| Ventspils to Oerlinghausen | 635.71 mi (1,023.08 km) |
| Ventspils to Oestrich-Winkel | 751.89 mi (1,210.05 km) |
| Ventspils to Offenburg | 835.38 mi (1,344.42 km) |
| Ventspils to Oftersheim | 767.99 mi (1,235.97 km) |
| Ventspils to Ohrdruf | 629.77 mi (1,013.51 km) |
| Ventspils to Ohringen | 752.03 mi (1,210.27 km) |
| Ventspils to Olbernhau | 571.56 mi (919.83 km) |
| Ventspils to Olching | 764.26 mi (1,229.96 km) |
| Ventspils to Oldenburg | 600.76 mi (966.82 km) |
| Ventspils to Oldenburg in Holstein | 465.73 mi (749.51 km) |
| Ventspils to Olfen | 688.52 mi (1,108.07 km) |
| Ventspils to Olpe | 706.51 mi (1,137.02 km) |
| Ventspils to Olsberg | 670.25 mi (1,078.66 km) |
| Ventspils to Oranienburg | 459.14 mi (738.92 km) |
| Ventspils to Ortenberg | 702.45 mi (1,130.49 km) |
