| Alfena to Oerlinghausen | 1,097.46 mi (1,766.19 km) |
| Alfena to Oestrich-Winkel | 998.42 mi (1,606.80 km) |
| Alfena to Offenburg | 945.37 mi (1,521.42 km) |
| Alfena to Oftersheim | 999.88 mi (1,609.16 km) |
| Alfena to Ohrdruf | 1,131.28 mi (1,820.61 km) |
| Alfena to Ohringen | 1,031.51 mi (1,660.06 km) |
| Alfena to Olbernhau | 1,228.64 mi (1,977.30 km) |
| Alfena to Olching | 1,082.14 mi (1,741.54 km) |
| Alfena to Oldenburg | 1,132.27 mi (1,822.21 km) |
| Alfena to Oldenburg in Holstein | 1,267.37 mi (2,039.64 km) |
| Alfena to Olfen | 1,043.20 mi (1,678.88 km) |
| Alfena to Olpe | 1,030.34 mi (1,658.18 km) |
| Alfena to Olsberg | 1,066.58 mi (1,716.50 km) |
| Alfena to Oranienburg | 1,289.31 mi (2,074.94 km) |
| Alfena to Ortenberg | 1,051.13 mi (1,691.63 km) |
