| New Port Richey to Marrero (Louisiana) | 460.68 mi (741.40 km) |
| New Port Richey to Marshall (Minnesota) | 1,331.28 mi (2,142.49 km) |
| New Port Richey to Marshall (Missouri) | 961.42 mi (1,547.26 km) |
| New Port Richey to Marshall (Texas) | 753.52 mi (1,212.67 km) |
| New Port Richey to Marshalltown (Iowa) | 1,111.16 mi (1,788.24 km) |
| New Port Richey to Marshfield (Wisconsin) | 1,206.22 mi (1,941.22 km) |
| New Port Richey to Martha Lake (Washington) | 2,501.34 mi (4,025.52 km) |
| New Port Richey to Martin (Tennessee) | 663.65 mi (1,068.05 km) |
| New Port Richey to Martinez (California) | 2,357.97 mi (3,794.79 km) |
| New Port Richey to Martinez (Georgia) | 366.24 mi (589.41 km) |
| New Port Richey to Martinsburg (West Virginia) | 820.64 mi (1,320.69 km) |
| New Port Richey to Martinsville (Indiana) | 800.34 mi (1,288.02 km) |
| New Port Richey to Martinsville (New Jersey) | 970.59 mi (1,562.02 km) |
| New Port Richey to Martinsville (Virginia) | 606.04 mi (975.32 km) |
| New Port Richey to Maryland City (Maryland) | 822.93 mi (1,324.37 km) |
