| Iowa City to Brie-Comte-Robert | 4,309.81 mi (6,935.97 km) |
| Iowa City to Brignais | 4,509.78 mi (7,257.78 km) |
| Iowa City to Brignoles | 4,653.82 mi (7,489.60 km) |
| Iowa City to Brive-la-Gaillarde | 4,400.97 mi (7,082.68 km) |
| Iowa City to Bron | 4,513.47 mi (7,263.72 km) |
| Iowa City to Bruay-sur-l'Escaut | 4,281.30 mi (6,890.08 km) |
| Iowa City to Bruges | 4,323.72 mi (6,958.36 km) |
| Iowa City to Brumath | 4,500.50 mi (7,242.85 km) |
| Iowa City to Brunoy | 4,305.51 mi (6,929.06 km) |
| Iowa City to Bruz | 4,163.83 mi (6,701.04 km) |
| Iowa City to Bry-sur-Marne | 4,300.86 mi (6,921.56 km) |
| Iowa City to Bully-les-Mines | 4,249.35 mi (6,838.67 km) |
| Iowa City to Bures-sur-Yvette | 4,292.38 mi (6,907.92 km) |
| Iowa City to Bussy-Saint-Georges | 4,307.56 mi (6,932.34 km) |
| Iowa City to Buxerolles | 4,299.05 mi (6,918.65 km) |
