| Mountain Ash to Bonita (California) | 5,364.35 mi (8,633.09 km) |
| Mountain Ash to Bonita Springs (Florida) | 4,326.31 mi (6,962.53 km) |
| Mountain Ash to Bonney Lake (Washington) | 4,707.34 mi (7,575.73 km) |
| Mountain Ash to Boone (Iowa) | 4,046.48 mi (6,512.19 km) |
| Mountain Ash to Boone (North Carolina) | 3,841.18 mi (6,181.79 km) |
| Mountain Ash to Borger (Texas) | 4,644.93 mi (7,475.30 km) |
| Mountain Ash to Bossier City (Louisiana) | 4,506.04 mi (7,251.77 km) |
| Mountain Ash to Boston (Massachusetts) | 3,136.91 mi (5,048.37 km) |
| Mountain Ash to Bostonia (California) | 5,352.95 mi (8,614.74 km) |
| Mountain Ash to Bothell (Washington) | 4,675.01 mi (7,523.70 km) |
| Mountain Ash to Bothell East (Washington) | 4,672.63 mi (7,519.87 km) |
| Mountain Ash to Bothell West (Washington) | 4,674.19 mi (7,522.38 km) |
| Mountain Ash to Boulder (Colorado) | 4,559.51 mi (7,337.82 km) |
| Mountain Ash to Boulder City (Nevada) | 5,116.35 mi (8,233.96 km) |
| Mountain Ash to Bound Brook (New Jersey) | 3,352.45 mi (5,395.25 km) |
