| Mason City to Belper | 3,992.15 mi (6,424.75 km) |
| Mason City to Bentley | 3,985.68 mi (6,414.33 km) |
| Mason City to Berkhampstead | 4,070.44 mi (6,550.75 km) |
| Mason City to Berwick-Upon-Tweed | 3,880.38 mi (6,244.87 km) |
| Mason City to Beverley | 4,000.63 mi (6,438.39 km) |
| Mason City to Bewdley | 3,984.64 mi (6,412.66 km) |
| Mason City to Bexleyheath | 4,106.86 mi (6,609.35 km) |
| Mason City to Bicester | 4,043.91 mi (6,508.04 km) |
| Mason City to Bickenhill | 4,003.86 mi (6,443.59 km) |
| Mason City to Bickley | 4,105.69 mi (6,607.47 km) |
| Mason City to Biddulph | 3,964.06 mi (6,379.54 km) |
| Mason City to Bideford | 3,961.63 mi (6,375.63 km) |
| Mason City to Bidston | 3,921.81 mi (6,311.54 km) |
| Mason City to Biggleswade | 4,069.67 mi (6,549.49 km) |
| Mason City to Billericay | 4,110.81 mi (6,615.71 km) |
