| Westerville to Mattoon (Illinois) | 292.23 mi (470.29 km) |
| Westerville to Mauldin (South Carolina) | 370.65 mi (596.50 km) |
| Westerville to Maumee (Ohio) | 107.15 mi (172.44 km) |
| Westerville to Maumelle (Arkansas) | 634.03 mi (1,020.37 km) |
| Westerville to Mayagüez (Puerto Rico) | 1,782.77 mi (2,869.09 km) |
| Westerville to Mayfield Heights (Ohio) | 123.11 mi (198.12 km) |
| Westerville to Mays Chapel (Maryland) | 336.22 mi (541.10 km) |
| Westerville to Maywood (California) | 1,976.64 mi (3,181.09 km) |
| Westerville to Maywood (Illinois) | 283.87 mi (456.85 km) |
| Westerville to McAlester (Oklahoma) | 789.49 mi (1,270.56 km) |
| Westerville to McAllen (Texas) | 1,302.89 mi (2,096.80 km) |
| Westerville to McCalla (Alabama) | 523.25 mi (842.09 km) |
| Westerville to McComb (Mississippi) | 744.97 mi (1,198.92 km) |
| Westerville to McDonough (Georgia) | 466.82 mi (751.27 km) |
| Westerville to McFarland (California) | 1,989.81 mi (3,202.28 km) |
