| Seymour to Octeville | 4,009.88 mi (6,453.27 km) |
| Seymour to Oignies | 4,170.83 mi (6,712.30 km) |
| Seymour to Oissel | 4,129.38 mi (6,645.59 km) |
| Seymour to Olivet | 4,208.16 mi (6,772.38 km) |
| Seymour to Ollioules | 4,534.64 mi (7,297.80 km) |
| Seymour to Olonne-sur-Mer | 4,094.79 mi (6,589.93 km) |
| Seymour to Oloron-Sainte-Marie | 4,250.50 mi (6,840.52 km) |
| Seymour to Onet Village | 4,351.74 mi (7,003.44 km) |
| Seymour to Onnaing | 4,197.12 mi (6,754.61 km) |
| Seymour to Orange | 4,454.67 mi (7,169.10 km) |
| Seymour to Orchies | 4,180.51 mi (6,727.88 km) |
| Seymour to Orleans | 4,207.29 mi (6,770.97 km) |
| Seymour to Orly | 4,200.56 mi (6,760.15 km) |
| Seymour to Ormesson-sur-Marne | 4,205.15 mi (6,767.53 km) |
| Seymour to Orsay | 4,193.66 mi (6,749.05 km) |
