| Caerphilly to Ratingen | 433.70 mi (697.98 km) |
| Caerphilly to Ratzeburg | 602.64 mi (969.85 km) |
| Caerphilly to Raubling | 731.62 mi (1,177.43 km) |
| Caerphilly to Rauenberg | 547.81 mi (881.61 km) |
| Caerphilly to Raunheim | 520.25 mi (837.26 km) |
| Caerphilly to Ravensburg | 629.52 mi (1,013.12 km) |
| Caerphilly to Recke | 468.25 mi (753.58 km) |
| Caerphilly to Recklinghausen | 445.28 mi (716.61 km) |
| Caerphilly to Regen | 742.54 mi (1,195.01 km) |
| Caerphilly to Regensburg | 696.71 mi (1,121.25 km) |
| Caerphilly to Regenstauf | 696.07 mi (1,120.22 km) |
| Caerphilly to Rehau | 668.72 mi (1,076.20 km) |
| Caerphilly to Rehburg-Loccum | 531.16 mi (854.82 km) |
| Caerphilly to Rehlingen-Siersburg | 460.74 mi (741.50 km) |
| Caerphilly to Reichelsheim | 543.04 mi (873.94 km) |
