| Round Rock to Karditsa | 6,244.38 mi (10,049.36 km) |
| Round Rock to Kastoria | 6,166.09 mi (9,923.36 km) |
| Round Rock to Katerini | 6,226.16 mi (10,020.04 km) |
| Round Rock to Keratsini | 6,377.26 mi (10,263.21 km) |
| Round Rock to Kerkyra | 6,152.29 mi (9,901.16 km) |
| Round Rock to Kiato | 6,340.29 mi (10,203.71 km) |
| Round Rock to Kifisia | 6,379.82 mi (10,267.33 km) |
| Round Rock to Kilkis | 6,207.34 mi (9,989.74 km) |
| Round Rock to Komotini | 6,299.12 mi (10,137.46 km) |
| Round Rock to Korinthos | 6,350.80 mi (10,220.62 km) |
| Round Rock to Koropi | 6,390.67 mi (10,284.79 km) |
| Round Rock to Korydallos | 6,377.82 mi (10,264.11 km) |
| Round Rock to Kos | 6,574.08 mi (10,579.95 km) |
| Round Rock to Kozani | 6,196.40 mi (9,972.14 km) |
| Round Rock to Lagos | 6,285.95 mi (10,116.26 km) |
