| Birsfelden to Karditsa | 910.66 mi (1,465.57 km) |
| Birsfelden to Kastoria | 832.11 mi (1,339.14 km) |
| Birsfelden to Katerini | 893.06 mi (1,437.24 km) |
| Birsfelden to Keratsini | 1,043.80 mi (1,679.83 km) |
| Birsfelden to Kerkyra | 822.20 mi (1,323.20 km) |
| Birsfelden to Kiato | 1,008.31 mi (1,622.72 km) |
| Birsfelden to Kifisia | 1,045.99 mi (1,683.36 km) |
| Birsfelden to Kilkis | 877.96 mi (1,412.95 km) |
| Birsfelden to Komotini | 982.90 mi (1,581.82 km) |
| Birsfelden to Korinthos | 1,018.62 mi (1,639.31 km) |
| Birsfelden to Koropi | 1,057.02 mi (1,701.10 km) |
| Birsfelden to Korydallos | 1,044.29 mi (1,680.63 km) |
| Birsfelden to Kos | 1,240.84 mi (1,996.94 km) |
| Birsfelden to Kozani | 862.52 mi (1,388.10 km) |
| Birsfelden to Lagos | 967.08 mi (1,556.37 km) |
