| Riviera Beach to McHenry (Illinois) | 1,170.80 mi (1,884.21 km) |
| Riviera Beach to McKeesport (Pennsylvania) | 937.03 mi (1,508.01 km) |
| Riviera Beach to McKinleyville (California) | 2,675.07 mi (4,305.11 km) |
| Riviera Beach to McKinney (Texas) | 1,085.78 mi (1,747.40 km) |
| Riviera Beach to McLean (Virginia) | 856.65 mi (1,378.65 km) |
| Riviera Beach to McMinnville (Oregon) | 2,683.77 mi (4,319.11 km) |
| Riviera Beach to McMinnville (Tennessee) | 701.25 mi (1,128.55 km) |
| Riviera Beach to McNair (Virginia) | 854.83 mi (1,375.71 km) |
| Riviera Beach to McPherson (Kansas) | 1,295.89 mi (2,085.54 km) |
| Riviera Beach to Mead Valley (California) | 2,259.70 mi (3,636.63 km) |
| Riviera Beach to Meadow Woods (Florida) | 134.61 mi (216.63 km) |
| Riviera Beach to Meadowbrook (Virginia) | 751.24 mi (1,209.00 km) |
| Riviera Beach to Meadville (Pennsylvania) | 1,027.17 mi (1,653.07 km) |
| Riviera Beach to Mebane (North Carolina) | 644.56 mi (1,037.32 km) |
| Riviera Beach to Mechanicsville (Virginia) | 765.87 mi (1,232.55 km) |
