I did this trail the past Sunday 6/18/17. We made it all the way to Scout Lake in Jefferson Park right at the base of Jefferson. Weather was incredible. LOTS of snow still. Most of the trail is snow still. We got lost several times not being able to identify the trail properly. We had microspikes and poles which I'd highly recommend. Sunglasses and sunscreen as well. Views were just incredible the entire way. GPS also recommend. Tough hike in the soft snow, but worth it, and conditions only will get better (but crowds will pour in when they do).