| Oppegard to Oerlinghausen | 546.87 mi (880.09 km) |
| Oppegard to Oestrich-Winkel | 685.46 mi (1,103.15 km) |
| Oppegard to Offenburg | 790.85 mi (1,272.75 km) |
| Oppegard to Oftersheim | 725.38 mi (1,167.38 km) |
| Oppegard to Ohrdruf | 619.38 mi (996.80 km) |
| Oppegard to Ohringen | 733.66 mi (1,180.72 km) |
| Oppegard to Olbernhau | 638.32 mi (1,027.28 km) |
| Oppegard to Olching | 801.24 mi (1,289.48 km) |
| Oppegard to Oldenburg | 469.69 mi (755.89 km) |
| Oppegard to Oldenburg in Holstein | 379.51 mi (610.76 km) |
| Oppegard to Olfen | 573.30 mi (922.64 km) |
| Oppegard to Olpe | 617.19 mi (993.27 km) |
| Oppegard to Olsberg | 590.15 mi (949.75 km) |
| Oppegard to Oranienburg | 495.17 mi (796.90 km) |
| Oppegard to Ortenberg | 655.56 mi (1,055.02 km) |
