| Sun Prairie to Brown Deer (Wisconsin) | 63.55 mi (102.27 km) |
| Sun Prairie to Brownsburg (Indiana) | 274.42 mi (441.64 km) |
| Sun Prairie to Brownsville (Florida) | 1,302.34 mi (2,095.92 km) |
| Sun Prairie to Brownsville (Texas) | 1,274.53 mi (2,051.16 km) |
| Sun Prairie to Brownwood (Texas) | 954.27 mi (1,535.74 km) |
| Sun Prairie to Brunswick (Georgia) | 934.05 mi (1,503.21 km) |
| Sun Prairie to Brunswick (Ohio) | 402.23 mi (647.33 km) |
| Sun Prairie to Brushy Creek (Texas) | 992.34 mi (1,597.02 km) |
| Sun Prairie to Bryan (Texas) | 949.74 mi (1,528.45 km) |
| Sun Prairie to Bryant (Arkansas) | 617.14 mi (993.19 km) |
| Sun Prairie to Bryn Mawr-Skyway (Washington) | 1,617.69 mi (2,603.42 km) |
| Sun Prairie to Buckeye (Arizona) | 1,429.88 mi (2,301.17 km) |
| Sun Prairie to Buckhall (Virginia) | 687.11 mi (1,105.80 km) |
| Sun Prairie to Bucyrus (Ohio) | 361.05 mi (581.05 km) |
| Sun Prairie to Buda (Texas) | 1,022.41 mi (1,645.42 km) |
