| Northampton to Octeville | 182.82 mi (294.22 km) |
| Northampton to Oignies | 207.20 mi (333.45 km) |
| Northampton to Oissel | 217.58 mi (350.16 km) |
| Northampton to Olivet | 326.12 mi (524.83 km) |
| Northampton to Ollioules | 701.31 mi (1,128.65 km) |
| Northampton to Olonne-sur-Mer | 395.41 mi (636.35 km) |
| Northampton to Oloron-Sainte-Marie | 624.48 mi (1,005.01 km) |
| Northampton to Onet Village | 566.38 mi (911.50 km) |
| Northampton to Onnaing | 231.99 mi (373.35 km) |
| Northampton to Orange | 617.30 mi (993.45 km) |
| Northampton to Orchies | 215.81 mi (347.32 km) |
| Northampton to Orleans | 323.77 mi (521.06 km) |
| Northampton to Orly | 280.83 mi (451.95 km) |
| Northampton to Ormesson-sur-Marne | 281.68 mi (453.33 km) |
| Northampton to Orsay | 279.10 mi (449.17 km) |
