| Boppard to Kinston (North Carolina) | 4,201.49 mi (6,761.65 km) |
| Boppard to Kirkland (Washington) | 5,041.61 mi (8,113.68 km) |
| Boppard to Kirksville (Missouri) | 4,546.58 mi (7,317.01 km) |
| Boppard to Kirkwood (Missouri) | 4,547.66 mi (7,318.75 km) |
| Boppard to Kiryas Joel (New York) | 3,785.66 mi (6,092.43 km) |
| Boppard to Kissimmee (Florida) | 4,700.07 mi (7,564.03 km) |
| Boppard to Klamath Falls (Oregon) | 5,356.43 mi (8,620.34 km) |
| Boppard to Knightdale (North Carolina) | 4,214.16 mi (6,782.03 km) |
| Boppard to Knik-Fairview (Alaska) | 4,614.32 mi (7,426.04 km) |
| Boppard to Knoxville (Tennessee) | 4,425.63 mi (7,122.36 km) |
| Boppard to Kokomo (Indiana) | 4,293.71 mi (6,910.05 km) |
| Boppard to Kuna (Idaho) | 5,137.92 mi (8,268.68 km) |
| Boppard to Kyle (Texas) | 5,273.58 mi (8,487.01 km) |
| Boppard to La Cañada Flintridge (California) | 5,731.19 mi (9,223.45 km) |
| Boppard to La Crescenta-Montrose (California) | 5,730.91 mi (9,223.01 km) |
