| Seaford to Octeville | 110.36 mi (177.61 km) |
| Seaford to Oignies | 128.53 mi (206.85 km) |
| Seaford to Oissel | 108.03 mi (173.85 km) |
| Seaford to Olivet | 216.53 mi (348.48 km) |
| Seaford to Ollioules | 592.37 mi (953.33 km) |
| Seaford to Olonne-sur-Mer | 304.74 mi (490.43 km) |
| Seaford to Oloron-Sainte-Marie | 524.49 mi (844.08 km) |
| Seaford to Onet Village | 457.44 mi (736.18 km) |
| Seaford to Onnaing | 155.72 mi (250.61 km) |
| Seaford to Orange | 508.04 mi (817.61 km) |
| Seaford to Orchies | 139.32 mi (224.21 km) |
| Seaford to Orleans | 214.20 mi (344.71 km) |
| Seaford to Orly | 173.39 mi (279.05 km) |
| Seaford to Ormesson-sur-Marne | 174.99 mi (281.63 km) |
| Seaford to Orsay | 170.82 mi (274.90 km) |
