looking for recommandations for a hike with kids in Brasov area


Hi, we will be staying in Cristian next week and we are looking for a few hiking trails with our kids (ages 5 and 9) in the area, it could be 1-1.5hr drive from Cristian, nothing too steep, preferably a loop trail (though we could use 2 cars one at the begining and one at the end) 

help would be appreciated :-)