| Sun Prairie to Blue Island (Illinois) | 131.86 mi (212.21 km) |
| Sun Prairie to Blue Springs (Missouri) | 389.43 mi (626.72 km) |
| Sun Prairie to Bluffdale (Utah) | 1,179.93 mi (1,898.91 km) |
| Sun Prairie to Bluffton (Indiana) | 268.27 mi (431.75 km) |
| Sun Prairie to Bluffton (South Carolina) | 882.39 mi (1,420.07 km) |
| Sun Prairie to Blythe (California) | 1,516.79 mi (2,441.04 km) |
| Sun Prairie to Blytheville (Arkansas) | 502.21 mi (808.24 km) |
| Sun Prairie to Boca Raton (Florida) | 1,269.64 mi (2,043.29 km) |
| Sun Prairie to Boerne (Texas) | 1,063.69 mi (1,711.85 km) |
| Sun Prairie to Bogalusa (Louisiana) | 857.54 mi (1,380.07 km) |
| Sun Prairie to Boiling Springs (South Carolina) | 683.15 mi (1,099.42 km) |
| Sun Prairie to Boise (Idaho) | 1,349.68 mi (2,172.10 km) |
| Sun Prairie to Bolingbrook (Illinois) | 118.22 mi (190.26 km) |
| Sun Prairie to Bolivar (Missouri) | 443.56 mi (713.83 km) |
| Sun Prairie to Bon Air (Virginia) | 727.25 mi (1,170.39 km) |
