| Mason City to Beltsville (Maryland) | 892.19 mi (1,435.84 km) |
| Mason City to Belvedere Park (Georgia) | 808.77 mi (1,301.59 km) |
| Mason City to Belvidere (Illinois) | 228.59 mi (367.87 km) |
| Mason City to Bemidji (Minnesota) | 310.36 mi (499.48 km) |
| Mason City to Benbrook (Texas) | 759.54 mi (1,222.36 km) |
| Mason City to Bend (Oregon) | 1,400.99 mi (2,254.68 km) |
| Mason City to Benicia (California) | 1,550.30 mi (2,494.97 km) |
| Mason City to Bensenville (Illinois) | 279.80 mi (450.30 km) |
| Mason City to Bensville (Maryland) | 900.10 mi (1,448.58 km) |
| Mason City to Benton (Arkansas) | 593.16 mi (954.61 km) |
| Mason City to Bentonville (Arkansas) | 472.59 mi (760.56 km) |
| Mason City to Berea (Kentucky) | 605.59 mi (974.60 km) |
| Mason City to Berea (Ohio) | 592.06 mi (952.82 km) |
| Mason City to Berea (South Carolina) | 810.18 mi (1,303.86 km) |
| Mason City to Bergenfield (New Jersey) | 995.02 mi (1,601.33 km) |
