| Gouveia to Noventa Vicentina | 1,020.43 mi (1,642.23 km) |
| Gouveia to Novi di Modena | 984.74 mi (1,584.78 km) |
| Gouveia to Novi Ligure | 881.55 mi (1,418.71 km) |
| Gouveia to Nuoro | 889.59 mi (1,431.66 km) |
| Gouveia to Occhiobello | 1,017.78 mi (1,637.95 km) |
| Gouveia to Oderzo | 1,073.18 mi (1,727.12 km) |
| Gouveia to Oggiono | 926.88 mi (1,491.67 km) |
| Gouveia to Olbia | 894.66 mi (1,439.81 km) |
| Gouveia to Oleggio | 890.09 mi (1,432.45 km) |
| Gouveia to Olgiate Comasco | 909.26 mi (1,463.31 km) |
| Gouveia to Olgiate Olona | 902.30 mi (1,452.12 km) |
| Gouveia to Omegna | 885.76 mi (1,425.49 km) |
| Gouveia to Opera | 912.87 mi (1,469.13 km) |
| Gouveia to Oppeano | 1,004.06 mi (1,615.89 km) |
| Gouveia to Orbassano | 827.08 mi (1,331.06 km) |
