| Seinajoki to Oignies | 1,128.07 mi (1,815.45 km) |
| Seinajoki to Oissel | 1,239.71 mi (1,995.13 km) |
| Seinajoki to Olivet | 1,307.03 mi (2,103.46 km) |
| Seinajoki to Ollioules | 1,520.08 mi (2,446.33 km) |
| Seinajoki to Olonne-sur-Mer | 1,474.40 mi (2,372.82 km) |
| Seinajoki to Oloron-Sainte-Marie | 1,648.49 mi (2,652.98 km) |
| Seinajoki to Onet Village | 1,505.74 mi (2,423.25 km) |
| Seinajoki to Onnaing | 1,118.24 mi (1,799.63 km) |
| Seinajoki to Orange | 1,475.36 mi (2,374.36 km) |
| Seinajoki to Orchies | 1,121.69 mi (1,805.18 km) |
| Seinajoki to Orleans | 1,304.53 mi (2,099.44 km) |
| Seinajoki to Orly | 1,243.20 mi (2,000.74 km) |
| Seinajoki to Ormesson-sur-Marne | 1,237.30 mi (1,991.24 km) |
| Seinajoki to Orsay | 1,250.76 mi (2,012.90 km) |
| Seinajoki to Orthez | 1,634.12 mi (2,629.86 km) |
