| Opfikon to Keizer (Oregon) | 5,407.91 mi (8,703.20 km) |
| Opfikon to Keller (Texas) | 5,234.88 mi (8,424.73 km) |
| Opfikon to Kelso (Washington) | 5,338.34 mi (8,591.23 km) |
| Opfikon to Kemp Mill (Maryland) | 4,125.84 mi (6,639.90 km) |
| Opfikon to Ken Caryl (Colorado) | 5,177.91 mi (8,333.04 km) |
| Opfikon to Kendale Lakes (Florida) | 4,885.43 mi (7,862.34 km) |
| Opfikon to Kendall (Florida) | 4,884.95 mi (7,861.57 km) |
| Opfikon to Kendall Park (New Jersey) | 3,964.52 mi (6,380.29 km) |
| Opfikon to Kendall West (Florida) | 4,886.89 mi (7,864.69 km) |
| Opfikon to Kenmore (New York) | 4,034.61 mi (6,493.08 km) |
| Opfikon to Kenmore (Washington) | 5,226.67 mi (8,411.51 km) |
| Opfikon to Kenner (Louisiana) | 5,100.96 mi (8,209.21 km) |
| Opfikon to Kennesaw (Georgia) | 4,671.12 mi (7,517.44 km) |
| Opfikon to Kennett (Missouri) | 4,787.34 mi (7,704.48 km) |
| Opfikon to Kennewick (Washington) | 5,238.67 mi (8,430.83 km) |
