| Difficult Run to Krosno Odrzanskie | 4,260.57 mi (6,856.72 km) |
| Difficult Run to Krotoszyn | 4,359.48 mi (7,015.91 km) |
| Difficult Run to Kruszwica | 4,358.50 mi (7,014.33 km) |
| Difficult Run to Krynica | 4,572.94 mi (7,359.44 km) |
| Difficult Run to Krzeszowice | 4,496.48 mi (7,236.39 km) |
| Difficult Run to Kudowa-Zdroj | 4,356.69 mi (7,011.42 km) |
| Difficult Run to Kutno | 4,411.68 mi (7,099.91 km) |
| Difficult Run to Kwidzyn | 4,343.92 mi (6,990.86 km) |
| Difficult Run to Lancut | 4,596.23 mi (7,396.92 km) |
| Difficult Run to Lapy | 4,510.31 mi (7,258.65 km) |
| Difficult Run to Lask | 4,425.75 mi (7,122.56 km) |
| Difficult Run to Laziska Gorne | 4,466.26 mi (7,187.75 km) |
| Difficult Run to Lebork | 4,274.82 mi (6,879.66 km) |
| Difficult Run to Leczna | 4,573.40 mi (7,360.18 km) |
| Difficult Run to Leczyca | 4,412.03 mi (7,100.47 km) |
