| Difficult Run to Beverly Hills (California) | 2,285.36 mi (3,677.93 km) |
| Difficult Run to Beverly Hills (Florida) | 749.06 mi (1,205.50 km) |
| Difficult Run to Beverly Hills (Michigan) | 397.19 mi (639.22 km) |
| Difficult Run to Bexley (Ohio) | 307.02 mi (494.11 km) |
| Difficult Run to Biddeford (Maine) | 477.29 mi (768.13 km) |
| Difficult Run to Big Bear City (California) | 2,194.74 mi (3,532.10 km) |
| Difficult Run to Big Lake (Minnesota) | 948.33 mi (1,526.18 km) |
| Difficult Run to Big Spring (Texas) | 1,427.19 mi (2,296.83 km) |
| Difficult Run to Billings (Montana) | 1,651.18 mi (2,657.32 km) |
| Difficult Run to Biloxi (Mississippi) | 879.77 mi (1,415.85 km) |
| Difficult Run to Binghamton (New York) | 233.62 mi (375.98 km) |
| Difficult Run to Birmingham (Alabama) | 643.90 mi (1,036.26 km) |
| Difficult Run to Birmingham (Michigan) | 397.09 mi (639.06 km) |
| Difficult Run to Bismarck (North Dakota) | 1,299.64 mi (2,091.57 km) |
| Difficult Run to Bithlo (Florida) | 745.99 mi (1,200.56 km) |
