| Difficult Run to Billingham | 3,569.00 mi (5,743.76 km) |
| Difficult Run to Bilston | 3,576.57 mi (5,755.93 km) |
| Difficult Run to Binfield | 3,652.04 mi (5,877.39 km) |
| Difficult Run to Bingham | 3,613.66 mi (5,815.62 km) |
| Difficult Run to Bingley | 3,561.29 mi (5,731.34 km) |
| Difficult Run to Birchington | 3,738.75 mi (6,016.94 km) |
| Difficult Run to Birkenhead | 3,523.19 mi (5,670.03 km) |
| Difficult Run to Birmingham | 3,585.13 mi (5,769.72 km) |
| Difficult Run to Birstall | 3,570.36 mi (5,745.93 km) |
| Difficult Run to Birstall | 3,612.65 mi (5,814.00 km) |
| Difficult Run to Bishop Auckland | 3,552.38 mi (5,717.00 km) |
| Difficult Run to Bishopbriggs | 3,434.42 mi (5,527.17 km) |
| Difficult Run to Bishops Cleeve | 3,589.45 mi (5,776.66 km) |
| Difficult Run to Bishops Stortford | 3,681.66 mi (5,925.05 km) |
| Difficult Run to Bishopstoke | 3,640.07 mi (5,858.13 km) |
