| Rhondda to Kenosha (Wisconsin) | 3,795.28 mi (6,107.91 km) |
| Rhondda to Kent (Ohio) | 3,603.89 mi (5,799.91 km) |
| Rhondda to Kent (Washington) | 4,699.20 mi (7,562.63 km) |
| Rhondda to Kentwood (Michigan) | 3,693.71 mi (5,944.45 km) |
| Rhondda to Kerman (California) | 5,236.33 mi (8,427.07 km) |
| Rhondda to Kernersville (North Carolina) | 3,780.58 mi (6,084.26 km) |
| Rhondda to Kerrville (Texas) | 4,849.74 mi (7,804.91 km) |
| Rhondda to Kettering (Maryland) | 3,518.12 mi (5,661.86 km) |
| Rhondda to Kettering (Ohio) | 3,780.61 mi (6,084.30 km) |
| Rhondda to Kewanee (Illinois) | 3,935.83 mi (6,334.10 km) |
| Rhondda to Key Biscayne (Florida) | 4,289.99 mi (6,904.07 km) |
| Rhondda to Key Largo (Florida) | 4,329.20 mi (6,967.18 km) |
| Rhondda to Key West (Florida) | 4,415.66 mi (7,106.31 km) |
| Rhondda to Keystone (Florida) | 4,270.83 mi (6,873.24 km) |
| Rhondda to Kihei (Hawaii) | 7,175.95 mi (11,548.57 km) |
