| Difficult Run to Isny im Allgau | 4,198.86 mi (6,757.41 km) |
| Difficult Run to Isselburg | 3,934.00 mi (6,331.17 km) |
| Difficult Run to Issum | 3,940.14 mi (6,341.04 km) |
| Difficult Run to Itzehoe | 3,994.70 mi (6,428.85 km) |
| Difficult Run to Jena | 4,160.82 mi (6,696.20 km) |
| Difficult Run to Jever | 3,943.33 mi (6,346.18 km) |
| Difficult Run to Jork | 4,011.66 mi (6,456.14 km) |
| Difficult Run to Juchen | 3,955.02 mi (6,364.99 km) |
| Difficult Run to Julich | 3,954.13 mi (6,363.55 km) |
| Difficult Run to Juterbog | 4,185.25 mi (6,735.50 km) |
| Difficult Run to Kaarst | 3,956.47 mi (6,367.33 km) |
| Difficult Run to Kaiserslautern | 4,052.58 mi (6,522.00 km) |
| Difficult Run to Kalkar | 3,929.63 mi (6,324.12 km) |
| Difficult Run to Kall | 3,971.98 mi (6,392.28 km) |
| Difficult Run to Kaltenkirchen | 4,013.63 mi (6,459.31 km) |
