| Merthyr Tudful to Kilgore (Texas) | 4,558.12 mi (7,335.58 km) |
| Merthyr Tudful to Killeen (Texas) | 4,738.97 mi (7,626.63 km) |
| Merthyr Tudful to King City (California) | 5,294.33 mi (8,520.40 km) |
| Merthyr Tudful to King of Prussia (Pennsylvania) | 3,406.35 mi (5,481.98 km) |
| Merthyr Tudful to Kingman (Arizona) | 5,117.27 mi (8,235.45 km) |
| Merthyr Tudful to Kings Mountain (North Carolina) | 3,872.91 mi (6,232.84 km) |
| Merthyr Tudful to Kings Park (New York) | 3,284.52 mi (5,285.93 km) |
| Merthyr Tudful to Kings Park West (Virginia) | 3,541.44 mi (5,699.40 km) |
| Merthyr Tudful to Kingsburg (California) | 5,227.09 mi (8,412.18 km) |
| Merthyr Tudful to Kingsland (Georgia) | 4,100.92 mi (6,599.79 km) |
| Merthyr Tudful to Kingsport (Tennessee) | 3,861.33 mi (6,214.22 km) |
| Merthyr Tudful to Kingston (New York) | 3,271.23 mi (5,264.54 km) |
| Merthyr Tudful to Kingston (Pennsylvania) | 3,376.52 mi (5,433.98 km) |
| Merthyr Tudful to Kingstowne (Virginia) | 3,537.56 mi (5,693.16 km) |
| Merthyr Tudful to Kingsville (Texas) | 4,929.86 mi (7,933.85 km) |
