| Thornaby on Tees to Octeville | 341.05 mi (548.86 km) |
| Thornaby on Tees to Oignies | 335.21 mi (539.47 km) |
| Thornaby on Tees to Oissel | 374.51 mi (602.72 km) |
| Thornaby on Tees to Olivet | 482.75 mi (776.91 km) |
| Thornaby on Tees to Ollioules | 852.26 mi (1,371.58 km) |
| Thornaby on Tees to Olonne-sur-Mer | 554.68 mi (892.66 km) |
| Thornaby on Tees to Oloron-Sainte-Marie | 785.82 mi (1,264.66 km) |
| Thornaby on Tees to Onet Village | 725.38 mi (1,167.39 km) |
| Thornaby on Tees to Onnaing | 354.19 mi (570.01 km) |
| Thornaby on Tees to Orange | 770.03 mi (1,239.24 km) |
| Thornaby on Tees to Orchies | 340.67 mi (548.25 km) |
| Thornaby on Tees to Orleans | 480.29 mi (772.95 km) |
| Thornaby on Tees to Orly | 431.70 mi (694.76 km) |
| Thornaby on Tees to Ormesson-sur-Marne | 431.31 mi (694.13 km) |
| Thornaby on Tees to Orsay | 431.56 mi (694.53 km) |
