| Viseu to Noventa Vicentina | 1,030.67 mi (1,658.71 km) |
| Viseu to Novi di Modena | 995.33 mi (1,601.83 km) |
| Viseu to Novi Ligure | 891.91 mi (1,435.39 km) |
| Viseu to Nuoro | 905.28 mi (1,456.90 km) |
| Viseu to Occhiobello | 1,028.44 mi (1,655.12 km) |
| Viseu to Oderzo | 1,083.01 mi (1,742.94 km) |
| Viseu to Oggiono | 936.03 mi (1,506.40 km) |
| Viseu to Olbia | 909.72 mi (1,464.06 km) |
| Viseu to Oleggio | 899.28 mi (1,447.26 km) |
| Viseu to Olgiate Comasco | 918.31 mi (1,477.88 km) |
| Viseu to Olgiate Olona | 911.53 mi (1,466.96 km) |
| Viseu to Omegna | 894.52 mi (1,439.58 km) |
| Viseu to Opera | 922.51 mi (1,484.64 km) |
| Viseu to Oppeano | 1,014.22 mi (1,632.24 km) |
| Viseu to Orbassano | 836.78 mi (1,346.67 km) |
