| Ventspils to Orbetello | 1,128.25 mi (1,815.75 km) |
| Ventspils to Oria | 1,180.15 mi (1,899.27 km) |
| Ventspils to Oristano | 1,340.31 mi (2,157.02 km) |
| Ventspils to Orta Nova | 1,139.51 mi (1,833.87 km) |
| Ventspils to Orte | 1,107.24 mi (1,781.93 km) |
| Ventspils to Ortona | 1,085.74 mi (1,747.33 km) |
| Ventspils to Orvieto | 1,094.80 mi (1,761.92 km) |
| Ventspils to Orzinuovi | 965.60 mi (1,553.98 km) |
| Ventspils to Osimo | 1,023.03 mi (1,646.40 km) |
| Ventspils to Ospitaletto | 952.97 mi (1,533.65 km) |
| Ventspils to Ostuni | 1,164.50 mi (1,874.08 km) |
| Ventspils to Ottaviano | 1,185.49 mi (1,907.86 km) |
| Ventspils to Ovada | 1,041.09 mi (1,675.47 km) |
| Ventspils to Ozieri | 1,288.70 mi (2,073.96 km) |
| Ventspils to Paceco | 1,402.20 mi (2,256.62 km) |
