| Iowa City to Borgosatollo | 4,730.77 mi (7,613.43 km) |
| Iowa City to Borgosesia | 4,645.03 mi (7,475.45 km) |
| Iowa City to Boscoreale | 5,103.57 mi (8,213.41 km) |
| Iowa City to Boscotrecase | 5,102.16 mi (8,211.14 km) |
| Iowa City to Botticino Sera | 4,728.07 mi (7,609.09 km) |
| Iowa City to Bovalino Marina | 5,291.66 mi (8,516.11 km) |
| Iowa City to Boves | 4,674.69 mi (7,523.19 km) |
| Iowa City to Boville Ernica | 5,023.60 mi (8,084.71 km) |
| Iowa City to Bovisio Masciago | 4,683.16 mi (7,536.81 km) |
| Iowa City to Bovolone | 4,774.45 mi (7,683.73 km) |
| Iowa City to Bra | 4,671.19 mi (7,517.56 km) |
| Iowa City to Bracciano | 4,953.21 mi (7,971.42 km) |
| Iowa City to Brandizzo | 4,650.88 mi (7,484.88 km) |
| Iowa City to Breganze | 4,771.35 mi (7,678.75 km) |
| Iowa City to Brembate | 4,699.17 mi (7,562.58 km) |
