| Avanos to Oerlinghausen | 1,552.79 mi (2,498.97 km) |
| Avanos to Oestrich-Winkel | 1,526.12 mi (2,456.06 km) |
| Avanos to Offenburg | 1,495.21 mi (2,406.30 km) |
| Avanos to Oftersheim | 1,486.64 mi (2,392.52 km) |
| Avanos to Ohrdruf | 1,438.25 mi (2,314.64 km) |
| Avanos to Ohringen | 1,443.85 mi (2,323.66 km) |
| Avanos to Olbernhau | 1,332.70 mi (2,144.78 km) |
| Avanos to Olching | 1,342.05 mi (2,159.81 km) |
| Avanos to Oldenburg | 1,606.32 mi (2,585.13 km) |
| Avanos to Oldenburg in Holstein | 1,553.49 mi (2,500.10 km) |
| Avanos to Olfen | 1,595.41 mi (2,567.57 km) |
| Avanos to Olpe | 1,558.66 mi (2,508.42 km) |
| Avanos to Olsberg | 1,541.93 mi (2,481.50 km) |
| Avanos to Oranienburg | 1,413.42 mi (2,274.68 km) |
| Avanos to Ortenberg | 1,491.73 mi (2,400.70 km) |
