| Difficult Run to Bathgate | 3,456.44 mi (5,562.61 km) |
| Difficult Run to Batley | 3,571.61 mi (5,747.94 km) |
| Difficult Run to Beaconsfield | 3,654.81 mi (5,881.84 km) |
| Difficult Run to Bearsden | 3,430.12 mi (5,520.24 km) |
| Difficult Run to Bebington | 3,524.42 mi (5,672.00 km) |
| Difficult Run to Beccles | 3,724.37 mi (5,993.80 km) |
| Difficult Run to Beckenham | 3,684.03 mi (5,928.87 km) |
| Difficult Run to Bedford | 3,650.01 mi (5,874.12 km) |
| Difficult Run to Bedlington | 3,547.47 mi (5,709.10 km) |
| Difficult Run to Bedwas | 3,549.69 mi (5,712.68 km) |
| Difficult Run to Bedworth | 3,602.37 mi (5,797.45 km) |
| Difficult Run to Beeston | 3,603.73 mi (5,799.64 km) |
| Difficult Run to Belfast | 3,388.29 mi (5,452.93 km) |
| Difficult Run to Belgrave | 3,612.75 mi (5,814.16 km) |
| Difficult Run to Bellshill | 3,443.29 mi (5,541.44 km) |
