The Spruce Flats Falls trail is rated "moderate" because some portions are rocky and steep... and there are lots of exposed tree roots that are easy to trip over. The hike to the waterfall definitely requires some effort. It's almost a 1.5-mile round trip. It took us 30 minutes to hike to the falls carrying my toddler son in his hiking carrier. The Spruce Flats Falls hike (with time spent at the swimming hole and waterfalls) takes about 2 hours. See my best tips before you go...