| Seyhan to Octeville | 2,027.53 mi (3,262.99 km) |
| Seyhan to Oignies | 1,843.08 mi (2,966.15 km) |
| Seyhan to Oissel | 1,903.44 mi (3,063.29 km) |
| Seyhan to Olivet | 1,845.00 mi (2,969.24 km) |
| Seyhan to Ollioules | 1,606.98 mi (2,586.18 km) |
| Seyhan to Olonne-sur-Mer | 2,001.64 mi (3,221.33 km) |
| Seyhan to Oloron-Sainte-Marie | 1,931.90 mi (3,109.09 km) |
| Seyhan to Onet Village | 1,776.48 mi (2,858.97 km) |
| Seyhan to Onnaing | 1,816.04 mi (2,922.64 km) |
| Seyhan to Orange | 1,665.77 mi (2,680.80 km) |
| Seyhan to Orchies | 1,832.72 mi (2,949.47 km) |
| Seyhan to Orleans | 1,845.16 mi (2,969.49 km) |
| Seyhan to Orly | 1,836.37 mi (2,955.34 km) |
| Seyhan to Ormesson-sur-Marne | 1,830.64 mi (2,946.12 km) |
| Seyhan to Orsay | 1,844.71 mi (2,968.77 km) |
