| Difficult Run to Ramsbottom | 3,546.07 mi (5,706.85 km) |
| Difficult Run to Ramsgate | 3,744.22 mi (6,025.74 km) |
| Difficult Run to Raunds | 3,642.85 mi (5,862.61 km) |
| Difficult Run to Rawmarsh | 3,587.98 mi (5,774.30 km) |
| Difficult Run to Rawtenstall | 3,546.15 mi (5,706.98 km) |
| Difficult Run to Rayleigh | 3,705.54 mi (5,963.49 km) |
| Difficult Run to Raynes Park | 3,675.55 mi (5,915.23 km) |
| Difficult Run to Reading | 3,644.15 mi (5,864.70 km) |
| Difficult Run to Redcar | 3,576.60 mi (5,755.98 km) |
| Difficult Run to Reddish | 3,556.16 mi (5,723.09 km) |
| Difficult Run to Redditch | 3,587.50 mi (5,773.52 km) |
| Difficult Run to Redhill | 3,681.63 mi (5,925.00 km) |
| Difficult Run to Redruth | 3,492.10 mi (5,620.00 km) |
| Difficult Run to Reigate | 3,680.31 mi (5,922.89 km) |
| Difficult Run to Renfrew | 3,428.62 mi (5,517.82 km) |
