| Fort Carson to Noventa Vicentina | 5,416.92 mi (8,717.69 km) |
| Fort Carson to Novi di Modena | 5,413.64 mi (8,712.40 km) |
| Fort Carson to Novi Ligure | 5,344.79 mi (8,601.62 km) |
| Fort Carson to Nuoro | 5,575.75 mi (8,973.31 km) |
| Fort Carson to Occhiobello | 5,436.09 mi (8,748.55 km) |
| Fort Carson to Oderzo | 5,425.76 mi (8,731.92 km) |
| Fort Carson to Oggiono | 5,316.68 mi (8,556.37 km) |
| Fort Carson to Olbia | 5,553.36 mi (8,937.27 km) |
| Fort Carson to Oleggio | 5,299.92 mi (8,529.40 km) |
| Fort Carson to Olgiate Comasco | 5,303.15 mi (8,534.60 km) |
| Fort Carson to Olgiate Olona | 5,307.24 mi (8,541.18 km) |
| Fort Carson to Omegna | 5,278.89 mi (8,495.55 km) |
| Fort Carson to Opera | 5,330.82 mi (8,579.13 km) |
| Fort Carson to Oppeano | 5,403.94 mi (8,696.80 km) |
| Fort Carson to Orbassano | 5,288.12 mi (8,510.41 km) |
