | 3,209.77 mi (5,165.62 km) |
| Hemel Hempstead to Rochester (New York) | 3,480.76 mi (5,601.74 km) |
| Hemel Hempstead to Rochester Hills (Michigan) | 3,719.33 mi (5,985.69 km) |
| Hemel Hempstead to Rock Hill (South Carolina) | 3,992.66 mi (6,425.57 km) |
| Hemel Hempstead to Rock Island (Illinois) | 4,057.45 mi (6,529.84 km) |
| Hemel Hempstead to Rock Springs (Wyoming) | 4,707.22 mi (7,575.54 km) |
| Hemel Hempstead to Rockford (Illinois) | 3,963.13 mi (6,378.03 km) |
| Hemel Hempstead to Rockledge (Florida) | 4,305.15 mi (6,928.47 km) |
| Hemel Hempstead to Rocklin (California) | 5,237.24 mi (8,428.52 km) |
| Hemel Hempstead to Rockport (Texas) | 4,986.39 mi (8,024.81 km) |
