Catherines Pass Trail  at Albion Basin
The Catherines Pass trail is not something the typical mountain biker will want to do. It's very steep with technical sections and more than a little hiking with your bike as baggage. It's reserved for tough and skilled riders looking for a challenge. It can be done as an up-and-back trip to the viewpoint, but is primarily used to access the Great Western Trail for long brutal trips by adventurous souls. The direct route has 2.1 miles of dirt road and 1.4 miles of tough singletrack, climbing to 11000 feet.
Riding notes, Albion entry station to pass:
0.0   Pass guard shack to Albion Basin road
N40 35.526 W111 37.865
2.1   L onto Catherines singletrack
N40 34.969 W111 37.102
2.3   Keep left and uphill at lift road fork
N40 34.958 W111 36.812
2.8   Fork L uphill (R = to campground)
N40 34.740 W111 36.476
3.5   At pass, Great Western Trail
N40 34.851 W111 35.921
L = to Ant Knolls, Ridge 157
R = to Mineral Basin
Route through campground:
0.0   Pass guard shack to Albion Basin road
N40 35.526 W111 37.865
2.1   Stay on Albion Basin Road (L = Catherines)
N40 34.969 W111 37.102
2.6   Straight south in campground
2.8   Turn L (east) N40 34.503 W111 36.736
2.9   R on ST as road turns left
N40 34.554 W111 36.605
3.4   R uphill (L = to Albion Basin road)
N40 34.740 W111 36.476
4.1   At pass, Great Western Trail
N40 34.851 W111 35.921
Getting there:
From I-15, take the 90th South exit and drive east towards the mountains. This will take you directly to Little Cottonwood. When you arrive at the stop sign in the canyon, with the giant illuminated Little Cottonwood conditions sign on your right, turn right uphill and drive 8 miles to Alta. Keep straight until the end of the road. Park on the right side of the road just before the information booth (the booth is between the lanes of the road just before it turns to gravel).

Trail conditions, connections, and alignments will change. Use this guide at your own risk