| Sermoneta to Octeville | 898.21 mi (1,445.52 km) |
| Sermoneta to Oignies | 779.31 mi (1,254.17 km) |
| Sermoneta to Oissel | 787.04 mi (1,266.62 km) |
| Sermoneta to Olivet | 696.31 mi (1,120.61 km) |
| Sermoneta to Ollioules | 380.48 mi (612.33 km) |
| Sermoneta to Olonne-sur-Mer | 808.12 mi (1,300.54 km) |
| Sermoneta to Oloron-Sainte-Marie | 702.13 mi (1,129.97 km) |
| Sermoneta to Onet Village | 559.74 mi (900.81 km) |
| Sermoneta to Onnaing | 757.68 mi (1,219.37 km) |
| Sermoneta to Orange | 450.77 mi (725.45 km) |
| Sermoneta to Orchies | 772.34 mi (1,242.96 km) |
| Sermoneta to Orleans | 697.52 mi (1,122.54 km) |
| Sermoneta to Orly | 715.27 mi (1,151.11 km) |
| Sermoneta to Ormesson-sur-Marne | 712.09 mi (1,146.01 km) |
| Sermoneta to Orsay | 720.46 mi (1,159.46 km) |
