| Difficult Run to Beacon (New York) | 253.27 mi (407.60 km) |
| Difficult Run to Bear (Delaware) | 101.99 mi (164.14 km) |
| Difficult Run to Beatrice (Nebraska) | 1,035.16 mi (1,665.93 km) |
| Difficult Run to Beaufort (South Carolina) | 483.65 mi (778.36 km) |
| Difficult Run to Beaumont (California) | 2,213.05 mi (3,561.57 km) |
| Difficult Run to Beaumont (Texas) | 1,131.22 mi (1,820.52 km) |
| Difficult Run to Beaver Dam (Wisconsin) | 674.55 mi (1,085.58 km) |
| Difficult Run to Beavercreek (Ohio) | 363.42 mi (584.87 km) |
| Difficult Run to Beaverton (Oregon) | 2,339.38 mi (3,764.87 km) |
| Difficult Run to Beckley (West Virginia) | 221.69 mi (356.77 km) |
| Difficult Run to Bedford (Indiana) | 491.53 mi (791.05 km) |
| Difficult Run to Bedford (Ohio) | 280.21 mi (450.95 km) |
| Difficult Run to Bedford (Texas) | 1,181.20 mi (1,900.96 km) |
| Difficult Run to Bedford Heights (Ohio) | 279.44 mi (449.71 km) |
| Difficult Run to Beech Grove (Indiana) | 470.43 mi (757.08 km) |
