| Riviera Beach to Maryland Heights (Missouri) | 1,020.95 mi (1,643.06 km) |
| Riviera Beach to Marysville (California) | 2,528.19 mi (4,068.73 km) |
| Riviera Beach to Marysville (Ohio) | 947.95 mi (1,525.58 km) |
| Riviera Beach to Marysville (Washington) | 2,689.71 mi (4,328.67 km) |
| Riviera Beach to Maryville (Missouri) | 1,262.76 mi (2,032.21 km) |
| Riviera Beach to Maryville (Tennessee) | 660.81 mi (1,063.48 km) |
| Riviera Beach to Mason (Ohio) | 902.43 mi (1,452.31 km) |
| Riviera Beach to Mason City (Iowa) | 1,349.49 mi (2,171.79 km) |
| Riviera Beach to Massapequa (New York) | 1,030.94 mi (1,659.14 km) |
| Riviera Beach to Massapequa Park (New York) | 1,032.28 mi (1,661.29 km) |
| Riviera Beach to Massillon (Ohio) | 971.02 mi (1,562.71 km) |
| Riviera Beach to Mastic (New York) | 1,053.34 mi (1,695.19 km) |
| Riviera Beach to Mastic Beach (New York) | 1,050.89 mi (1,691.25 km) |
| Riviera Beach to Matteson (Illinois) | 1,106.99 mi (1,781.53 km) |
| Riviera Beach to Matthews (North Carolina) | 577.34 mi (929.14 km) |
