| Rio Grande City to Marasesti | 6,408.70 mi (10,313.81 km) |
| Rio Grande City to Marghita | 6,167.73 mi (9,926.00 km) |
| Rio Grande City to Marginea | 6,269.16 mi (10,089.23 km) |
| Rio Grande City to Matca | 6,420.70 mi (10,333.11 km) |
| Rio Grande City to Medgidia | 6,523.02 mi (10,497.79 km) |
| Rio Grande City to Media | 6,294.17 mi (10,129.49 km) |
| Rio Grande City to Miercurea-Ciuc | 6,336.09 mi (10,196.95 km) |
| Rio Grande City to Mioveni | 6,370.28 mi (10,251.97 km) |
| Rio Grande City to Mizil | 6,422.45 mi (10,335.93 km) |
| Rio Grande City to Moinesti | 6,356.48 mi (10,229.77 km) |
| Rio Grande City to Moisei | 6,231.89 mi (10,029.26 km) |
| Rio Grande City to Moldova Noua | 6,259.21 mi (10,073.22 km) |
| Rio Grande City to Moreni | 6,394.74 mi (10,291.33 km) |
| Rio Grande City to Motru | 6,304.57 mi (10,146.23 km) |
| Rio Grande City to Murfatlar | 6,531.93 mi (10,512.13 km) |
