| Boppard to Kenosha (Wisconsin) | 4,257.80 mi (6,852.27 km) |
| Boppard to Kent (Ohio) | 4,078.58 mi (6,563.85 km) |
| Boppard to Kent (Washington) | 5,060.05 mi (8,143.37 km) |
| Boppard to Kentwood (Michigan) | 4,159.06 mi (6,693.37 km) |
| Boppard to Kerman (California) | 5,636.71 mi (9,071.40 km) |
| Boppard to Kernersville (North Carolina) | 4,263.84 mi (6,861.99 km) |
| Boppard to Kerrville (Texas) | 5,318.20 mi (8,558.82 km) |
| Boppard to Kettering (Maryland) | 4,000.87 mi (6,438.78 km) |
| Boppard to Kettering (Ohio) | 4,254.52 mi (6,846.99 km) |
| Boppard to Kewanee (Illinois) | 4,398.18 mi (7,078.18 km) |
| Boppard to Key Biscayne (Florida) | 4,778.39 mi (7,690.07 km) |
| Boppard to Key Largo (Florida) | 4,817.60 mi (7,753.17 km) |
| Boppard to Key West (Florida) | 4,904.05 mi (7,892.30 km) |
| Boppard to Keystone (Florida) | 4,758.28 mi (7,657.71 km) |
| Boppard to Kihei (Hawaii) | 7,435.21 mi (11,965.82 km) |
