Mormon Pioneer Trail
This trail runs from the Little Dell Reservoir area up to Big Mountain Pass, following the old route used by the Donner Party and the Mormon Pioneers. You can ride up and then back, or use a shuttle to ride one-way. The uphill is steep and strenuous but only moderately technical. The downhill is fast and thrilling.
Trailhead
(40.757231, -111.717354)
If you get on the trail at Little Dell Reservoir it is about 5.5 miles to the top. The trail parallels the road and you can start or end at other spots to shorten the ride.