| Oppegard to Noventa Vicentina | 1,002.96 mi (1,614.11 km) |
| Oppegard to Novi di Modena | 1,029.44 mi (1,656.72 km) |
| Oppegard to Novi Ligure | 1,042.03 mi (1,676.99 km) |
| Oppegard to Nuoro | 1,347.12 mi (2,167.98 km) |
| Oppegard to Occhiobello | 1,028.00 mi (1,654.41 km) |
| Oppegard to Oderzo | 970.64 mi (1,562.10 km) |
| Oppegard to Oggiono | 969.75 mi (1,560.67 km) |
| Oppegard to Olbia | 1,305.37 mi (2,100.79 km) |
| Oppegard to Oleggio | 984.63 mi (1,584.60 km) |
| Oppegard to Olgiate Comasco | 970.84 mi (1,562.42 km) |
| Oppegard to Olgiate Olona | 981.45 mi (1,579.50 km) |
| Oppegard to Omegna | 966.37 mi (1,555.22 km) |
| Oppegard to Opera | 997.70 mi (1,605.64 km) |
| Oppegard to Oppeano | 1,001.47 mi (1,611.70 km) |
| Oppegard to Orbassano | 1,030.41 mi (1,658.29 km) |
