| Pembroke Dock to Octeville | 203.21 mi (327.03 km) |
| Pembroke Dock to Oignies | 354.64 mi (570.74 km) |
| Pembroke Dock to Oissel | 310.88 mi (500.32 km) |
| Pembroke Dock to Olivet | 403.82 mi (649.88 km) |
| Pembroke Dock to Ollioules | 775.47 mi (1,248.00 km) |
| Pembroke Dock to Olonne-sur-Mer | 384.04 mi (618.06 km) |
| Pembroke Dock to Oloron-Sainte-Marie | 620.96 mi (999.35 km) |
| Pembroke Dock to Onet Village | 613.85 mi (987.90 km) |
| Pembroke Dock to Onnaing | 381.74 mi (614.35 km) |
| Pembroke Dock to Orange | 689.14 mi (1,109.06 km) |
| Pembroke Dock to Orchies | 365.09 mi (587.56 km) |
| Pembroke Dock to Orleans | 402.27 mi (647.39 km) |
| Pembroke Dock to Orly | 382.86 mi (616.15 km) |
| Pembroke Dock to Ormesson-sur-Marne | 386.68 mi (622.30 km) |
| Pembroke Dock to Orsay | 377.07 mi (606.83 km) |
