| Oliveira do Hospital to Noventa Vicentina | 1,037.09 mi (1,669.03 km) |
| Oliveira do Hospital to Novi di Modena | 1,001.33 mi (1,611.48 km) |
| Oliveira do Hospital to Novi Ligure | 898.18 mi (1,445.49 km) |
| Oliveira do Hospital to Nuoro | 904.20 mi (1,455.18 km) |
| Oliveira do Hospital to Occhiobello | 1,034.35 mi (1,664.63 km) |
| Oliveira do Hospital to Oderzo | 1,089.89 mi (1,754.01 km) |
| Oliveira do Hospital to Oggiono | 943.68 mi (1,518.70 km) |
| Oliveira do Hospital to Olbia | 909.65 mi (1,463.94 km) |
| Oliveira do Hospital to Oleggio | 906.88 mi (1,459.48 km) |
| Oliveira do Hospital to Olgiate Comasco | 926.07 mi (1,490.37 km) |
| Oliveira do Hospital to Olgiate Olona | 919.10 mi (1,479.14 km) |
| Oliveira do Hospital to Omegna | 902.60 mi (1,452.59 km) |
| Oliveira do Hospital to Opera | 929.62 mi (1,496.07 km) |
| Oliveira do Hospital to Oppeano | 1,020.73 mi (1,642.71 km) |
| Oliveira do Hospital to Orbassano | 843.82 mi (1,358.00 km) |
