| Difficult Run to Bastogne | 3,953.26 mi (6,362.15 km) |
| Difficult Run to Beauraing | 3,919.25 mi (6,307.43 km) |
| Difficult Run to Beernem | 3,826.91 mi (6,158.81 km) |
| Difficult Run to Beerse | 3,883.93 mi (6,250.58 km) |
| Difficult Run to Beersel | 3,875.71 mi (6,237.36 km) |
| Difficult Run to Begijnendijk | 3,888.36 mi (6,257.71 km) |
| Difficult Run to Beloeil | 3,857.53 mi (6,208.10 km) |
| Difficult Run to Berchem | 3,869.29 mi (6,227.02 km) |
| Difficult Run to Beringen | 3,905.35 mi (6,285.05 km) |
| Difficult Run to Berlaar | 3,880.39 mi (6,244.88 km) |
| Difficult Run to Berlare | 3,856.62 mi (6,206.63 km) |
| Difficult Run to Bernissart | 3,856.09 mi (6,205.77 km) |
| Difficult Run to Bertem | 3,885.94 mi (6,253.82 km) |
| Difficult Run to Bertrix | 3,938.24 mi (6,337.99 km) |
| Difficult Run to Beveren | 3,862.15 mi (6,215.54 km) |
