| Donostia to Kenosha (Wisconsin) | 4,133.75 mi (6,652.63 km) |
| Donostia to Kent (Ohio) | 3,901.56 mi (6,278.96 km) |
| Donostia to Kent (Washington) | 5,189.80 mi (8,352.17 km) |
| Donostia to Kentwood (Michigan) | 4,024.75 mi (6,477.22 km) |
| Donostia to Kerman (California) | 5,679.34 mi (9,140.01 km) |
| Donostia to Kernersville (North Carolina) | 4,028.21 mi (6,482.77 km) |
| Donostia to Kerrville (Texas) | 5,156.49 mi (8,298.58 km) |
| Donostia to Kettering (Maryland) | 3,773.31 mi (6,072.56 km) |
| Donostia to Kettering (Ohio) | 4,079.13 mi (6,564.72 km) |
| Donostia to Kewanee (Illinois) | 4,273.01 mi (6,876.75 km) |
| Donostia to Key Biscayne (Florida) | 4,451.49 mi (7,163.98 km) |
| Donostia to Key Largo (Florida) | 4,487.80 mi (7,222.41 km) |
| Donostia to Key West (Florida) | 4,578.88 mi (7,368.99 km) |
| Donostia to Keystone (Florida) | 4,467.32 mi (7,189.46 km) |
| Donostia to Kihei (Hawaii) | 7,721.30 mi (12,426.24 km) |
