| Difficult Run to Belper | 3,591.34 mi (5,779.70 km) |
| Difficult Run to Bentley | 3,594.15 mi (5,784.22 km) |
| Difficult Run to Berkhampstead | 3,654.41 mi (5,881.20 km) |
| Difficult Run to Berwick-Upon-Tweed | 3,520.48 mi (5,665.67 km) |
| Difficult Run to Beverley | 3,616.44 mi (5,820.09 km) |
| Difficult Run to Bewdley | 3,570.56 mi (5,746.26 km) |
| Difficult Run to Bexleyheath | 3,689.41 mi (5,937.54 km) |
| Difficult Run to Bicester | 3,627.46 mi (5,837.83 km) |
| Difficult Run to Bickenhill | 3,593.11 mi (5,782.55 km) |
| Difficult Run to Bickley | 3,687.00 mi (5,933.65 km) |
| Difficult Run to Biddulph | 3,561.89 mi (5,732.30 km) |
| Difficult Run to Bideford | 3,519.49 mi (5,664.07 km) |
| Difficult Run to Bidston | 3,520.48 mi (5,665.67 km) |
| Difficult Run to Biggleswade | 3,659.71 mi (5,889.74 km) |
| Difficult Run to Billericay | 3,697.04 mi (5,949.80 km) |
