One of Colorado's Centennial peaks (13,950 ft). Approximately 8 miles RT3,500 ft of elevation gain.
Start from the McCullough gulch trailhead. If possible it would be worth having 2 cars and leaving one at the main McCullough trailhead so you don't have to walk the road on your way down.
Bushwack through trees and willows up the ridge directly to the north of the trailhead. You might be lucky and find a few faint trails, but you're mostly on your own here. After ascending above treeline, veer west and follow the obvious ridgeline towards the peak.
The ridge starts off with wide tundra and light tallus, but as you continue begins to offer more exciting scrambling and exposure. You can definitely keep the whole ridge to low Class III/Class II the whole way, but we also found plenty of spots to get some fun Class IV scrambling in. Increase the difficulty by staying directly on the ridgeline, or drop to the south side for easier terrain.
Once the ridge peters out, cross a large tallus field to the prominent summit of Pacific Peak, directly ahead.
To return, either retrace your steps back along the ridge, or drop down to the south and into the McCulloch Gulch trail. You'll have to cross a large tallus basin before picking up the trail near the bottom slopes of Quandary. If taking this route, you'll exit at the McCulloch Gulch trailhead and have to hike or hitch a ride back to the north trailhead.