| New Port Richey to Mattoon (Illinois) | 840.36 mi (1,352.43 km) |
| New Port Richey to Mauldin (South Carolina) | 452.20 mi (727.75 km) |
| New Port Richey to Maumee (Ohio) | 922.06 mi (1,483.91 km) |
| New Port Richey to Maumelle (Arkansas) | 729.64 mi (1,174.24 km) |
| New Port Richey to Mayagüez (Puerto Rico) | 1,206.35 mi (1,941.43 km) |
| New Port Richey to Mayfield Heights (Ohio) | 919.67 mi (1,480.07 km) |
| New Port Richey to Mays Chapel (Maryland) | 847.18 mi (1,363.41 km) |
| New Port Richey to Maywood (California) | 2,124.46 mi (3,418.98 km) |
| New Port Richey to Maywood (Illinois) | 985.06 mi (1,585.30 km) |
| New Port Richey to McAlester (Oklahoma) | 895.19 mi (1,440.66 km) |
| New Port Richey to McAllen (Texas) | 963.51 mi (1,550.62 km) |
| New Port Richey to McCalla (Alabama) | 432.99 mi (696.82 km) |
| New Port Richey to McComb (Mississippi) | 509.04 mi (819.21 km) |
| New Port Richey to McDonough (Georgia) | 368.72 mi (593.40 km) |
| New Port Richey to McFarland (California) | 2,188.34 mi (3,521.80 km) |
