| West Falls Church to Oerlinghausen | 4,012.08 mi (6,456.81 km) |
| West Falls Church to Oestrich-Winkel | 4,041.17 mi (6,503.64 km) |
| West Falls Church to Offenburg | 4,083.02 mi (6,570.99 km) |
| West Falls Church to Oftersheim | 4,083.16 mi (6,571.21 km) |
| West Falls Church to Ohrdruf | 4,125.89 mi (6,639.97 km) |
| West Falls Church to Ohringen | 4,125.46 mi (6,639.29 km) |
| West Falls Church to Olbernhau | 4,232.58 mi (6,811.67 km) |
| West Falls Church to Olching | 4,230.47 mi (6,808.29 km) |
| West Falls Church to Oldenburg | 3,962.43 mi (6,376.92 km) |
| West Falls Church to Oldenburg in Holstein | 4,030.97 mi (6,487.22 km) |
| West Falls Church to Olfen | 3,968.69 mi (6,386.99 km) |
| West Falls Church to Olpe | 4,005.75 mi (6,446.64 km) |
| West Falls Church to Olsberg | 4,022.15 mi (6,473.03 km) |
| West Falls Church to Oranienburg | 4,163.79 mi (6,700.97 km) |
| West Falls Church to Ortenberg | 4,073.32 mi (6,555.38 km) |
