| Duffel to Keizer (Oregon) | 5,095.85 mi (8,200.97 km) |
| Duffel to Keller (Texas) | 4,946.27 mi (7,960.25 km) |
| Duffel to Kelso (Washington) | 5,026.36 mi (8,089.15 km) |
| Duffel to Kemp Mill (Maryland) | 3,855.95 mi (6,205.56 km) |
| Duffel to Ken Caryl (Colorado) | 4,873.55 mi (7,843.21 km) |
| Duffel to Kendale Lakes (Florida) | 4,642.50 mi (7,471.39 km) |
| Duffel to Kendall (Florida) | 4,642.25 mi (7,470.98 km) |
| Duffel to Kendall Park (New Jersey) | 3,695.07 mi (5,946.65 km) |
| Duffel to Kendall West (Florida) | 4,643.90 mi (7,473.63 km) |
| Duffel to Kenmore (New York) | 3,752.84 mi (6,039.61 km) |
| Duffel to Kenmore (Washington) | 4,914.81 mi (7,909.62 km) |
| Duffel to Kenner (Louisiana) | 4,828.12 mi (7,770.10 km) |
| Duffel to Kennesaw (Georgia) | 4,400.04 mi (7,081.18 km) |
| Duffel to Kennett (Missouri) | 4,503.51 mi (7,247.70 km) |
| Duffel to Kennewick (Washington) | 4,926.49 mi (7,928.42 km) |
