| Mason City to Boekel | 4,298.82 mi (6,918.28 km) |
| Mason City to Bolsward | 4,235.98 mi (6,817.15 km) |
| Mason City to Borger | 4,284.49 mi (6,895.21 km) |
| Mason City to Borne | 4,308.17 mi (6,933.33 km) |
| Mason City to Boskoop | 4,244.77 mi (6,831.29 km) |
| Mason City to Boxmeer | 4,306.71 mi (6,930.97 km) |
| Mason City to Boxtel | 4,287.81 mi (6,900.57 km) |
| Mason City to Breda | 4,268.00 mi (6,868.69 km) |
| Mason City to Breukelen | 4,252.90 mi (6,844.38 km) |
| Mason City to Brielle | 4,234.35 mi (6,814.52 km) |
| Mason City to Bronkhorst | 4,297.39 mi (6,915.99 km) |
| Mason City to Brummen | 4,296.24 mi (6,914.14 km) |
| Mason City to Brunssum | 4,335.54 mi (6,977.37 km) |
| Mason City to Bunnik | 4,265.77 mi (6,865.10 km) |
| Mason City to Burgum | 4,246.60 mi (6,834.25 km) |
