| Iowa City to Beuvry | 4,244.83 mi (6,831.39 km) |
| Iowa City to Beziers | 4,540.58 mi (7,307.36 km) |
| Iowa City to Bezons | 4,286.04 mi (6,897.71 km) |
| Iowa City to Biarritz | 4,336.68 mi (6,979.22 km) |
| Iowa City to Biganos | 4,317.51 mi (6,948.35 km) |
| Iowa City to Billere | 4,392.27 mi (7,068.68 km) |
| Iowa City to Biot | 4,686.03 mi (7,541.44 km) |
| Iowa City to Biscarrosse | 4,319.16 mi (6,951.01 km) |
| Iowa City to Bischheim | 4,506.87 mi (7,253.10 km) |
| Iowa City to Bischwiller | 4,504.61 mi (7,249.47 km) |
| Iowa City to Blagnac | 4,453.89 mi (7,167.84 km) |
| Iowa City to Blain | 4,182.51 mi (6,731.09 km) |
| Iowa City to Blanquefort | 4,321.66 mi (6,955.03 km) |
| Iowa City to Blois | 4,300.93 mi (6,921.67 km) |
| Iowa City to Bobigny | 4,295.11 mi (6,912.32 km) |
