| Difficult Run to Kidricevo | 4,479.04 mi (7,208.31 km) |
| Difficult Run to Kobarid | 4,393.09 mi (7,069.99 km) |
| Difficult Run to Kobilje | 4,493.50 mi (7,231.59 km) |
| Difficult Run to Kocevje | 4,467.26 mi (7,189.36 km) |
| Difficult Run to Komen | 4,415.06 mi (7,105.36 km) |
| Difficult Run to Komenda | 4,434.24 mi (7,136.22 km) |
| Difficult Run to Koper | 4,423.52 mi (7,118.97 km) |
| Difficult Run to Kostanjevica na Krki | 4,483.52 mi (7,215.52 km) |
| Difficult Run to Kostel | 4,474.10 mi (7,200.36 km) |
| Difficult Run to Kozje | 4,480.98 mi (7,211.44 km) |
| Difficult Run to Kranj | 4,426.21 mi (7,123.30 km) |
| Difficult Run to Kranjska Gora | 4,393.57 mi (7,070.77 km) |
| Difficult Run to Krizevci | 4,487.41 mi (7,221.78 km) |
| Difficult Run to Krsko | 4,482.25 mi (7,213.49 km) |
| Difficult Run to Kuzma | 4,475.52 mi (7,202.65 km) |
