This hike is not worth it. The meadow is pretty but nothing spectacular. The initial switchbacks are brutal, and you will want to do them no later than 8 AM because you'll be in the hot sun the whole time. The view is amazing up the switchbacks and the footbridges to cross Bubbs creek are very cool, but after that the hike just isn't worth it. It's also more like 24 miles, not 20. Did it in a day and it was extremely exhausting to say the least, with not that much payoff unfortunately.