| Opfikon to Kenosha (Wisconsin) | 4,403.81 mi (7,087.25 km) |
| Opfikon to Kent (Ohio) | 4,212.62 mi (6,779.55 km) |
| Opfikon to Kent (Washington) | 5,247.07 mi (8,444.34 km) |
| Opfikon to Kentwood (Michigan) | 4,302.66 mi (6,924.47 km) |
| Opfikon to Kerman (California) | 5,814.19 mi (9,357.04 km) |
| Opfikon to Kernersville (North Carolina) | 4,384.44 mi (7,056.08 km) |
| Opfikon to Kerrville (Texas) | 5,458.96 mi (8,785.34 km) |
| Opfikon to Kettering (Maryland) | 4,122.66 mi (6,634.78 km) |
| Opfikon to Kettering (Ohio) | 4,389.46 mi (7,064.15 km) |
| Opfikon to Kewanee (Illinois) | 4,544.35 mi (7,313.43 km) |
| Opfikon to Key Biscayne (Florida) | 4,875.44 mi (7,846.26 km) |
| Opfikon to Key Largo (Florida) | 4,913.88 mi (7,908.12 km) |
| Opfikon to Key West (Florida) | 5,001.93 mi (8,049.83 km) |
| Opfikon to Keystone (Florida) | 4,865.63 mi (7,830.47 km) |
| Opfikon to Kihei (Hawaii) | 7,633.40 mi (12,284.76 km) |
