| Rhondda to Coldwater (Michigan) | 3,712.45 mi (5,974.61 km) |
| Rhondda to Colesville (Maryland) | 3,518.69 mi (5,662.78 km) |
| Rhondda to College (Alaska) | 4,167.31 mi (6,706.64 km) |
| Rhondda to College Park (Georgia) | 4,078.27 mi (6,563.34 km) |
| Rhondda to College Park (Maryland) | 3,519.33 mi (5,663.81 km) |
| Rhondda to College Station (Texas) | 4,709.45 mi (7,579.13 km) |
| Rhondda to Collegedale (Tennessee) | 4,034.16 mi (6,492.36 km) |
| Rhondda to Colleyville (Texas) | 4,624.88 mi (7,443.03 km) |
| Rhondda to Collierville (Tennessee) | 4,222.40 mi (6,795.30 km) |
| Rhondda to Collinsville (Illinois) | 4,059.55 mi (6,533.22 km) |
| Rhondda to Colonia (New Jersey) | 3,341.88 mi (5,378.23 km) |
| Rhondda to Colonial Heights (Virginia) | 3,616.15 mi (5,819.63 km) |
| Rhondda to Colonial Park (Pennsylvania) | 3,456.87 mi (5,563.29 km) |
| Rhondda to Colorado Springs (Colorado) | 4,603.10 mi (7,407.97 km) |
| Rhondda to Colton (California) | 5,297.82 mi (8,526.02 km) |
