| Llantrisant to Kenosha (Wisconsin) | 3,799.19 mi (6,114.20 km) |
| Llantrisant to Kent (Ohio) | 3,607.44 mi (5,805.62 km) |
| Llantrisant to Kent (Washington) | 4,704.29 mi (7,570.83 km) |
| Llantrisant to Kentwood (Michigan) | 3,697.55 mi (5,950.63 km) |
| Llantrisant to Kerman (California) | 5,241.12 mi (8,434.77 km) |
| Llantrisant to Kernersville (North Carolina) | 3,783.72 mi (6,089.31 km) |
| Llantrisant to Kerrville (Texas) | 4,853.47 mi (7,810.90 km) |
| Llantrisant to Kettering (Maryland) | 3,521.29 mi (5,666.97 km) |
| Llantrisant to Kettering (Ohio) | 3,784.18 mi (6,090.05 km) |
| Llantrisant to Kewanee (Illinois) | 3,939.74 mi (6,340.40 km) |
| Llantrisant to Key Biscayne (Florida) | 4,292.42 mi (6,907.99 km) |
| Llantrisant to Key Largo (Florida) | 4,331.61 mi (6,971.06 km) |
| Llantrisant to Key West (Florida) | 4,418.12 mi (7,110.27 km) |
| Llantrisant to Keystone (Florida) | 4,273.57 mi (6,877.65 km) |
| Llantrisant to Kihei (Hawaii) | 7,181.34 mi (11,557.25 km) |
