| Difficult Run to Katwijk | 3,843.66 mi (6,185.77 km) |
| Difficult Run to Kerkrade | 3,943.93 mi (6,347.14 km) |
| Difficult Run to Klazienaveen | 3,930.38 mi (6,325.33 km) |
| Difficult Run to Koog aan de Zaan | 3,852.12 mi (6,199.39 km) |
| Difficult Run to Krimpen aan den IJssel | 3,857.34 mi (6,207.79 km) |
| Difficult Run to Krommenie | 3,849.98 mi (6,195.95 km) |
| Difficult Run to Kudelstaart | 3,855.91 mi (6,205.48 km) |
| Difficult Run to Landgraaf | 3,941.32 mi (6,342.95 km) |
| Difficult Run to Landsmeer | 3,857.54 mi (6,208.11 km) |
| Difficult Run to Langedijk | 3,846.26 mi (6,189.96 km) |
| Difficult Run to Laren | 3,874.60 mi (6,235.57 km) |
| Difficult Run to Leek | 3,895.98 mi (6,269.97 km) |
| Difficult Run to Leerdam | 3,878.25 mi (6,241.45 km) |
| Difficult Run to Leeuwarden | 3,872.02 mi (6,231.42 km) |
| Difficult Run to Leiden | 3,847.55 mi (6,192.04 km) |
