| Herk-de-Stad to Rockville (Maryland) | 3,889.75 mi (6,259.96 km) |
| Herk-de-Stad to Rockville Centre (New York) | 3,676.98 mi (5,917.53 km) |
| Herk-de-Stad to Rockwall (Texas) | 4,947.46 mi (7,962.16 km) |
| Herk-de-Stad to Rocky Mount (North Carolina) | 4,060.63 mi (6,534.95 km) |
| Herk-de-Stad to Rocky Point (New York) | 3,636.70 mi (5,852.70 km) |
| Herk-de-Stad to Rocky River (Ohio) | 3,965.98 mi (6,382.63 km) |
| Herk-de-Stad to Roessleville (New York) | 3,595.12 mi (5,785.78 km) |
| Herk-de-Stad to Rogers (Arkansas) | 4,685.33 mi (7,540.32 km) |
| Herk-de-Stad to Rogers (Minnesota) | 4,221.42 mi (6,793.72 km) |
| Herk-de-Stad to Rohnert Park (California) | 5,508.18 mi (8,864.57 km) |
| Herk-de-Stad to Rolla (Missouri) | 4,513.21 mi (7,263.31 km) |
| Herk-de-Stad to Rolling Meadows (Illinois) | 4,171.70 mi (6,713.70 km) |
| Herk-de-Stad to Roma (Texas) | 5,391.84 mi (8,677.33 km) |
| Herk-de-Stad to Rome (Georgia) | 4,441.28 mi (7,147.55 km) |
| Herk-de-Stad to Rome (New York) | 3,639.50 mi (5,857.20 km) |
