| Horsell to Octeville | 126.82 mi (204.10 km) |
| Horsell to Oignies | 165.90 mi (266.98 km) |
| Horsell to Oissel | 155.42 mi (250.12 km) |
| Horsell to Olivet | 263.53 mi (424.10 km) |
| Horsell to Ollioules | 640.16 mi (1,030.23 km) |
| Horsell to Olonne-sur-Mer | 335.65 mi (540.17 km) |
| Horsell to Oloron-Sainte-Marie | 562.04 mi (904.51 km) |
| Horsell to Onet Village | 502.73 mi (809.06 km) |
| Horsell to Onnaing | 192.69 mi (310.10 km) |
| Horsell to Orange | 555.62 mi (894.19 km) |
| Horsell to Orchies | 175.99 mi (283.24 km) |
| Horsell to Orleans | 261.25 mi (420.44 km) |
| Horsell to Orly | 221.51 mi (356.49 km) |
| Horsell to Ormesson-sur-Marne | 223.07 mi (358.99 km) |
| Horsell to Orsay | 218.90 mi (352.29 km) |
