| Mountain Top to Octeville | 3,502.40 mi (5,636.57 km) |
| Mountain Top to Oignies | 3,672.48 mi (5,910.29 km) |
| Mountain Top to Oissel | 3,623.88 mi (5,832.08 km) |
| Mountain Top to Olivet | 3,697.79 mi (5,951.02 km) |
| Mountain Top to Ollioules | 4,013.28 mi (6,458.75 km) |
| Mountain Top to Olonne-sur-Mer | 3,575.41 mi (5,754.07 km) |
| Mountain Top to Oloron-Sainte-Marie | 3,722.02 mi (5,990.01 km) |
| Mountain Top to Onet Village | 3,830.16 mi (6,164.05 km) |
| Mountain Top to Onnaing | 3,699.20 mi (5,953.28 km) |
| Mountain Top to Orange | 3,935.05 mi (6,332.85 km) |
| Mountain Top to Orchies | 3,682.51 mi (5,926.43 km) |
| Mountain Top to Orleans | 3,697.07 mi (5,949.87 km) |
| Mountain Top to Orly | 3,694.23 mi (5,945.29 km) |
| Mountain Top to Ormesson-sur-Marne | 3,699.16 mi (5,953.23 km) |
| Mountain Top to Orsay | 3,686.90 mi (5,933.48 km) |
