| Caerphilly to Rodgau | 538.71 mi (866.97 km) |
| Caerphilly to Roding | 710.83 mi (1,143.97 km) |
| Caerphilly to Rodinghausen | 500.25 mi (805.07 km) |
| Caerphilly to Roetgen | 413.21 mi (664.99 km) |
| Caerphilly to Rommerskirchen | 429.34 mi (690.95 km) |
| Caerphilly to Ronnenberg | 549.90 mi (884.98 km) |
| Caerphilly to Rosbach vor der Hohe | 525.79 mi (846.18 km) |
| Caerphilly to Rosdorf | 563.01 mi (906.08 km) |
| Caerphilly to Rosenheim | 730.90 mi (1,176.27 km) |
| Caerphilly to Rosrath | 451.98 mi (727.39 km) |
| Caerphilly to Rossdorf | 536.44 mi (863.31 km) |
| Caerphilly to Rosstal | 636.78 mi (1,024.80 km) |
| Caerphilly to Rostock | 662.31 mi (1,065.89 km) |
| Caerphilly to Rotenburg an der Fulda | 560.12 mi (901.43 km) |
| Caerphilly to Roth | 649.14 mi (1,044.69 km) |
