| Madison to Brown Deer (Wisconsin) | 71.79 mi (115.53 km) |
| Madison to Brownsburg (Indiana) | 273.21 mi (439.70 km) |
| Madison to Brownsville (Florida) | 1,299.60 mi (2,091.50 km) |
| Madison to Brownsville (Texas) | 1,265.00 mi (2,035.82 km) |
| Madison to Brownwood (Texas) | 943.97 mi (1,519.18 km) |
| Madison to Brunswick (Georgia) | 932.01 mi (1,499.92 km) |
| Madison to Brunswick (Ohio) | 407.89 mi (656.43 km) |
| Madison to Brushy Creek (Texas) | 982.34 mi (1,580.92 km) |
| Madison to Bryan (Texas) | 940.00 mi (1,512.78 km) |
| Madison to Bryant (Arkansas) | 608.18 mi (978.77 km) |
| Madison to Bryn Mawr-Skyway (Washington) | 1,613.00 mi (2,595.87 km) |
| Madison to Buckeye (Arizona) | 1,420.06 mi (2,285.37 km) |
| Madison to Buckhall (Virginia) | 691.81 mi (1,113.37 km) |
| Madison to Bucyrus (Ohio) | 365.43 mi (588.11 km) |
| Madison to Buda (Texas) | 1,012.44 mi (1,629.36 km) |
