Lake Nacimiento Classic is a 80 mile loop trail located near Paso Robles, CA and is only recommended for very experienced adventurers. The trail is primarily used for road biking and is accessible year-round.
We did not complete all 80 miles! The nice thing about this hike is that you have a constant lake view. The hike is not difficult but there are enough uphill areas so you feel you're getting a workout. I just kept wanting to stop and look at the lake. Check the temperature before you go because it can get really hot out there.