| Wentzville to Mattoon (Illinois) | 141.78 mi (228.18 km) |
| Wentzville to Mauldin (South Carolina) | 549.31 mi (884.03 km) |
| Wentzville to Maumee (Ohio) | 424.96 mi (683.90 km) |
| Wentzville to Maumelle (Arkansas) | 286.63 mi (461.29 km) |
| Wentzville to Mayagüez (Puerto Rico) | 2,013.64 mi (3,240.64 km) |
| Wentzville to Mayfield Heights (Ohio) | 530.58 mi (853.89 km) |
| Wentzville to Mays Chapel (Maryland) | 762.36 mi (1,226.90 km) |
| Wentzville to Maywood (California) | 1,549.34 mi (2,493.42 km) |
| Wentzville to Maywood (Illinois) | 264.85 mi (426.24 km) |
| Wentzville to McAlester (Oklahoma) | 381.68 mi (614.26 km) |
| Wentzville to McAllen (Texas) | 969.45 mi (1,560.18 km) |
| Wentzville to McCalla (Alabama) | 436.95 mi (703.20 km) |
| Wentzville to McComb (Mississippi) | 523.59 mi (842.63 km) |
| Wentzville to McDonough (Georgia) | 527.37 mi (848.72 km) |
| Wentzville to McFarland (California) | 1,569.19 mi (2,525.38 km) |
