| Iowa City to Bicaz | 5,223.19 mi (8,405.91 km) |
| Iowa City to Bistrita | 5,160.36 mi (8,304.80 km) |
| Iowa City to Blaj | 5,188.46 mi (8,350.02 km) |
| Iowa City to Bocsa | 5,152.78 mi (8,292.59 km) |
| Iowa City to Boldesti-Scaeni | 5,316.27 mi (8,555.71 km) |
| Iowa City to Bolintin Vale | 5,336.67 mi (8,588.54 km) |
| Iowa City to Borsa | 5,139.78 mi (8,271.68 km) |
| Iowa City to Botosani | 5,199.34 mi (8,367.53 km) |
| Iowa City to Brad | 5,152.92 mi (8,292.83 km) |
| Iowa City to Bragadiru | 5,347.85 mi (8,606.53 km) |
| Iowa City to Braila | 5,367.24 mi (8,637.74 km) |
| Iowa City to Brasov | 5,270.41 mi (8,481.91 km) |
| Iowa City to Breaza | 5,296.10 mi (8,523.24 km) |
| Iowa City to Bucharest | 5,349.04 mi (8,608.44 km) |
| Iowa City to Buftea | 5,336.91 mi (8,588.93 km) |
