| Rio Grande City to Miranda de Ebro | 5,284.70 mi (8,504.91 km) |
| Rio Grande City to Mislata | 5,496.31 mi (8,845.46 km) |
| Rio Grande City to Moana | 5,019.99 mi (8,078.90 km) |
| Rio Grande City to Moguer | 5,240.82 mi (8,434.28 km) |
| Rio Grande City to Molina de Segura | 5,499.92 mi (8,851.27 km) |
| Rio Grande City to Molins de Rey | 5,551.75 mi (8,934.68 km) |
| Rio Grande City to Mollerusa | 5,493.19 mi (8,840.44 km) |
| Rio Grande City to Mollet | 5,556.95 mi (8,943.05 km) |
| Rio Grande City to Moncada | 5,557.43 mi (8,943.82 km) |
| Rio Grande City to Moncada | 5,495.16 mi (8,843.60 km) |
| Rio Grande City to Monforte de Lemos | 5,073.30 mi (8,164.70 km) |
| Rio Grande City to Monforte del Cid | 5,513.88 mi (8,873.74 km) |
| Rio Grande City to Mongat | 5,562.26 mi (8,951.60 km) |
| Rio Grande City to Monovar | 5,506.90 mi (8,862.49 km) |
| Rio Grande City to Monserrat | 5,490.80 mi (8,836.59 km) |
