| Iowa City to Bispham | 3,920.89 mi (6,310.06 km) |
| Iowa City to Blackburn | 3,944.48 mi (6,348.03 km) |
| Iowa City to Blackpool | 3,921.73 mi (6,311.41 km) |
| Iowa City to Blairgowrie | 3,827.85 mi (6,160.32 km) |
| Iowa City to Blandford Forum | 4,050.28 mi (6,518.29 km) |
| Iowa City to Blaydon | 3,933.68 mi (6,330.65 km) |
| Iowa City to Bletchley | 4,066.04 mi (6,543.65 km) |
| Iowa City to Bloxwich | 3,998.34 mi (6,434.71 km) |
| Iowa City to Blunsdon Saint Andrew | 4,039.35 mi (6,500.70 km) |
| Iowa City to Blyth | 3,935.81 mi (6,334.08 km) |
| Iowa City to Bo'ness | 3,835.28 mi (6,172.29 km) |
| Iowa City to Bodmin | 3,964.60 mi (6,380.40 km) |
| Iowa City to Bognor Regis | 4,109.38 mi (6,613.41 km) |
| Iowa City to Bolsover | 4,004.58 mi (6,444.74 km) |
| Iowa City to Bolton | 3,951.78 mi (6,359.78 km) |
