| West Monroe to Oerlinghausen | 4,904.53 mi (7,893.09 km) |
| West Monroe to Oestrich-Winkel | 4,944.80 mi (7,957.89 km) |
| West Monroe to Offenburg | 4,993.79 mi (8,036.72 km) |
| West Monroe to Oftersheim | 4,988.85 mi (8,028.78 km) |
| West Monroe to Ohrdruf | 5,020.87 mi (8,080.30 km) |
| West Monroe to Ohringen | 5,030.50 mi (8,095.80 km) |
| West Monroe to Olbernhau | 5,123.67 mi (8,245.74 km) |
| West Monroe to Olching | 5,137.06 mi (8,267.29 km) |
| West Monroe to Oldenburg | 4,849.02 mi (7,803.75 km) |
| West Monroe to Oldenburg in Holstein | 4,905.95 mi (7,895.36 km) |
| West Monroe to Olfen | 4,864.57 mi (7,828.78 km) |
| West Monroe to Olpe | 4,904.59 mi (7,893.17 km) |
| West Monroe to Olsberg | 4,918.21 mi (7,915.10 km) |
| West Monroe to Oranienburg | 5,043.59 mi (8,116.88 km) |
| West Monroe to Ortenberg | 4,973.52 mi (8,004.11 km) |
