| Kostinbrod to Kenosha (Wisconsin) | 5,154.37 mi (8,295.15 km) |
| Kostinbrod to Kent (Ohio) | 4,978.10 mi (8,011.48 km) |
| Kostinbrod to Kent (Washington) | 5,856.57 mi (9,425.23 km) |
| Kostinbrod to Kentwood (Michigan) | 5,056.79 mi (8,138.11 km) |
| Kostinbrod to Kerman (California) | 6,475.31 mi (10,421.01 km) |
| Kostinbrod to Kernersville (North Carolina) | 5,160.06 mi (8,304.32 km) |
| Kostinbrod to Kerrville (Texas) | 6,216.56 mi (10,004.58 km) |
| Kostinbrod to Kettering (Maryland) | 4,897.56 mi (7,881.86 km) |
| Kostinbrod to Kettering (Ohio) | 5,154.03 mi (8,294.61 km) |
| Kostinbrod to Kewanee (Illinois) | 5,294.58 mi (8,520.80 km) |
| Kostinbrod to Key Biscayne (Florida) | 5,655.74 mi (9,102.03 km) |
| Kostinbrod to Key Largo (Florida) | 5,694.08 mi (9,163.73 km) |
| Kostinbrod to Key West (Florida) | 5,782.30 mi (9,305.72 km) |
| Kostinbrod to Keystone (Florida) | 5,645.79 mi (9,086.02 km) |
| Kostinbrod to Kihei (Hawaii) | 8,043.65 mi (12,945.01 km) |
