| Portchester to Octeville | 87.08 mi (140.14 km) |
| Portchester to Oignies | 182.00 mi (292.90 km) |
| Portchester to Oissel | 142.65 mi (229.57 km) |
| Portchester to Olivet | 246.57 mi (396.82 km) |
| Portchester to Ollioules | 624.70 mi (1,005.36 km) |
| Portchester to Olonne-sur-Mer | 298.99 mi (481.18 km) |
| Portchester to Oloron-Sainte-Marie | 528.96 mi (851.28 km) |
| Portchester to Onet Village | 479.60 mi (771.84 km) |
| Portchester to Onnaing | 209.18 mi (336.64 km) |
| Portchester to Orange | 539.20 mi (867.77 km) |
| Portchester to Orchies | 192.81 mi (310.29 km) |
| Portchester to Orleans | 244.53 mi (393.54 km) |
| Portchester to Orly | 213.41 mi (343.46 km) |
| Portchester to Ormesson-sur-Marne | 216.25 mi (348.03 km) |
| Portchester to Orsay | 209.07 mi (336.46 km) |
