| Rio Grande City to Mechernich | 5,454.92 mi (8,778.84 km) |
| Rio Grande City to Meckenbeuren | 5,668.38 mi (9,122.37 km) |
| Rio Grande City to Meckenheim | 5,467.94 mi (8,799.81 km) |
| Rio Grande City to Meerane | 5,665.23 mi (9,117.31 km) |
| Rio Grande City to Meerbusch | 5,433.69 mi (8,744.68 km) |
| Rio Grande City to Meine | 5,539.15 mi (8,914.40 km) |
| Rio Grande City to Meinerzhagen | 5,475.39 mi (8,811.79 km) |
| Rio Grande City to Meiningen | 5,600.12 mi (9,012.52 km) |
| Rio Grande City to Meissen | 5,690.64 mi (9,158.20 km) |
| Rio Grande City to Meitingen | 5,688.62 mi (9,154.95 km) |
| Rio Grande City to Melle | 5,465.16 mi (8,795.32 km) |
| Rio Grande City to Melsungen | 5,547.02 mi (8,927.06 km) |
| Rio Grande City to Memmelsdorf | 5,642.55 mi (9,080.80 km) |
| Rio Grande City to Memmingen | 5,682.69 mi (9,145.41 km) |
| Rio Grande City to Mendig | 5,486.73 mi (8,830.03 km) |
