| Mason City to Mombris | 4,484.55 mi (7,217.19 km) |
| Mason City to Monchengladbach | 4,341.79 mi (6,987.43 km) |
| Mason City to Monschau | 4,361.63 mi (7,019.37 km) |
| Mason City to Montabaur | 4,422.00 mi (7,116.51 km) |
| Mason City to Moosburg | 4,651.06 mi (7,485.16 km) |
| Mason City to Morbach | 4,422.81 mi (7,117.83 km) |
| Mason City to Morfelden-Walldorf | 4,466.96 mi (7,188.88 km) |
| Mason City to Morlenbach | 4,489.39 mi (7,224.98 km) |
| Mason City to Morsbach | 4,400.31 mi (7,081.61 km) |
| Mason City to Mosbach | 4,514.39 mi (7,265.21 km) |
| Mason City to Mosigkau | 4,512.46 mi (7,262.11 km) |
| Mason City to Mossingen | 4,551.90 mi (7,325.57 km) |
| Mason City to Much | 4,387.19 mi (7,060.50 km) |
| Mason City to Mucheln | 4,521.36 mi (7,276.43 km) |
| Mason City to Muhlacker | 4,520.74 mi (7,275.42 km) |
