| Sioux City to Montevarchi | 5,010.48 mi (8,063.59 km) |
| Sioux City to Monticello Conte Otto | 4,914.43 mi (7,909.00 km) |
| Sioux City to Montichiari | 4,879.93 mi (7,853.49 km) |
| Sioux City to Montignoso | 4,935.98 mi (7,943.68 km) |
| Sioux City to Montopoli in Val d'Arno | 4,973.76 mi (8,004.49 km) |
| Sioux City to Monza | 4,831.58 mi (7,775.68 km) |
| Sioux City to Morbegno | 4,817.37 mi (7,752.81 km) |
| Sioux City to Mori | 4,881.36 mi (7,855.79 km) |
| Sioux City to Morlupo | 5,110.43 mi (8,224.44 km) |
| Sioux City to Morrovalle | 5,094.13 mi (8,198.20 km) |
| Sioux City to Mortara | 4,827.42 mi (7,768.99 km) |
| Sioux City to Mosciano Sant'Angelo | 5,132.20 mi (8,259.48 km) |
| Sioux City to Motta di Livenza | 4,942.57 mi (7,954.31 km) |
| Sioux City to Motta Sant'Anastasia | 5,428.49 mi (8,736.31 km) |
| Sioux City to Mottola | 5,350.49 mi (8,610.78 km) |
