| Effingham to Kaneohe (Hawaii) | 4,207.89 mi (6,771.94 km) |
| Effingham to Kankakee (Illinois) | 141.63 mi (227.94 km) |
| Effingham to Kannapolis (North Carolina) | 502.12 mi (808.09 km) |
| Effingham to Kansas City (Kansas) | 331.92 mi (534.17 km) |
| Effingham to Kansas City (Missouri) | 321.73 mi (517.77 km) |
| Effingham to Kapaa (Hawaii) | 4,264.87 mi (6,863.64 km) |
| Effingham to Kapolei (Hawaii) | 4,225.25 mi (6,799.88 km) |
| Effingham to Katy (Texas) | 766.03 mi (1,232.80 km) |
| Effingham to Kaukauna (Wisconsin) | 356.61 mi (573.90 km) |
| Effingham to Kaysville (Utah) | 1,240.15 mi (1,995.83 km) |
| Effingham to Kearney (Missouri) | 311.23 mi (500.88 km) |
| Effingham to Kearney (Nebraska) | 568.40 mi (914.76 km) |
| Effingham to Kearns (Utah) | 1,244.48 mi (2,002.80 km) |
| Effingham to Kearny (New Jersey) | 771.87 mi (1,242.21 km) |
| Effingham to Keene (New Hampshire) | 885.66 mi (1,425.33 km) |
