| Sioux City to Melzo | 4,840.60 mi (7,790.19 km) |
| Sioux City to Mendicino | 5,387.75 mi (8,670.74 km) |
| Sioux City to Menfi | 5,345.86 mi (8,603.34 km) |
| Sioux City to Mentana | 5,121.86 mi (8,242.84 km) |
| Sioux City to Merano | 4,849.96 mi (7,805.25 km) |
| Sioux City to Merate | 4,832.14 mi (7,776.58 km) |
| Sioux City to Mercato San Severino | 5,259.90 mi (8,465.00 km) |
| Sioux City to Mercogliano | 5,252.20 mi (8,452.60 km) |
| Sioux City to Mesagne | 5,381.59 mi (8,660.83 km) |
| Sioux City to Messina | 5,416.65 mi (8,717.26 km) |
| Sioux City to Mestre | 4,942.93 mi (7,954.88 km) |
| Sioux City to Mestrino | 4,927.97 mi (7,930.79 km) |
| Sioux City to Milan | 4,833.80 mi (7,779.25 km) |
| Sioux City to Milazzo | 5,403.46 mi (8,696.02 km) |
| Sioux City to Minerbio | 4,956.05 mi (7,975.99 km) |
