Nobody has said anything about Vesper! Vesper Peak is without a doubt my favorite hike in the Cascades, and it blows my mind how little known it is compared to a lot of other hikes (not that I'm complaining). It is fairly short considering how high you get (7.5 miles round trip), and the hike has very distinct sections so it is really just never boring. And man, it is so beautiful! Only a mile and a half from the trailhead you are already in a huge, beautiful alpine basin. There is about 400 feet of ridiculously solid and just pure fun granite slab scrambling to the top, and there is a gorgeous campsite right before you start the scramble if you wanted to do it as an overnight. You could probably keep this as low as class 2 if you really tried, but it is such solid, amazing rock that I was zigzagging all over little knob studded low fifth class steps just to make things fun. It is shorter than anything I would do as an overnight, but its really not to be missed.