| Vennesla to Orbetello | 1,106.17 mi (1,780.22 km) |
| Vennesla to Oria | 1,303.58 mi (2,097.91 km) |
| Vennesla to Oristano | 1,272.06 mi (2,047.19 km) |
| Vennesla to Orta Nova | 1,222.36 mi (1,967.20 km) |
| Vennesla to Orte | 1,112.56 mi (1,790.49 km) |
| Vennesla to Ortona | 1,138.61 mi (1,832.42 km) |
| Vennesla to Orvieto | 1,092.87 mi (1,758.80 km) |
| Vennesla to Orzinuovi | 896.32 mi (1,442.48 km) |
| Vennesla to Osimo | 1,052.50 mi (1,693.83 km) |
| Vennesla to Ospitaletto | 886.23 mi (1,426.24 km) |
| Vennesla to Ostuni | 1,287.37 mi (2,071.81 km) |
| Vennesla to Ottaviano | 1,240.89 mi (1,997.03 km) |
| Vennesla to Ovada | 945.20 mi (1,521.15 km) |
| Vennesla to Ozieri | 1,225.77 mi (1,972.68 km) |
| Vennesla to Paceco | 1,420.22 mi (2,285.62 km) |
