| Harpenden to Rodgau | 420.76 mi (677.16 km) |
| Harpenden to Roding | 592.76 mi (953.96 km) |
| Harpenden to Rodinghausen | 376.46 mi (605.85 km) |
| Harpenden to Roetgen | 294.61 mi (474.13 km) |
| Harpenden to Rommerskirchen | 308.11 mi (495.86 km) |
| Harpenden to Ronnenberg | 426.14 mi (685.80 km) |
| Harpenden to Rosbach vor der Hohe | 406.61 mi (654.38 km) |
| Harpenden to Rosdorf | 439.62 mi (707.50 km) |
| Harpenden to Rosenheim | 619.20 mi (996.50 km) |
| Harpenden to Rosrath | 331.09 mi (532.84 km) |
| Harpenden to Rossdorf | 419.50 mi (675.12 km) |
| Harpenden to Rosstal | 519.57 mi (836.16 km) |
| Harpenden to Rostock | 542.00 mi (872.27 km) |
| Harpenden to Rotenburg an der Fulda | 437.78 mi (704.54 km) |
| Harpenden to Roth | 532.38 mi (856.79 km) |
