Booth Lake is one of four glacial valley lakes accessible from exit #180 - just across the highway from Vail. While the trail to Booth Lake is in a glacial valley, it is consistently steeper than the trail to Pitkin Lake (which is just to the right of Booth Lake). Whereas the trail to Pitkin lake has significant elevation gain very early on in the hike. The trail to Booth lake doesn't have the big jump off of the valley floor like Pitkin lake, it's a steady, and noticeable incline all the way to Booth Lake.
I got lucky with the weather on the up to the lake. It was great, a few puffy white clouds racing by and a very light breeze. The views are amazing, you can see the classic layered rock formations you see throughout Vail, Red Cliff and Minturn. The wildflowers are in full bloom right now, making the trail very colorful. Closer to Booth Lake, the granite peaks are very dramatic against the blue sky. There are marmots everywhere, and I did get to see a family of Mountain Goats at Booth Lake. The weather turned quickly once at Booth Lake. The way back was a mix of dark clouds, thunder and rain, but mostly rain for the last hour or so. It was a beautiful hike, even with the crazy weather we've been having this hiking season. Checkout my GPS tracks here.