| Groningen to Rockville (Maryland) | 3,885.60 mi (6,253.27 km) |
| Groningen to Rockville Centre (New York) | 3,675.08 mi (5,914.47 km) |
| Groningen to Rockwall (Texas) | 4,920.05 mi (7,918.05 km) |
| Groningen to Rocky Mount (North Carolina) | 4,063.08 mi (6,538.89 km) |
| Groningen to Rocky Point (New York) | 3,635.32 mi (5,850.47 km) |
| Groningen to Rocky River (Ohio) | 3,947.17 mi (6,352.36 km) |
| Groningen to Roessleville (New York) | 3,587.22 mi (5,773.08 km) |
| Groningen to Rogers (Arkansas) | 4,655.60 mi (7,492.47 km) |
| Groningen to Rogers (Minnesota) | 4,173.74 mi (6,716.99 km) |
| Groningen to Rohnert Park (California) | 5,422.47 mi (8,726.62 km) |
| Groningen to Rolla (Missouri) | 4,484.58 mi (7,217.23 km) |
| Groningen to Rolling Meadows (Illinois) | 4,140.55 mi (6,663.58 km) |
| Groningen to Roma (Texas) | 5,371.30 mi (8,644.27 km) |
| Groningen to Rome (Georgia) | 4,433.28 mi (7,134.67 km) |
| Groningen to Rome (New York) | 3,627.15 mi (5,837.33 km) |
