Hiked up to Elk/Thurston May 25, 2017. Clear sailing to Elk, just a couple small patches of snow. The snow starts up in earnest when you hit the trees between Elk and Thurston, about 2-3' deep, continuous for kilometer or so, and starting to get warm enough to be non supportive. I punched through in a few spots, and the trail is a bit hard to follow as the snow has been hard and people haven't left much tracks. Its not like you'll get lost (its a ridgewalk), but you may find yourself thrashing a bit through fallen trees if you get off route. Stopped at the viewpoint before Thurston, the rest of the way was solid snow with no visible uptrack. Hiked back with a nice fellow I met at the summit, we both noticed the snow was noticeably softer on the return. Microspikes helped.