| Mason City to Blumberg | 4,557.47 mi (7,334.54 km) |
| Mason City to Bobenheim-Roxheim | 4,476.75 mi (7,204.64 km) |
| Mason City to Bobingen | 4,620.65 mi (7,436.21 km) |
| Mason City to Boblingen | 4,538.36 mi (7,303.78 km) |
| Mason City to Bocholt | 4,322.46 mi (6,956.33 km) |
| Mason City to Bochum | 4,357.52 mi (7,012.75 km) |
| Mason City to Bockenem | 4,434.80 mi (7,137.13 km) |
| Mason City to Bockhorn | 4,306.36 mi (6,930.41 km) |
| Mason City to Bogen | 4,656.97 mi (7,494.67 km) |
| Mason City to Bohl-Iggelheim | 4,483.90 mi (7,216.14 km) |
| Mason City to Bohmte | 4,358.79 mi (7,014.80 km) |
| Mason City to Boizenburg | 4,396.68 mi (7,075.77 km) |
| Mason City to Bonen | 4,371.48 mi (7,035.21 km) |
| Mason City to Bonn | 4,384.26 mi (7,055.79 km) |
| Mason City to Bopfingen | 4,578.34 mi (7,368.12 km) |
