| Webster Groves to Mineola (New York) | 900.02 mi (1,448.43 km) |
| Webster Groves to Mineral Wells (Texas) | 588.39 mi (946.92 km) |
| Webster Groves to Minneapolis (Minnesota) | 465.39 mi (748.97 km) |
| Webster Groves to Minnehaha (Washington) | 1,711.15 mi (2,753.83 km) |
| Webster Groves to Minneola (Florida) | 848.60 mi (1,365.68 km) |
| Webster Groves to Minnetonka (Minnesota) | 466.64 mi (750.99 km) |
| Webster Groves to Minooka (Illinois) | 226.30 mi (364.19 km) |
| Webster Groves to Minot (North Dakota) | 861.50 mi (1,386.45 km) |
| Webster Groves to Mint Hill (North Carolina) | 585.19 mi (941.78 km) |
| Webster Groves to Miramar (Florida) | 1,047.98 mi (1,686.56 km) |
| Webster Groves to Mishawaka (Indiana) | 307.26 mi (494.48 km) |
| Webster Groves to Mission (Texas) | 972.77 mi (1,565.53 km) |
| Webster Groves to Mission Bend (Texas) | 685.01 mi (1,102.42 km) |
| Webster Groves to Mission Viejo (California) | 1,556.29 mi (2,504.60 km) |
| Webster Groves to Missoula (Montana) | 1,323.73 mi (2,130.34 km) |
