| Mason City to Beverly Hills (California) | 1,490.30 mi (2,398.40 km) |
| Mason City to Beverly Hills (Florida) | 1,149.84 mi (1,850.48 km) |
| Mason City to Beverly Hills (Michigan) | 506.06 mi (814.43 km) |
| Mason City to Bexley (Ohio) | 574.02 mi (923.80 km) |
| Mason City to Biddeford (Maine) | 1,140.39 mi (1,835.28 km) |
| Mason City to Big Bear City (California) | 1,406.16 mi (2,262.99 km) |
| Mason City to Big Lake (Minnesota) | 153.89 mi (247.66 km) |
| Mason City to Big Spring (Texas) | 878.22 mi (1,413.37 km) |
| Mason City to Billings (Montana) | 777.34 mi (1,251.01 km) |
| Mason City to Biloxi (Mississippi) | 908.49 mi (1,462.07 km) |
| Mason City to Binghamton (New York) | 880.42 mi (1,416.91 km) |
| Mason City to Birmingham (Alabama) | 749.27 mi (1,205.83 km) |
| Mason City to Birmingham (Michigan) | 507.14 mi (816.16 km) |
| Mason City to Bismarck (North Dakota) | 448.02 mi (721.01 km) |
| Mason City to Bithlo (Florida) | 1,211.20 mi (1,949.23 km) |
