| Difficult Run to Blumberg | 4,131.78 mi (6,649.46 km) |
| Difficult Run to Bobenheim-Roxheim | 4,072.62 mi (6,554.25 km) |
| Difficult Run to Bobingen | 4,212.77 mi (6,779.80 km) |
| Difficult Run to Boblingen | 4,126.03 mi (6,640.20 km) |
| Difficult Run to Bocholt | 3,939.91 mi (6,340.67 km) |
| Difficult Run to Bochum | 3,973.03 mi (6,393.97 km) |
| Difficult Run to Bockenem | 4,072.03 mi (6,553.30 km) |
| Difficult Run to Bockhorn | 3,952.36 mi (6,360.70 km) |
| Difficult Run to Bogen | 4,267.61 mi (6,868.05 km) |
| Difficult Run to Bohl-Iggelheim | 4,076.72 mi (6,560.84 km) |
| Difficult Run to Bohmte | 3,991.84 mi (6,424.24 km) |
| Difficult Run to Boizenburg | 4,055.27 mi (6,526.33 km) |
| Difficult Run to Bonen | 3,991.25 mi (6,423.30 km) |
| Difficult Run to Bonn | 3,989.02 mi (6,419.70 km) |
| Difficult Run to Bopfingen | 4,175.38 mi (6,719.63 km) |
