| Fort Madison to Noventa Vicentina | 4,830.10 mi (7,773.30 km) |
| Fort Madison to Novi di Modena | 4,822.31 mi (7,760.75 km) |
| Fort Madison to Novi Ligure | 4,745.37 mi (7,636.94 km) |
| Fort Madison to Nuoro | 4,954.21 mi (7,973.04 km) |
| Fort Madison to Occhiobello | 4,847.35 mi (7,801.06 km) |
| Fort Madison to Oderzo | 4,845.33 mi (7,797.81 km) |
| Fort Madison to Oggiono | 4,725.13 mi (7,604.37 km) |
| Fort Madison to Olbia | 4,935.46 mi (7,942.85 km) |
| Fort Madison to Oleggio | 4,704.85 mi (7,571.73 km) |
| Fort Madison to Olgiate Comasco | 4,710.30 mi (7,580.49 km) |
| Fort Madison to Olgiate Olona | 4,713.22 mi (7,585.19 km) |
| Fort Madison to Omegna | 4,684.69 mi (7,539.29 km) |
| Fort Madison to Opera | 4,736.47 mi (7,622.62 km) |
| Fort Madison to Oppeano | 4,815.97 mi (7,750.55 km) |
| Fort Madison to Orbassano | 4,685.95 mi (7,541.31 km) |
