This was an amazing hike! I definitely agree with the hard rating. My husband and I hiked the route starting at Rodeo Beach up to Muir Beach. Lots of Beach scenery and lots and lots of hills, including two very steep hills! We packed a lunch for the halfway point and ate before we returned. We also too 3 liter camelbacks of water each and pretty much killed it off. Layers of clothing is a must as well. The Beach is cool while part of the hike that is away from the beach is warmer, plus it heats up in the afternoon. I would definitely do this hike again!