| Alliance to Octeville | 3,728.37 mi (6,000.23 km) |
| Alliance to Oignies | 3,891.88 mi (6,263.37 km) |
| Alliance to Oissel | 3,848.44 mi (6,193.46 km) |
| Alliance to Olivet | 3,925.99 mi (6,318.27 km) |
| Alliance to Ollioules | 4,250.04 mi (6,839.77 km) |
| Alliance to Olonne-sur-Mer | 3,810.50 mi (6,132.41 km) |
| Alliance to Oloron-Sainte-Marie | 3,964.56 mi (6,380.34 km) |
| Alliance to Onet Village | 4,067.05 mi (6,545.28 km) |
| Alliance to Onnaing | 3,918.30 mi (6,305.90 km) |
| Alliance to Orange | 4,170.41 mi (6,711.63 km) |
| Alliance to Orchies | 3,901.66 mi (6,279.12 km) |
| Alliance to Orleans | 3,925.16 mi (6,316.93 km) |
| Alliance to Orly | 3,919.43 mi (6,307.72 km) |
| Alliance to Ormesson-sur-Marne | 3,924.11 mi (6,315.24 km) |
| Alliance to Orsay | 3,912.41 mi (6,296.42 km) |
