| Avellino to Oerlinghausen | 816.51 mi (1,314.04 km) |
| Avellino to Oestrich-Winkel | 707.91 mi (1,139.27 km) |
| Avellino to Offenburg | 620.32 mi (998.31 km) |
| Avellino to Oftersheim | 657.18 mi (1,057.63 km) |
| Avellino to Ohrdruf | 711.78 mi (1,145.50 km) |
| Avellino to Ohringen | 627.45 mi (1,009.78 km) |
| Avellino to Olbernhau | 677.26 mi (1,089.95 km) |
| Avellino to Olching | 531.32 mi (855.08 km) |
| Avellino to Oldenburg | 898.84 mi (1,446.55 km) |
| Avellino to Oldenburg in Holstein | 942.05 mi (1,516.09 km) |
| Avellino to Olfen | 824.64 mi (1,327.14 km) |
| Avellino to Olpe | 772.84 mi (1,243.76 km) |
| Avellino to Olsberg | 780.83 mi (1,256.62 km) |
| Avellino to Oranienburg | 821.14 mi (1,321.49 km) |
| Avellino to Ortenberg | 708.03 mi (1,139.47 km) |
