| Kostinbrod to Kinston (North Carolina) | 5,094.20 mi (8,198.32 km) |
| Kostinbrod to Kirkland (Washington) | 5,837.08 mi (9,393.87 km) |
| Kostinbrod to Kirksville (Missouri) | 5,441.88 mi (8,757.86 km) |
| Kostinbrod to Kirkwood (Missouri) | 5,445.86 mi (8,764.26 km) |
| Kostinbrod to Kiryas Joel (New York) | 4,683.13 mi (7,536.77 km) |
| Kostinbrod to Kissimmee (Florida) | 5,585.88 mi (8,989.60 km) |
| Kostinbrod to Klamath Falls (Oregon) | 6,171.84 mi (9,932.62 km) |
| Kostinbrod to Knightdale (North Carolina) | 5,108.57 mi (8,221.46 km) |
| Kostinbrod to Knik-Fairview (Alaska) | 5,217.50 mi (8,396.75 km) |
| Kostinbrod to Knoxville (Tennessee) | 5,324.15 mi (8,568.39 km) |
| Kostinbrod to Kokomo (Indiana) | 5,192.67 mi (8,356.80 km) |
| Kostinbrod to Kuna (Idaho) | 5,971.22 mi (9,609.76 km) |
| Kostinbrod to Kyle (Texas) | 6,172.53 mi (9,933.73 km) |
| Kostinbrod to La Cañada Flintridge (California) | 6,583.43 mi (10,595.01 km) |
| Kostinbrod to La Crescenta-Montrose (California) | 6,582.97 mi (10,594.27 km) |
