| Romsey to Octeville | 94.33 mi (151.82 km) |
| Romsey to Oignies | 199.60 mi (321.23 km) |
| Romsey to Oissel | 161.45 mi (259.82 km) |
| Romsey to Olivet | 264.38 mi (425.48 km) |
| Romsey to Ollioules | 642.40 mi (1,033.85 km) |
| Romsey to Olonne-sur-Mer | 307.92 mi (495.55 km) |
| Romsey to Oloron-Sainte-Marie | 540.18 mi (869.34 km) |
| Romsey to Onet Village | 495.42 mi (797.30 km) |
| Romsey to Onnaing | 226.80 mi (365.00 km) |
| Romsey to Orange | 556.75 mi (896.00 km) |
| Romsey to Orchies | 210.31 mi (338.46 km) |
| Romsey to Orleans | 262.39 mi (422.28 km) |
| Romsey to Orly | 232.46 mi (374.12 km) |
| Romsey to Ormesson-sur-Marne | 235.39 mi (378.82 km) |
| Romsey to Orsay | 227.98 mi (366.90 km) |
