| Debrecen to Octeville | 1,069.70 mi (1,721.52 km) |
| Debrecen to Oignies | 866.73 mi (1,394.87 km) |
| Debrecen to Oissel | 947.20 mi (1,524.37 km) |
| Debrecen to Olivet | 915.70 mi (1,473.68 km) |
| Debrecen to Ollioules | 822.99 mi (1,324.47 km) |
| Debrecen to Olonne-sur-Mer | 1,100.48 mi (1,771.04 km) |
| Debrecen to Oloron-Sainte-Marie | 1,116.40 mi (1,796.67 km) |
| Debrecen to Onet Village | 938.14 mi (1,509.79 km) |
| Debrecen to Onnaing | 839.66 mi (1,351.30 km) |
| Debrecen to Orange | 841.46 mi (1,354.20 km) |
| Debrecen to Orchies | 855.83 mi (1,377.32 km) |
| Debrecen to Orleans | 915.04 mi (1,472.62 km) |
| Debrecen to Orly | 889.01 mi (1,430.72 km) |
| Debrecen to Ormesson-sur-Marne | 882.30 mi (1,419.92 km) |
| Debrecen to Orsay | 898.47 mi (1,445.95 km) |
