| Oldenzaal to Noventa Vicentina | 528.87 mi (851.13 km) |
| Oldenzaal to Novi di Modena | 543.78 mi (875.13 km) |
| Oldenzaal to Novi Ligure | 528.96 mi (851.27 km) |
| Oldenzaal to Nuoro | 836.87 mi (1,346.81 km) |
| Oldenzaal to Occhiobello | 553.01 mi (889.99 km) |
| Oldenzaal to Oderzo | 516.67 mi (831.49 km) |
| Oldenzaal to Oggiono | 464.42 mi (747.41 km) |
| Oldenzaal to Olbia | 796.89 mi (1,282.47 km) |
| Oldenzaal to Oleggio | 470.41 mi (757.05 km) |
| Oldenzaal to Olgiate Comasco | 460.66 mi (741.36 km) |
| Oldenzaal to Olgiate Olona | 470.12 mi (756.59 km) |
| Oldenzaal to Omegna | 449.81 mi (723.89 km) |
| Oldenzaal to Opera | 490.10 mi (788.75 km) |
| Oldenzaal to Oppeano | 521.73 mi (839.64 km) |
| Oldenzaal to Orbassano | 505.78 mi (813.97 km) |
