| South Houston to Karditsa | 6,189.19 mi (9,960.53 km) |
| South Houston to Kastoria | 6,112.33 mi (9,836.84 km) |
| South Houston to Katerini | 6,173.48 mi (9,935.26 km) |
| South Houston to Keratsini | 6,321.58 mi (10,173.60 km) |
| South Houston to Kerkyra | 6,095.07 mi (9,809.07 km) |
| South Houston to Kiato | 6,283.54 mi (10,112.37 km) |
| South Houston to Kifisia | 6,324.63 mi (10,178.51 km) |
| South Houston to Kilkis | 6,156.53 mi (9,907.98 km) |
| South Houston to Komotini | 6,251.90 mi (10,061.45 km) |
| South Houston to Korinthos | 6,294.14 mi (10,129.44 km) |
| South Houston to Koropi | 6,335.21 mi (10,195.53 km) |
| South Houston to Korydallos | 6,322.22 mi (10,174.63 km) |
| South Houston to Kos | 6,521.30 mi (10,495.01 km) |
| South Houston to Kozani | 6,142.86 mi (9,885.98 km) |
| South Houston to Lagos | 6,238.14 mi (10,039.31 km) |
