| Mountain Ash to Barberton (Ohio) | 3,619.67 mi (5,825.30 km) |
| Mountain Ash to Bardstown (Kentucky) | 3,919.65 mi (6,308.07 km) |
| Mountain Ash to Barrington (Illinois) | 3,824.16 mi (6,154.40 km) |
| Mountain Ash to Barstow (California) | 5,241.43 mi (8,435.27 km) |
| Mountain Ash to Bartlesville (Oklahoma) | 4,383.73 mi (7,054.93 km) |
| Mountain Ash to Bartlett (Illinois) | 3,835.02 mi (6,171.87 km) |
| Mountain Ash to Bartlett (Tennessee) | 4,218.01 mi (6,788.23 km) |
| Mountain Ash to Bartow (Florida) | 4,251.00 mi (6,841.32 km) |
| Mountain Ash to Batavia (Illinois) | 3,845.09 mi (6,188.07 km) |
| Mountain Ash to Batavia (New York) | 3,396.60 mi (5,466.30 km) |
| Mountain Ash to Batesville (Arkansas) | 4,263.38 mi (6,861.25 km) |
| Mountain Ash to Baton Rouge (Louisiana) | 4,509.09 mi (7,256.69 km) |
| Mountain Ash to Battle Creek (Michigan) | 3,705.34 mi (5,963.17 km) |
| Mountain Ash to Battle Ground (Washington) | 4,796.42 mi (7,719.10 km) |
| Mountain Ash to Bay City (Michigan) | 3,596.13 mi (5,787.42 km) |
