| Oak Park to Octeville | 3,955.18 mi (6,365.24 km) |
| Oak Park to Oignies | 4,106.72 mi (6,609.13 km) |
| Oak Park to Oissel | 4,072.20 mi (6,553.58 km) |
| Oak Park to Olivet | 4,155.61 mi (6,687.81 km) |
| Oak Park to Ollioules | 4,493.43 mi (7,231.48 km) |
| Oak Park to Olonne-sur-Mer | 4,052.77 mi (6,522.30 km) |
| Oak Park to Oloron-Sainte-Marie | 4,219.84 mi (6,791.18 km) |
| Oak Park to Onet Village | 4,311.44 mi (6,938.59 km) |
| Oak Park to Onnaing | 4,132.52 mi (6,650.65 km) |
| Oak Park to Orange | 4,411.59 mi (7,099.78 km) |
| Oak Park to Orchies | 4,116.05 mi (6,624.15 km) |
| Oak Park to Orleans | 4,154.58 mi (6,686.15 km) |
| Oak Park to Orly | 4,143.93 mi (6,669.00 km) |
| Oak Park to Ormesson-sur-Marne | 4,148.14 mi (6,675.79 km) |
| Oak Park to Orsay | 4,137.49 mi (6,658.65 km) |
