| Difficult Run to Brighton | 3,692.47 mi (5,942.45 km) |
| Difficult Run to Brimington | 3,590.17 mi (5,777.82 km) |
| Difficult Run to Brislington | 3,580.17 mi (5,761.73 km) |
| Difficult Run to Bristol | 3,577.52 mi (5,757.46 km) |
| Difficult Run to Brixham | 3,560.99 mi (5,730.86 km) |
| Difficult Run to Brixton | 3,679.03 mi (5,920.83 km) |
| Difficult Run to Broadstairs | 3,744.63 mi (6,026.41 km) |
| Difficult Run to Broadstone | 3,616.89 mi (5,820.82 km) |
| Difficult Run to Broadwater | 3,682.53 mi (5,926.47 km) |
| Difficult Run to Brockworth | 3,587.79 mi (5,773.99 km) |
| Difficult Run to Bromborough | 3,525.67 mi (5,674.01 km) |
| Difficult Run to Bromley | 3,685.80 mi (5,931.73 km) |
| Difficult Run to Bromsgrove | 3,581.75 mi (5,764.28 km) |
| Difficult Run to Broughton Astley | 3,611.32 mi (5,811.85 km) |
| Difficult Run to Broughty Ferry | 3,476.67 mi (5,595.15 km) |
