| New Port Richey to McHenry (Illinois) | 1,022.55 mi (1,645.64 km) |
| New Port Richey to McKeesport (Pennsylvania) | 851.48 mi (1,370.33 km) |
| New Port Richey to McKinleyville (California) | 2,484.08 mi (3,997.75 km) |
| New Port Richey to McKinney (Texas) | 895.51 mi (1,441.19 km) |
| New Port Richey to McLean (Virginia) | 804.09 mi (1,294.05 km) |
| New Port Richey to McMinnville (Oregon) | 2,494.39 mi (4,014.34 km) |
| New Port Richey to McMinnville (Tennessee) | 544.41 mi (876.14 km) |
| New Port Richey to McNair (Virginia) | 799.75 mi (1,287.07 km) |
| New Port Richey to McPherson (Kansas) | 1,108.23 mi (1,783.53 km) |
| New Port Richey to Mead Valley (California) | 2,072.51 mi (3,335.38 km) |
| New Port Richey to Meadow Woods (Florida) | 83.79 mi (134.84 km) |
| New Port Richey to Meadowbrook (Virginia) | 703.40 mi (1,132.01 km) |
| New Port Richey to Meadville (Pennsylvania) | 937.15 mi (1,508.20 km) |
| New Port Richey to Mebane (North Carolina) | 577.69 mi (929.71 km) |
| New Port Richey to Mechanicsville (Virginia) | 718.41 mi (1,156.17 km) |
