| Fostoria to Kinston (North Carolina) | 514.61 mi (828.18 km) |
| Fostoria to Kirkland (Washington) | 1,944.94 mi (3,130.08 km) |
| Fostoria to Kirksville (Missouri) | 484.47 mi (779.68 km) |
| Fostoria to Kirkwood (Missouri) | 412.05 mi (663.12 km) |
| Fostoria to Kiryas Joel (New York) | 480.20 mi (772.81 km) |
| Fostoria to Kissimmee (Florida) | 895.38 mi (1,440.97 km) |
| Fostoria to Klamath Falls (Oregon) | 1,963.93 mi (3,160.64 km) |
| Fostoria to Knightdale (North Carolina) | 456.22 mi (734.21 km) |
| Fostoria to Knik-Fairview (Alaska) | 3,017.43 mi (4,856.08 km) |
| Fostoria to Knoxville (Tennessee) | 359.82 mi (579.08 km) |
| Fostoria to Kokomo (Indiana) | 149.92 mi (241.28 km) |
| Fostoria to Kuna (Idaho) | 1,681.40 mi (2,705.95 km) |
| Fostoria to Kyle (Texas) | 1,118.16 mi (1,799.51 km) |
| Fostoria to La Cañada Flintridge (California) | 1,947.87 mi (3,134.80 km) |
| Fostoria to La Crescenta-Montrose (California) | 1,949.05 mi (3,136.70 km) |
