| Troy to Noventa Vicentina | 4,421.16 mi (7,115.16 km) |
| Troy to Novi di Modena | 4,411.46 mi (7,099.56 km) |
| Troy to Novi Ligure | 4,331.38 mi (6,970.68 km) |
| Troy to Nuoro | 4,530.75 mi (7,291.54 km) |
| Troy to Occhiobello | 4,437.52 mi (7,141.49 km) |
| Troy to Oderzo | 4,439.09 mi (7,144.03 km) |
| Troy to Oggiono | 4,314.56 mi (6,943.61 km) |
| Troy to Olbia | 4,513.44 mi (7,263.67 km) |
| Troy to Oleggio | 4,292.85 mi (6,908.68 km) |
| Troy to Olgiate Comasco | 4,299.22 mi (6,918.92 km) |
| Troy to Olgiate Olona | 4,301.63 mi (6,922.80 km) |
| Troy to Omegna | 4,273.14 mi (6,876.95 km) |
| Troy to Opera | 4,324.66 mi (6,959.87 km) |
| Troy to Oppeano | 4,406.58 mi (7,091.71 km) |
| Troy to Orbassano | 4,271.02 mi (6,873.54 km) |
