| Difficult Run to Rhondda | 3,540.54 mi (5,697.94 km) |
| Difficult Run to Rhosllanerchrugog | 3,528.73 mi (5,678.93 km) |
| Difficult Run to Rhyl | 3,505.96 mi (5,642.29 km) |
| Difficult Run to Rhymney | 3,543.26 mi (5,702.33 km) |
| Difficult Run to Richmond | 3,671.58 mi (5,908.84 km) |
| Difficult Run to Rickmansworth | 3,660.87 mi (5,891.60 km) |
| Difficult Run to Ripley | 3,593.63 mi (5,783.38 km) |
| Difficult Run to Ripon | 3,567.99 mi (5,742.12 km) |
| Difficult Run to Risca | 3,554.12 mi (5,719.80 km) |
| Difficult Run to Rochdale | 3,552.87 mi (5,717.79 km) |
| Difficult Run to Rochester | 3,706.05 mi (5,964.31 km) |
| Difficult Run to Rock Ferry | 3,523.80 mi (5,671.00 km) |
| Difficult Run to Rogerstone | 3,556.00 mi (5,722.83 km) |
| Difficult Run to Romford | 3,688.50 mi (5,936.07 km) |
| Difficult Run to Romsey | 3,632.64 mi (5,846.17 km) |
