| Difficult Run to Brook Park (Ohio) | 292.73 mi (471.10 km) |
| Difficult Run to Brookfield (Illinois) | 588.03 mi (946.34 km) |
| Difficult Run to Brookfield (Wisconsin) | 630.69 mi (1,015.00 km) |
| Difficult Run to Brookhaven (Georgia) | 520.81 mi (838.17 km) |
| Difficult Run to Brookhaven (Mississippi) | 894.09 mi (1,438.89 km) |
| Difficult Run to Brookings (South Dakota) | 1,068.23 mi (1,719.15 km) |
| Difficult Run to Brooklyn (New York) | 217.10 mi (349.39 km) |
| Difficult Run to Brooklyn (Ohio) | 290.91 mi (468.18 km) |
| Difficult Run to Brooklyn Center (Minnesota) | 921.95 mi (1,483.74 km) |
| Difficult Run to Brooklyn Park (Maryland) | 44.81 mi (72.11 km) |
| Difficult Run to Brooklyn Park (Minnesota) | 924.62 mi (1,488.03 km) |
| Difficult Run to Brookside (Delaware) | 102.02 mi (164.19 km) |
| Difficult Run to Broomall (Pennsylvania) | 129.41 mi (208.27 km) |
| Difficult Run to Broomfield (Colorado) | 1,474.47 mi (2,372.93 km) |
| Difficult Run to Broussard (Louisiana) | 1,026.39 mi (1,651.82 km) |
