| Troon to Noventa Vicentina | 1,000.63 mi (1,610.36 km) |
| Troon to Novi di Modena | 1,002.72 mi (1,613.73 km) |
| Troon to Novi Ligure | 950.11 mi (1,529.05 km) |
| Troon to Nuoro | 1,230.16 mi (1,979.75 km) |
| Troon to Occhiobello | 1,021.59 mi (1,644.09 km) |
| Troon to Oderzo | 1,004.55 mi (1,616.66 km) |
| Troon to Oggiono | 908.22 mi (1,461.64 km) |
| Troon to Olbia | 1,197.25 mi (1,926.79 km) |
| Troon to Oleggio | 898.01 mi (1,445.21 km) |
| Troon to Olgiate Comasco | 897.18 mi (1,443.87 km) |
| Troon to Olgiate Olona | 903.18 mi (1,453.52 km) |
| Troon to Omegna | 876.03 mi (1,409.83 km) |
| Troon to Opera | 926.63 mi (1,491.27 km) |
| Troon to Oppeano | 989.05 mi (1,591.72 km) |
| Troon to Orbassano | 902.59 mi (1,452.59 km) |
