| Trancoso to Octeville | 670.74 mi (1,079.45 km) |
| Trancoso to Oignies | 833.58 mi (1,341.52 km) |
| Trancoso to Oissel | 719.71 mi (1,158.26 km) |
| Trancoso to Olivet | 668.71 mi (1,076.18 km) |
| Trancoso to Ollioules | 696.48 mi (1,120.88 km) |
| Trancoso to Olonne-sur-Mer | 485.22 mi (780.88 km) |
| Trancoso to Oloron-Sainte-Marie | 384.13 mi (618.19 km) |
| Trancoso to Onet Village | 562.71 mi (905.59 km) |
| Trancoso to Onnaing | 847.04 mi (1,363.18 km) |
| Trancoso to Orange | 660.95 mi (1,063.70 km) |
| Trancoso to Orchies | 841.09 mi (1,353.60 km) |
| Trancoso to Orleans | 670.83 mi (1,079.60 km) |
| Trancoso to Orly | 727.49 mi (1,170.78 km) |
| Trancoso to Ormesson-sur-Marne | 734.21 mi (1,181.60 km) |
| Trancoso to Orsay | 718.69 mi (1,156.62 km) |
