| Omurtag to Oignies | 1,212.75 mi (1,951.73 km) |
| Omurtag to Oissel | 1,277.90 mi (2,056.58 km) |
| Omurtag to Olivet | 1,226.60 mi (1,974.03 km) |
| Omurtag to Ollioules | 1,034.80 mi (1,665.35 km) |
| Omurtag to Olonne-sur-Mer | 1,394.16 mi (2,243.68 km) |
| Omurtag to Oloron-Sainte-Marie | 1,356.33 mi (2,182.79 km) |
| Omurtag to Onet Village | 1,188.38 mi (1,912.52 km) |
| Omurtag to Onnaing | 1,185.62 mi (1,908.08 km) |
| Omurtag to Orange | 1,080.05 mi (1,738.17 km) |
| Omurtag to Orchies | 1,202.26 mi (1,934.84 km) |
| Omurtag to Orleans | 1,226.52 mi (1,973.89 km) |
| Omurtag to Orly | 1,212.74 mi (1,951.71 km) |
| Omurtag to Ormesson-sur-Marne | 1,206.70 mi (1,942.00 km) |
| Omurtag to Orsay | 1,221.44 mi (1,965.72 km) |
| Omurtag to Orthez | 1,361.41 mi (2,190.98 km) |
