| Riverdale to Mattoon (Illinois) | 463.65 mi (746.18 km) |
| Riverdale to Mauldin (South Carolina) | 146.94 mi (236.47 km) |
| Riverdale to Maumee (Ohio) | 554.64 mi (892.61 km) |
| Riverdale to Maumelle (Arkansas) | 464.99 mi (748.33 km) |
| Riverdale to Mayagüez (Puerto Rico) | 1,505.29 mi (2,422.53 km) |
| Riverdale to Mayfield Heights (Ohio) | 572.81 mi (921.85 km) |
| Riverdale to Mays Chapel (Maryland) | 591.34 mi (951.68 km) |
| Riverdale to Maywood (California) | 1,931.21 mi (3,107.99 km) |
| Riverdale to Maywood (Illinois) | 604.30 mi (972.53 km) |
| Riverdale to McAlester (Oklahoma) | 655.42 mi (1,054.80 km) |
| Riverdale to McAllen (Texas) | 970.21 mi (1,561.40 km) |
| Riverdale to McCalla (Alabama) | 152.14 mi (244.84 km) |
| Riverdale to McComb (Mississippi) | 388.12 mi (624.62 km) |
| Riverdale to McDonough (Georgia) | 17.25 mi (27.77 km) |
| Riverdale to McFarland (California) | 1,975.50 mi (3,179.26 km) |
