| Wolf Trap to Octeville | 3,652.26 mi (5,877.75 km) |
| Wolf Trap to Oignies | 3,825.32 mi (6,156.25 km) |
| Wolf Trap to Oissel | 3,774.35 mi (6,074.22 km) |
| Wolf Trap to Olivet | 3,846.31 mi (6,190.04 km) |
| Wolf Trap to Ollioules | 4,156.41 mi (6,689.10 km) |
| Wolf Trap to Olonne-sur-Mer | 3,720.03 mi (5,986.80 km) |
| Wolf Trap to Oloron-Sainte-Marie | 3,861.27 mi (6,214.11 km) |
| Wolf Trap to Onet Village | 3,973.36 mi (6,394.51 km) |
| Wolf Trap to Onnaing | 3,852.13 mi (6,199.41 km) |
| Wolf Trap to Orange | 4,079.16 mi (6,564.77 km) |
| Wolf Trap to Orchies | 3,835.44 mi (6,172.54 km) |
| Wolf Trap to Orleans | 3,845.66 mi (6,188.99 km) |
| Wolf Trap to Orly | 3,844.31 mi (6,186.83 km) |
| Wolf Trap to Ormesson-sur-Marne | 3,849.37 mi (6,194.96 km) |
| Wolf Trap to Orsay | 3,836.82 mi (6,174.77 km) |
