| River Ridge to Maryland Heights (Missouri) | 605.40 mi (974.30 km) |
| River Ridge to Marysville (California) | 1,883.04 mi (3,030.46 km) |
| River Ridge to Marysville (Ohio) | 807.93 mi (1,300.24 km) |
| River Ridge to Marysville (Washington) | 2,098.28 mi (3,376.85 km) |
| River Ridge to Maryville (Missouri) | 763.70 mi (1,229.05 km) |
| River Ridge to Maryville (Tennessee) | 539.30 mi (867.92 km) |
| River Ridge to Mason (Ohio) | 730.82 mi (1,176.14 km) |
| River Ridge to Mason City (Iowa) | 926.01 mi (1,490.27 km) |
| River Ridge to Massapequa (New York) | 1,196.05 mi (1,924.86 km) |
| River Ridge to Massapequa Park (New York) | 1,197.51 mi (1,927.20 km) |
| River Ridge to Massillon (Ohio) | 892.96 mi (1,437.07 km) |
| River Ridge to Mastic (New York) | 1,228.81 mi (1,977.59 km) |
| River Ridge to Mastic Beach (New York) | 1,227.72 mi (1,975.82 km) |
| River Ridge to Matteson (Illinois) | 809.90 mi (1,303.42 km) |
| River Ridge to Matthews (North Carolina) | 658.25 mi (1,059.36 km) |
