| Sliven to Kinston (North Carolina) | 5,230.10 mi (8,417.03 km) |
| Sliven to Kirkland (Washington) | 5,903.86 mi (9,501.34 km) |
| Sliven to Kirksville (Missouri) | 5,557.62 mi (8,944.12 km) |
| Sliven to Kirkwood (Missouri) | 5,565.94 mi (8,957.52 km) |
| Sliven to Kiryas Joel (New York) | 4,814.55 mi (7,748.27 km) |
| Sliven to Kissimmee (Florida) | 5,725.72 mi (9,214.66 km) |
| Sliven to Klamath Falls (Oregon) | 6,244.80 mi (10,050.03 km) |
| Sliven to Knightdale (North Carolina) | 5,243.17 mi (8,438.06 km) |
| Sliven to Knik-Fairview (Alaska) | 5,234.30 mi (8,423.79 km) |
| Sliven to Knoxville (Tennessee) | 5,453.78 mi (8,777.00 km) |
| Sliven to Kokomo (Indiana) | 5,314.75 mi (8,553.26 km) |
| Sliven to Kuna (Idaho) | 6,051.45 mi (9,738.88 km) |
| Sliven to Kyle (Texas) | 6,294.13 mi (10,129.42 km) |
| Sliven to La Cañada Flintridge (California) | 6,670.57 mi (10,735.24 km) |
| Sliven to La Crescenta-Montrose (California) | 6,670.03 mi (10,734.37 km) |
