Wielun Jura Trail (Szlak Jury Wieluńskiej) is a tourist core of Polish Jura (Jura Polska) between Wielun (on the north) and Czestochowa (on the south). Its route goes by indicated administrative units:
Polish Jura (Krakow-Czestochowa Jura/Krakow-Wielun Jura) is a various tourist region. Trying to determine its border based on e.g. geological structure, geographic regions, locations of medieval castles or battles of World War II we will see that they are not located exactly in the same area. This is why attempting to mark clearly and precisely the borders of Polish Jura seems to be impossible.