| Northallerton to Octeville | 325.62 mi (524.03 km) |
| Northallerton to Oignies | 325.73 mi (524.22 km) |
| Northallerton to Oissel | 361.50 mi (581.77 km) |
| Northallerton to Olivet | 469.91 mi (756.25 km) |
| Northallerton to Ollioules | 840.69 mi (1,352.97 km) |
| Northallerton to Olonne-sur-Mer | 539.26 mi (867.85 km) |
| Northallerton to Oloron-Sainte-Marie | 770.84 mi (1,240.55 km) |
| Northallerton to Onet Village | 712.10 mi (1,146.01 km) |
| Northallerton to Onnaing | 345.45 mi (555.95 km) |
| Northallerton to Orange | 758.10 mi (1,220.05 km) |
| Northallerton to Orchies | 331.56 mi (533.60 km) |
| Northallerton to Orleans | 467.47 mi (752.31 km) |
| Northallerton to Orly | 419.78 mi (675.58 km) |
| Northallerton to Ormesson-sur-Marne | 419.58 mi (675.25 km) |
| Northallerton to Orsay | 419.40 mi (674.95 km) |
