| Quarteira to Octeville | 925.52 mi (1,489.48 km) |
| Quarteira to Oignies | 1,076.12 mi (1,731.85 km) |
| Quarteira to Oissel | 964.50 mi (1,552.22 km) |
| Quarteira to Olivet | 901.81 mi (1,451.32 km) |
| Quarteira to Ollioules | 846.58 mi (1,362.44 km) |
| Quarteira to Olonne-sur-Mer | 730.27 mi (1,175.26 km) |
| Quarteira to Oloron-Sainte-Marie | 579.11 mi (931.98 km) |
| Quarteira to Onet Village | 752.46 mi (1,210.96 km) |
| Quarteira to Onnaing | 1,087.11 mi (1,749.54 km) |
| Quarteira to Orange | 833.50 mi (1,341.38 km) |
| Quarteira to Orchies | 1,082.79 mi (1,742.58 km) |
| Quarteira to Orleans | 904.15 mi (1,455.09 km) |
| Quarteira to Orly | 963.83 mi (1,551.13 km) |
| Quarteira to Ormesson-sur-Marne | 970.14 mi (1,561.29 km) |
| Quarteira to Orsay | 955.68 mi (1,538.02 km) |
