| Castro Daire to Noventa Vicentina | 1,024.89 mi (1,649.40 km) |
| Castro Daire to Novi di Modena | 989.87 mi (1,593.03 km) |
| Castro Daire to Novi Ligure | 886.27 mi (1,426.31 km) |
| Castro Daire to Nuoro | 905.13 mi (1,456.66 km) |
| Castro Daire to Occhiobello | 1,023.03 mi (1,646.41 km) |
| Castro Daire to Oderzo | 1,076.87 mi (1,733.06 km) |
| Castro Daire to Oggiono | 929.37 mi (1,495.67 km) |
| Castro Daire to Olbia | 908.82 mi (1,462.60 km) |
| Castro Daire to Oleggio | 892.66 mi (1,436.60 km) |
| Castro Daire to Olgiate Comasco | 911.56 mi (1,467.02 km) |
| Castro Daire to Olgiate Olona | 904.92 mi (1,456.33 km) |
| Castro Daire to Omegna | 887.54 mi (1,428.35 km) |
| Castro Daire to Opera | 916.25 mi (1,474.56 km) |
| Castro Daire to Oppeano | 1,008.38 mi (1,622.83 km) |
| Castro Daire to Orbassano | 830.60 mi (1,336.72 km) |
