| Rio Grande City to Massarosa | 5,837.81 mi (9,395.04 km) |
| Rio Grande City to Matelica | 5,973.35 mi (9,613.18 km) |
| Rio Grande City to Matera | 6,226.90 mi (10,021.22 km) |
| Rio Grande City to Matino | 6,317.83 mi (10,167.57 km) |
| Rio Grande City to Mazzarino | 6,255.74 mi (10,067.64 km) |
| Rio Grande City to Meda | 5,724.30 mi (9,212.37 km) |
| Rio Grande City to Medesano | 5,797.35 mi (9,329.94 km) |
| Rio Grande City to Medicina | 5,869.65 mi (9,446.29 km) |
| Rio Grande City to Meldola | 5,900.06 mi (9,495.22 km) |
| Rio Grande City to Melegnano | 5,741.75 mi (9,240.45 km) |
| Rio Grande City to Melendugno | 6,316.54 mi (10,165.49 km) |
| Rio Grande City to Melfi | 6,173.12 mi (9,934.68 km) |
| Rio Grande City to Melilli | 6,301.77 mi (10,141.72 km) |
| Rio Grande City to Melito di Napoli | 6,115.80 mi (9,842.43 km) |
| Rio Grande City to Melito di Porto Salvo | 6,302.37 mi (10,142.68 km) |
