Spring to Fall.
There are a number of great write ups on the Internet about this route, one of the best is by the guys at Our Mother the Mountain.
Monument Creek Trailhead. Dirt pullout road to the north of the main road.
If you’re looking for more climbing / more distance, there are two additional options we recommend. (1) Start at the Mazama Store, this will add 13 miles and 600 feet of gain, or (2) do the dogleg out to Brown Bear Mine from Harts pass, this will add 3 miles and 400 feet of gain.
Have you ridden this route? Got a question? Join the discussion!