Horribly marked. Only ended up doing Glenn Helen because the trail that supposedly connected to the rest was overgrown and we couldn't tell where it was. Then tried to cut through to the other side of the loop to head back according the map and ended up on a road...? We had to climb over the guardrail to get to the other side of the river and continue. Very disappointing to hike overgrown trails with plants slapping you in the face and not knowing where you are. Also would have loved to do the whole thing to the gorge... Sad.