| Holywell to Octeville | 260.99 mi (420.03 km) |
| Holywell to Oignies | 328.27 mi (528.30 km) |
| Holywell to Oissel | 329.32 mi (529.99 km) |
| Holywell to Olivet | 435.96 mi (701.61 km) |
| Holywell to Ollioules | 813.87 mi (1,309.79 km) |
| Holywell to Olonne-sur-Mer | 469.97 mi (756.34 km) |
| Holywell to Oloron-Sainte-Marie | 706.65 mi (1,137.25 km) |
| Holywell to Onet Village | 669.44 mi (1,077.35 km) |
| Holywell to Onnaing | 352.74 mi (567.68 km) |
| Holywell to Orange | 728.74 mi (1,172.80 km) |
| Holywell to Orchies | 336.71 mi (541.89 km) |
| Holywell to Orleans | 433.82 mi (698.16 km) |
| Holywell to Orly | 396.70 mi (638.43 km) |
| Holywell to Ormesson-sur-Marne | 398.28 mi (640.97 km) |
| Holywell to Orsay | 393.89 mi (633.91 km) |
