| Rhondda to Columbia (Illinois) | 4,078.17 mi (6,563.18 km) |
| Rhondda to Columbia (Maryland) | 3,507.20 mi (5,644.30 km) |
| Rhondda to Columbia (Missouri) | 4,136.75 mi (6,657.46 km) |
| Rhondda to Columbia (Pennsylvania) | 3,455.58 mi (5,561.21 km) |
| Rhondda to Columbia (South Carolina) | 3,911.77 mi (6,295.39 km) |
| Rhondda to Columbia (Tennessee) | 4,087.93 mi (6,578.89 km) |
| Rhondda to Columbia Heights (Minnesota) | 3,884.22 mi (6,251.05 km) |
| Rhondda to Columbine (Colorado) | 4,576.84 mi (7,365.71 km) |
| Rhondda to Columbus (Georgia) | 4,149.95 mi (6,678.69 km) |
| Rhondda to Columbus (Indiana) | 3,873.40 mi (6,233.64 km) |
| Rhondda to Columbus (Mississippi) | 4,245.72 mi (6,832.83 km) |
| Rhondda to Columbus (Nebraska) | 4,205.78 mi (6,768.55 km) |
| Rhondda to Columbus (Ohio) | 3,720.88 mi (5,988.18 km) |
| Rhondda to Commack (New York) | 3,288.66 mi (5,292.59 km) |
| Rhondda to Commerce (California) | 5,328.54 mi (8,575.46 km) |
