| Donostia to Kinston (North Carolina) | 3,942.39 mi (6,344.67 km) |
| Donostia to Kirkland (Washington) | 5,173.41 mi (8,325.80 km) |
| Donostia to Kirksville (Missouri) | 4,427.81 mi (7,125.87 km) |
| Donostia to Kirkwood (Missouri) | 4,400.19 mi (7,081.43 km) |
| Donostia to Kiryas Joel (New York) | 3,569.61 mi (5,744.73 km) |
| Donostia to Kissimmee (Florida) | 4,402.76 mi (7,085.56 km) |
| Donostia to Klamath Falls (Oregon) | 5,448.35 mi (8,768.27 km) |
| Donostia to Knightdale (North Carolina) | 3,965.65 mi (6,382.09 km) |
| Donostia to Knik-Fairview (Alaska) | 4,971.45 mi (8,000.77 km) |
| Donostia to Knoxville (Tennessee) | 4,212.83 mi (6,779.89 km) |
| Donostia to Kokomo (Indiana) | 4,137.92 mi (6,659.33 km) |
| Donostia to Kuna (Idaho) | 5,201.77 mi (8,371.43 km) |
| Donostia to Kyle (Texas) | 5,102.60 mi (8,211.84 km) |
| Donostia to La Cañada Flintridge (California) | 5,742.60 mi (9,241.82 km) |
| Donostia to La Crescenta-Montrose (California) | 5,742.75 mi (9,242.06 km) |
