| Difficult Run to Racale | 4,816.53 mi (7,751.46 km) |
| Difficult Run to Racconigi | 4,190.69 mi (6,744.26 km) |
| Difficult Run to Raffadali | 4,709.64 mi (7,579.44 km) |
| Difficult Run to Ragusa | 4,782.90 mi (7,697.34 km) |
| Difficult Run to Ramacca | 4,763.96 mi (7,666.85 km) |
| Difficult Run to Randazzo | 4,756.28 mi (7,654.49 km) |
| Difficult Run to Rapallo | 4,271.63 mi (6,874.53 km) |
| Difficult Run to Ravanusa | 4,734.86 mi (7,620.02 km) |
| Difficult Run to Ravenna | 4,397.66 mi (7,077.36 km) |
| Difficult Run to Recanati | 4,491.02 mi (7,227.60 km) |
| Difficult Run to Recco | 4,267.46 mi (6,867.81 km) |
| Difficult Run to Reggello | 4,393.92 mi (7,071.34 km) |
| Difficult Run to Reggio di Calabria | 4,779.17 mi (7,691.33 km) |
| Difficult Run to Reggio Emilia | 4,320.71 mi (6,953.51 km) |
| Difficult Run to Reggiolo | 4,321.38 mi (6,954.60 km) |
