| Riverdale to McHenry (Illinois) | 641.93 mi (1,033.09 km) |
| Riverdale to McKeesport (Pennsylvania) | 531.66 mi (855.63 km) |
| Riverdale to McKinleyville (California) | 2,220.70 mi (3,573.86 km) |
| Riverdale to McKinney (Texas) | 707.17 mi (1,138.08 km) |
| Riverdale to McLean (Virginia) | 547.20 mi (880.63 km) |
| Riverdale to McMinnville (Oregon) | 2,196.42 mi (3,534.80 km) |
| Riverdale to McMinnville (Tennessee) | 166.07 mi (267.27 km) |
| Riverdale to McNair (Virginia) | 538.75 mi (867.03 km) |
| Riverdale to McPherson (Kansas) | 810.97 mi (1,305.13 km) |
| Riverdale to Mead Valley (California) | 1,881.69 mi (3,028.29 km) |
| Riverdale to Meadow Woods (Florida) | 402.10 mi (647.12 km) |
| Riverdale to Meadowbrook (Virginia) | 472.64 mi (760.64 km) |
| Riverdale to Meadville (Pennsylvania) | 605.11 mi (973.83 km) |
| Riverdale to Mebane (North Carolina) | 339.38 mi (546.18 km) |
| Riverdale to Mechanicsville (Virginia) | 485.41 mi (781.20 km) |
