| Donostia to Kaneohe (Hawaii) | 7,708.03 mi (12,404.87 km) |
| Donostia to Kankakee (Illinois) | 4,189.47 mi (6,742.30 km) |
| Donostia to Kannapolis (North Carolina) | 4,078.23 mi (6,563.28 km) |
| Donostia to Kansas City (Kansas) | 4,564.70 mi (7,346.18 km) |
| Donostia to Kansas City (Missouri) | 4,556.58 mi (7,333.11 km) |
| Donostia to Kapaa (Hawaii) | 7,694.18 mi (12,382.58 km) |
| Donostia to Kapolei (Hawaii) | 7,718.06 mi (12,421.01 km) |
| Donostia to Katy (Texas) | 5,018.80 mi (8,076.97 km) |
| Donostia to Kaukauna (Wisconsin) | 4,087.17 mi (6,577.66 km) |
| Donostia to Kaysville (Utah) | 5,165.00 mi (8,312.27 km) |
| Donostia to Kearney (Missouri) | 4,538.65 mi (7,304.25 km) |
| Donostia to Kearney (Nebraska) | 4,678.75 mi (7,529.72 km) |
| Donostia to Kearns (Utah) | 5,185.77 mi (8,345.68 km) |
| Donostia to Kearny (New Jersey) | 3,586.67 mi (5,772.19 km) |
| Donostia to Keene (New Hampshire) | 3,433.91 mi (5,526.35 km) |
