I did it this weekend (Aug 14) but slightly different. Valley --> Clouds Rest --> Sunrise Lakes --> Tenaya Lake. Totally do-able if you are in good shape but you either have somebody to pick you up at Tenaya lake or take the shuttle back. I started 6:45 and it took me 2 h to top of Nevada Fall (via Muir trail). Then another 1:10 to the Clouds Rest jct (4.3 Miles to go). I was on toby HikeMike - General Discussion