| Vatra Dornei to Oerlinghausen | 809.66 mi (1,303.02 km) |
| Vatra Dornei to Oestrich-Winkel | 810.98 mi (1,305.15 km) |
| Vatra Dornei to Offenburg | 809.05 mi (1,302.03 km) |
| Vatra Dornei to Oftersheim | 781.03 mi (1,256.94 km) |
| Vatra Dornei to Ohrdruf | 702.78 mi (1,131.01 km) |
| Vatra Dornei to Ohringen | 739.06 mi (1,189.41 km) |
| Vatra Dornei to Olbernhau | 590.51 mi (950.33 km) |
| Vatra Dornei to Olching | 653.82 mi (1,052.22 km) |
| Vatra Dornei to Oldenburg | 853.97 mi (1,374.33 km) |
| Vatra Dornei to Oldenburg in Holstein | 791.26 mi (1,273.41 km) |
| Vatra Dornei to Olfen | 858.08 mi (1,380.95 km) |
| Vatra Dornei to Olpe | 828.85 mi (1,333.90 km) |
| Vatra Dornei to Olsberg | 806.20 mi (1,297.46 km) |
| Vatra Dornei to Oranienburg | 653.55 mi (1,051.78 km) |
| Vatra Dornei to Ortenberg | 768.10 mi (1,236.14 km) |
