| Iowa City to Belvedere Marittimo | 5,211.01 mi (8,386.32 km) |
| Iowa City to Benevento | 5,098.44 mi (8,205.14 km) |
| Iowa City to Bergamo | 4,699.73 mi (7,563.49 km) |
| Iowa City to Bernalda | 5,205.31 mi (8,377.14 km) |
| Iowa City to Bertinoro | 4,860.51 mi (7,822.24 km) |
| Iowa City to Besana in Brianza | 4,684.75 mi (7,539.38 km) |
| Iowa City to Besozzo | 4,654.85 mi (7,491.25 km) |
| Iowa City to Biancavilla | 5,262.99 mi (8,469.97 km) |
| Iowa City to Biassono | 4,686.93 mi (7,542.88 km) |
| Iowa City to Bibbiano | 4,774.14 mi (7,683.23 km) |
| Iowa City to Bibbiena | 4,868.15 mi (7,834.54 km) |
| Iowa City to Biella | 4,643.55 mi (7,473.07 km) |
| Iowa City to Bisceglie | 5,159.76 mi (8,303.83 km) |
| Iowa City to Bisignano | 5,232.01 mi (8,420.11 km) |
| Iowa City to Bitetto | 5,178.95 mi (8,334.71 km) |
