| Mason City to Bradford | 3,955.59 mi (6,365.91 km) |
| Mason City to Bradford-on-Avon | 4,023.18 mi (6,474.68 km) |
| Mason City to Bradwell | 4,051.72 mi (6,520.61 km) |
| Mason City to Braintree | 4,106.34 mi (6,608.52 km) |
| Mason City to Bramhall | 3,956.11 mi (6,366.74 km) |
| Mason City to Brandon | 4,088.07 mi (6,579.11 km) |
| Mason City to Braunstone | 4,017.48 mi (6,465.50 km) |
| Mason City to Bredbury | 3,955.76 mi (6,366.18 km) |
| Mason City to Brentwood | 4,107.00 mi (6,609.57 km) |
| Mason City to Bridgnorth | 3,975.30 mi (6,397.62 km) |
| Mason City to Bridgwater | 4,003.33 mi (6,442.73 km) |
| Mason City to Bridlington | 4,000.49 mi (6,438.17 km) |
| Mason City to Bridport | 4,026.04 mi (6,479.29 km) |
| Mason City to Brierley Hill | 3,987.95 mi (6,417.98 km) |
| Mason City to Brighouse | 3,957.24 mi (6,368.56 km) |
