Bear Peak Hike from NCAR in Boulder, Colorado [Ultimate Guide]

Bear Peak is one of the most rewarding, booty-blasting, training day hikes near Denver and Boulder, and if you’re up for a challenge with huge views, this one should be on your list. I hiked it from the NCAR trailhead in Boulder, which adds a mellow warm-up before the real climb and makes it easy to tackle as a day hike from Denver or the Front Range. 

I’ve been living in Denver for over 2 years now and have kept putting this one off because I knew it would be a strenuous hike for not great views, and I’ve honestly never been the biggest fan of Boulder hike views, but this trail very much exceeded my expectations—and even ended with a tiny little scramble at the summit, which you’ll have to leave the pups behind for.

Trail Stats: NCAR to Bear Peak

HIKE TO: Bear Peak
TRAILHEAD: NCAR Trailhead
TRAIL: MNCAR Trail > Mesa Trail > Fern Canyon Trail
DISTANCE: 5.84 miles out and back
TIME: 3:40 hours 
DATE I WENT: 2/15/26
DIFFICULTY: moderate - strenuous
ELEVATION: 8,443 ft
ELEVATION GAIN: 2,359 ft
HIKE PERMIT: no
PARKING PERMIT: no
LOCATION: Boulder, Colorado

Bear Peak: Trail Overview

Bear Peak rises to about 8,443 feet and sits at the southern end of Boulder’s popular Flatirons, so you get those iconic sandstone slabs plus big Rocky Mountain views in one hike. From the NCAR trailhead, you’ll hike through rolling grassland and pines, then grind up a steep, rocky canyon before a short scramble to the summit.

This is not an easy after-work stroll; think sustained elevation gain, rough footing, and sections that feel more like a stair climber than a trail. In return, you get sweeping views of Boulder, Denver, the Indian Peaks, and even into Rocky Mountain National Park on a clear day.

I also hiked this trail while nursing my broken toe of 5 weeks so it’s definitely not too strenuous if you think you might not be in the best shape… just take your time.

Hiking Bear Peak from NCAR Trailhead

I started my Bear Peak hike at the NCAR trailhead on the west side of Boulder, which feels surprisingly close to town for how nature-y it gets later on. The first stretch on the NCAR Trail is mellow and wide, winding through the trees and surrounded by many other hikers.

At about 0.7 miles, you’ll connect with the Mesa Trail and start heading south, dipping in and out of ponderosa forest and crossing Bear Creek as the terrain gradually heads downhill before it tilts uphill. Enjoy the mellow trail here and those classic Boulder views before the real work begins.

From the Mesa Trail, you pick up the Fern Canyon trail in about 0.8 miles on your right and begin the sustained climb toward the ridge. The trail here is rocky, rutted, and often rooty, with many short switchbacks, big stone steps, and sections where you gain a lot of vertical in not a lot of distance.

2.42 miles from the trailhead, you will reach a saddle on the ridge towards the peak where the trees start to thin and the views open up dramatically on the opposite side. This ridge is very open and flat (nothing at all like knife-edge ridges) with plenty of space to feel comfortable hiking when you’re scared of heights. 

I’d also recommend taking a snack break before reaching this top part as the wind is often relentless from here to the peak.

From there, a short but steep, half-mile trail leads you to the final section: a hands-on scramble over rock slabs takes you to the true summit of Bear Peak. Take your time on this section.

At the top, you’re standing on a rocky perch with 360-degree views: Boulder spread out below, Denver off in the distance, and a wall of peaks filling the western horizon. It’s the kind of summit that makes all the huffing and puffing feel worth it.

More Colorado Trails You Might Like

For more Front Range summit hikes that feel big but are doable in a day, you might also like my guides to the best hikes in Rocky Mountain National Park and other favorite Colorado trails.

Difficulty, Distance, and Logistics

Bear Peak from NCAR is generally rated difficult, both for the steep grade and the rough trail conditions near the top. If your fitness level is relatively good though, it’s more of a moderate outing. Expect a few hours on trail at minimum; we took two hours to reach the peak.

This is a classic front range Colorado “hard but manageable” hike: no technical climbing, but short and relatively steep. I’d recommend sturdy shoes with good traction, trekking poles if your knees appreciate them, and extra layers — the summit can feel much windier and cooler than trailhead temps suggest.

If you’re looking for more tough-but-rewarding Colorado day hikes in the front range, check out my other posts on Mount Sanitas in Boulder or Mount Morrison near Red Rocks.

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FAQs About Bear Peak

How hard is Bear Peak?

Bear Peak is widely considered one of the most strenuous day hikes in the immediate Boulder area because of its steep grade and significant elevation gain over a relatively short distance. The canyon section (Fern Canyon Trail) is where most people really feel the burn, but the section leading to it is relatively chill. 

There’s also a short scramble near the summit on rough and slippery rock, which can feel exposed if you’re not a fan of heights, though it stays non-technical. If you’re comfortable with steep trails around Denver and Boulder and pace yourself, it’s a tough but very doable hike.

Is Bear Peak a 14er?

No, Bear Peak is not a 14er. Bear Peak tops out around 8,459 feet, which is far below Colorado’s 14,000-foot summits. It still feels like a solid mountain day and a great training hike for bigger peaks, especially if you live near Denver or Boulder and want something you can do without a huge drive.

Is Bear Peak part of the Flatirons?

Bear Peak sits at the southern end of Boulder’s famous Flatirons area, above the famous sandstone formations that line the west edge of town. While the Flatirons themselves are the dramatic rock slabs you see from the city, Bear Peak rises high behind them.

What are the 5 peaks in Boulder?

When people talk about the “Boulder peaks” behind town, they’re usually referring to a group of summits that includes Bear Peak and South Boulder Peak along with neighboring high points. Some lists vary, but commonly mentioned peaks in this skyline grouping include South Boulder Peak, Bear Peak, Green Mountain, Flagstaff Mountain, and Sanitas or nearby summits around the Flatirons.

These peaks are all popular day hikes from Boulder and can be linked in different combinations for bigger ridge days if you’re comfortable with long, steep routes. If you enjoy Bear Peak and want more, you’ll probably love exploring the rest of Boulder’s backyard summits and some of the other best day hikes near Denver.

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