Union Peak Trail

Overview

This is a longer, quieter summit day that pays off big at the top. The Union Peak Trail is an out-and-back that uses the Pacific Crest Trail (PCT) before branching to the summit. It’s roughly 9.6–10 miles total, with about 1,600–1,900 feet of elevation gain. Plan on 5–6 hours for the round trip.

Route and Experience

You’ll start on the PCT off Highway 62. The first few miles are mellow and mostly flat through dense forest—the classic “green tunnel.” Watch for the signed junction where the Union Peak spur breaks off. From there, the grade steepens and the character changes: forest gives way to open pumice and rocky slopes, and the final approach includes a short, exposed, hands-on scramble along a rocky spine to the summit.

Views, Geology, and What to Look For

The summit is a barren, wind-swept ridge with wide-open, 360° views. On clear days you can pick out Mount Shasta to the south, Mount Thielsen to the north, and volcanic landmarks on the Crater Lake rim like Mount Scott and Llao Rock. Note: you won’t see Crater Lake itself from the summit. Union Peak is a heavily eroded shield volcano whose sharp summit was carved by Ice Age glaciers—think steep cirques and rugged, sculpted rock. Along the way, look for lodgepole pine and mountain hemlock in the lower forest, then hardy high-country plants like western pasqueflower, Oregon stonecrop, and whitebark pine clinging to the upper slopes. Black bears are present in the area, most often in the forested approach.

Difficulty and Who It’s For

Most of the mileage is straightforward, but the summit block adds exposure and light scrambling. Hikers comfortable with a bit of hands-on terrain will find it rewarding; if you dislike heights, the final ridge may feel spicy. There’s no water on the route, and the forested approach can feel monotonous—this is a hike for people who don’t mind earning their views.

Best Time to Hike

Aim for late June through September, when snow has melted from the upper trail and summit. Earlier in the season, lingering snow can complicate navigation and make the upper slopes hazardous. Start early for cooler temps and calmer winds, and consider weekdays for maximum solitude.

Tips and Practicals

• Trailhead parking is at the signed PCT lot off Highway 62 near the Mazama Village entrance station (outside the gate).
• Bring plenty of water; there are no reliable sources. Expect strong winds on the summit ridge.
• Trekking poles help on the long descent and loose, rocky sections.
• In winter and spring, this route is not recommended unless you’re very experienced and prepared for deep snow and avalanche terrain.

Bottom Line

Underrated and uncrowded, Union Peak trades postcard lake views for real summit vibes and a geology lesson. If you want a half-day objective with solitude and a little scramble at the end, this is one of the better plays in the park’s south side. If you’re after easy lake views, pick a rim hike instead.