| Rio Grande City to Mexborough | 5,064.92 mi (8,151.21 km) |
| Rio Grande City to Mickleover | 5,070.07 mi (8,159.49 km) |
| Rio Grande City to Middlesbrough | 5,038.99 mi (8,109.47 km) |
| Rio Grande City to Middleton | 5,028.99 mi (8,093.38 km) |
| Rio Grande City to Middlewich | 5,028.26 mi (8,092.20 km) |
| Rio Grande City to Midsomer Norton | 5,075.03 mi (8,167.46 km) |
| Rio Grande City to Mildenhall | 5,164.65 mi (8,311.70 km) |
| Rio Grande City to Milford Haven | 4,961.50 mi (7,984.76 km) |
| Rio Grande City to Mill Hill | 5,155.71 mi (8,297.32 km) |
| Rio Grande City to Milngavie | 4,892.56 mi (7,873.81 km) |
| Rio Grande City to Milnrow | 5,030.51 mi (8,095.82 km) |
| Rio Grande City to Milton | 5,043.46 mi (8,116.66 km) |
| Rio Grande City to Milton Keynes | 5,123.54 mi (8,245.54 km) |
| Rio Grande City to Minehead | 5,037.10 mi (8,106.43 km) |
| Rio Grande City to Minster | 5,202.15 mi (8,372.05 km) |
