| Demir Hisar to Octeville | 1,243.97 mi (2,001.98 km) |
| Demir Hisar to Oignies | 1,079.88 mi (1,737.90 km) |
| Demir Hisar to Oissel | 1,122.21 mi (1,806.03 km) |
| Demir Hisar to Olivet | 1,051.69 mi (1,692.53 km) |
| Demir Hisar to Ollioules | 796.17 mi (1,281.31 km) |
| Demir Hisar to Olonne-sur-Mer | 1,196.75 mi (1,925.99 km) |
| Demir Hisar to Oloron-Sainte-Marie | 1,121.26 mi (1,804.49 km) |
| Demir Hisar to Onet Village | 965.94 mi (1,554.52 km) |
| Demir Hisar to Onnaing | 1,053.98 mi (1,696.22 km) |
| Demir Hisar to Orange | 855.16 mi (1,376.25 km) |
| Demir Hisar to Orchies | 1,070.48 mi (1,722.76 km) |
| Demir Hisar to Orleans | 1,052.18 mi (1,693.32 km) |
| Demir Hisar to Orly | 1,051.96 mi (1,692.96 km) |
| Demir Hisar to Ormesson-sur-Marne | 1,046.97 mi (1,684.93 km) |
| Demir Hisar to Orsay | 1,059.41 mi (1,704.96 km) |
