| Smolyan to Kamenz | 836.36 mi (1,345.99 km) |
| Smolyan to Kamp-Lintfort | 1,097.03 mi (1,765.50 km) |
| Smolyan to Kandel | 951.23 mi (1,530.85 km) |
| Smolyan to Kappeln | 1,126.74 mi (1,813.31 km) |
| Smolyan to Karben | 968.06 mi (1,557.94 km) |
| Smolyan to Karlsdorf-Neuthard | 939.07 mi (1,511.29 km) |
| Smolyan to Karlsfeld | 791.66 mi (1,274.05 km) |
| Smolyan to Karlsruhe | 940.67 mi (1,513.86 km) |
| Smolyan to Kassel | 984.31 mi (1,584.09 km) |
| Smolyan to Kaufbeuren | 814.65 mi (1,311.05 km) |
| Smolyan to Kaufering | 810.53 mi (1,304.43 km) |
| Smolyan to Kaufungen | 978.70 mi (1,575.07 km) |
| Smolyan to Kehl | 951.62 mi (1,531.48 km) |
| Smolyan to Kelheim | 802.15 mi (1,290.93 km) |
| Smolyan to Kelkheim (Taunus) | 976.66 mi (1,571.79 km) |
