| Clemson to Redondela | 3,919.87 mi (6,308.42 km) |
| Clemson to Reinosa | 4,117.19 mi (6,625.98 km) |
| Clemson to Requena | 4,355.73 mi (7,009.88 km) |
| Clemson to Reus | 4,414.56 mi (7,104.55 km) |
| Clemson to Rianxo | 3,902.09 mi (6,279.81 km) |
| Clemson to Ribadeo | 3,967.38 mi (6,384.88 km) |
| Clemson to Rincon de la Victoria | 4,275.60 mi (6,880.91 km) |
| Clemson to Ripoll | 4,435.44 mi (7,138.15 km) |
| Clemson to Ripollet | 4,454.20 mi (7,168.33 km) |
| Clemson to Rojales | 4,414.30 mi (7,104.13 km) |
| Clemson to Ronda | 4,230.36 mi (6,808.11 km) |
| Clemson to Roquetas de Mar | 4,358.44 mi (7,014.22 km) |
| Clemson to Rosas | 4,479.39 mi (7,208.88 km) |
| Clemson to Rubi | 4,448.43 mi (7,159.06 km) |
| Clemson to Rute | 4,254.65 mi (6,847.20 km) |
