| Mason City to Mendota Heights (Minnesota) | 119.76 mi (192.74 km) |
| Mason City to Menifee (California) | 1,446.44 mi (2,327.82 km) |
| Mason City to Menlo Park (California) | 1,567.31 mi (2,522.35 km) |
| Mason City to Menomonee Falls (Wisconsin) | 255.89 mi (411.81 km) |
| Mason City to Menomonie (Wisconsin) | 136.30 mi (219.36 km) |
| Mason City to Mentor (Ohio) | 612.92 mi (986.40 km) |
| Mason City to Mequon (Wisconsin) | 262.76 mi (422.88 km) |
| Mason City to Merced (California) | 1,487.12 mi (2,393.28 km) |
| Mason City to Mercedes (Texas) | 1,203.90 mi (1,937.49 km) |
| Mason City to Mercer Island (Washington) | 1,433.26 mi (2,306.62 km) |
| Mason City to Mercerville (New Jersey) | 973.73 mi (1,567.06 km) |
| Mason City to Meriden (Connecticut) | 1,045.38 mi (1,682.37 km) |
| Mason City to Meridian (Idaho) | 1,161.60 mi (1,869.42 km) |
| Mason City to Meridian (Mississippi) | 783.13 mi (1,260.33 km) |
| Mason City to Merriam (Kansas) | 295.76 mi (475.98 km) |
