Start at The Grotto shuttle stop, cross the road and bridge, then cross the Virgin River as you join the West Rim Trail. The first climb is steep, with switchbacks rising along the canyon wall. Most of the tread is hard concrete; some stretches are concrete covered by firm soil, and there’s a little soft sand near the top. This is a steady uphill hike, not a quick walk to an overlook, and the exposed lower climb can feel hot.
The trail levels out as it enters Refrigerator Canyon. That flatter, cooler stretch is a welcome break from the first climb, but it doesn’t last long. Soon the trail turns uphill again for Walter’s Wiggles, a set of 21 switchbacks that carries you to Scout Lookout. Take your time here: the turns are close together and the grade is steep, but the trail itself is the main event of the hike.