KRKA Ultra Challenge is an international charity race with 4 different events where the purpose, regardless of distance, is to challenge yourself & push your limits for a good cause = raising awareness & money for diabetes charity #Run4Diabetes. Everything associated with KRKA Ultra Challenge will contribute to charity (part of entry fee, sponsors etc.). The environment is in & around the magnificent Krka National Park, and the routes follow the Krka river passing several impressive landmarks, viewpoints & waterfalls before finishing at the beach of the beautiful town Skradin. The majority of the routes are trails with parts of really technical running. Come join us – are you Insane (80km), Crazy (53km), Mad (27km) or Happy (10km)?