| Effingham to Karditsa | 5,459.74 mi (8,786.60 km) |
| Effingham to Kastoria | 5,381.00 mi (8,659.89 km) |
| Effingham to Katerini | 5,440.76 mi (8,756.05 km) |
| Effingham to Keratsini | 5,592.75 mi (9,000.66 km) |
| Effingham to Kerkyra | 5,368.48 mi (8,639.73 km) |
| Effingham to Kiato | 5,556.20 mi (8,941.84 km) |
| Effingham to Kifisia | 5,595.13 mi (9,004.49 km) |
| Effingham to Kilkis | 5,421.51 mi (8,725.08 km) |
| Effingham to Komotini | 5,512.84 mi (8,872.06 km) |
| Effingham to Korinthos | 5,566.66 mi (8,958.68 km) |
| Effingham to Koropi | 5,606.07 mi (9,022.10 km) |
| Effingham to Korydallos | 5,593.28 mi (9,001.51 km) |
| Effingham to Kos | 5,788.62 mi (9,315.88 km) |
| Effingham to Kozani | 5,411.23 mi (8,708.54 km) |
| Effingham to Lagos | 5,499.71 mi (8,850.93 km) |
