| Debrecen to Oerlinghausen | 653.97 mi (1,052.47 km) |
| Debrecen to Oestrich-Winkel | 643.16 mi (1,035.06 km) |
| Debrecen to Offenburg | 636.11 mi (1,023.72 km) |
| Debrecen to Oftersheim | 610.79 mi (982.97 km) |
| Debrecen to Ohrdruf | 542.06 mi (872.36 km) |
| Debrecen to Ohringen | 568.40 mi (914.75 km) |
| Debrecen to Olbernhau | 433.41 mi (697.51 km) |
| Debrecen to Olching | 480.35 mi (773.05 km) |
| Debrecen to Oldenburg | 706.07 mi (1,136.31 km) |
| Debrecen to Oldenburg in Holstein | 660.70 mi (1,063.30 km) |
| Debrecen to Olfen | 699.05 mi (1,125.02 km) |
| Debrecen to Olpe | 666.11 mi (1,072.00 km) |
| Debrecen to Olsberg | 646.12 mi (1,039.83 km) |
| Debrecen to Oranienburg | 517.76 mi (833.25 km) |
| Debrecen to Ortenberg | 602.64 mi (969.85 km) |
