Bike around all of Lake Tahoe - you'll get beautiful views of the lake and awesome climbing plus you're at elevation!
You'll want to wake up early for this adventure. Be sure to have breakfast and hydrate before you start.
I suggest going clockwise around the lake. The elevation hit me. I also went with a group of friends, and what's nice about going in a group though is that you can stop every so often to make sure you're all with each other. The first 20 miles is uphill and hard. It was a lot of climbing.
At mile 20 you'll cruise. It's super flat for a good 10 miles. There are a couple of hills but even miles 30 – 50 are pretty speedy as well. We stopped at mile 50 to have lunch - delish :)
Miles 50-57ish is climbing. And climbing. And climbing. At mile 57 you'll go downhill. The views are gorgeous!
You'll finish at mile 72.2.