| Rio Grande City to Karditsa | 6,504.32 mi (10,467.68 km) |
| Rio Grande City to Kastoria | 6,427.36 mi (10,343.84 km) |
| Rio Grande City to Katerini | 6,488.43 mi (10,442.12 km) |
| Rio Grande City to Keratsini | 6,636.74 mi (10,680.80 km) |
| Rio Grande City to Kerkyra | 6,410.28 mi (10,316.35 km) |
| Rio Grande City to Kiato | 6,598.73 mi (10,619.63 km) |
| Rio Grande City to Kifisia | 6,639.77 mi (10,685.67 km) |
| Rio Grande City to Kilkis | 6,471.29 mi (10,414.53 km) |
| Rio Grande City to Komotini | 6,566.16 mi (10,567.21 km) |
| Rio Grande City to Korinthos | 6,609.33 mi (10,636.70 km) |
| Rio Grande City to Koropi | 6,650.36 mi (10,702.71 km) |
| Rio Grande City to Korydallos | 6,637.37 mi (10,681.82 km) |
| Rio Grande City to Kos | 6,836.27 mi (11,001.92 km) |
| Rio Grande City to Kozani | 6,457.88 mi (10,392.95 km) |
| Rio Grande City to Lagos | 6,552.49 mi (10,545.22 km) |
