| Groves to Oerlinghausen | 5,107.81 mi (8,220.23 km) |
| Groves to Oestrich-Winkel | 5,146.84 mi (8,283.04 km) |
| Groves to Offenburg | 5,194.81 mi (8,360.23 km) |
| Groves to Oftersheim | 5,190.63 mi (8,353.51 km) |
| Groves to Ohrdruf | 5,223.93 mi (8,407.11 km) |
| Groves to Ohringen | 5,232.38 mi (8,420.70 km) |
| Groves to Olbernhau | 5,327.14 mi (8,573.20 km) |
| Groves to Olching | 5,338.76 mi (8,591.90 km) |
| Groves to Oldenburg | 5,052.79 mi (8,131.69 km) |
| Groves to Oldenburg in Holstein | 5,110.53 mi (8,224.60 km) |
| Groves to Olfen | 5,067.50 mi (8,155.35 km) |
| Groves to Olpe | 5,107.20 mi (8,219.24 km) |
| Groves to Olsberg | 5,121.13 mi (8,241.67 km) |
| Groves to Oranienburg | 5,247.92 mi (8,445.71 km) |
| Groves to Ortenberg | 5,176.00 mi (8,329.97 km) |
