| Mill Valley to Brown Deer (Wisconsin) | 1,837.47 mi (2,957.11 km) |
| Mill Valley to Brownsburg (Indiana) | 1,936.42 mi (3,116.36 km) |
| Mill Valley to Brownsville (Florida) | 2,593.88 mi (4,174.45 km) |
| Mill Valley to Brownsville (Texas) | 1,677.21 mi (2,699.21 km) |
| Mill Valley to Brownwood (Texas) | 1,399.22 mi (2,251.83 km) |
| Mill Valley to Brunswick (Georgia) | 2,364.39 mi (3,805.13 km) |
| Mill Valley to Brunswick (Ohio) | 2,161.00 mi (3,477.79 km) |
| Mill Valley to Brushy Creek (Texas) | 1,500.99 mi (2,415.61 km) |
| Mill Valley to Bryan (Texas) | 1,568.87 mi (2,524.85 km) |
| Mill Valley to Bryant (Arkansas) | 1,682.20 mi (2,707.23 km) |
| Mill Valley to Bryn Mawr-Skyway (Washington) | 662.52 mi (1,066.23 km) |
| Mill Valley to Buckeye (Arizona) | 635.43 mi (1,022.63 km) |
| Mill Valley to Buckhall (Virginia) | 2,420.07 mi (3,894.73 km) |
| Mill Valley to Bucyrus (Ohio) | 2,105.49 mi (3,388.45 km) |
| Mill Valley to Buda (Texas) | 1,508.90 mi (2,428.34 km) |
