| Iowa City to Brighton | 4,128.43 mi (6,644.07 km) |
| Iowa City to Brimington | 3,999.92 mi (6,437.25 km) |
| Iowa City to Brislington | 4,016.78 mi (6,464.39 km) |
| Iowa City to Bristol | 4,014.03 mi (6,459.95 km) |
| Iowa City to Brixham | 4,013.63 mi (6,459.32 km) |
| Iowa City to Brixton | 4,107.19 mi (6,609.88 km) |
| Iowa City to Broadstairs | 4,168.54 mi (6,708.61 km) |
| Iowa City to Broadstone | 4,059.97 mi (6,533.88 km) |
| Iowa City to Broadwater | 4,119.24 mi (6,629.27 km) |
| Iowa City to Brockworth | 4,017.88 mi (6,466.16 km) |
| Iowa City to Bromborough | 3,939.33 mi (6,339.73 km) |
| Iowa City to Bromley | 4,114.10 mi (6,621.00 km) |
| Iowa City to Bromsgrove | 4,005.42 mi (6,446.10 km) |
| Iowa City to Broughton Astley | 4,029.87 mi (6,485.44 km) |
| Iowa City to Broughty Ferry | 3,847.73 mi (6,192.33 km) |
