| Rhondda to Butzbach | 530.60 mi (853.92 km) |
| Rhondda to Buxtehude | 565.12 mi (909.47 km) |
| Rhondda to Cadolzburg | 643.80 mi (1,036.09 km) |
| Rhondda to Calbe | 648.88 mi (1,044.27 km) |
| Rhondda to Calw | 573.03 mi (922.20 km) |
| Rhondda to Castrop-Rauxel | 460.46 mi (741.04 km) |
| Rhondda to Celle | 576.08 mi (927.12 km) |
| Rhondda to Cham | 724.95 mi (1,166.69 km) |
| Rhondda to Chemnitz | 707.38 mi (1,138.41 km) |
| Rhondda to Clausthal-Zellerfeld | 588.08 mi (946.42 km) |
| Rhondda to Cloppenburg | 492.14 mi (792.03 km) |
| Rhondda to Coburg | 632.08 mi (1,017.23 km) |
| Rhondda to Coesfeld | 452.60 mi (728.39 km) |
| Rhondda to Cologne | 450.30 mi (724.68 km) |
| Rhondda to Coswig | 732.34 mi (1,178.59 km) |
