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    Green Mountain West Trail

    This reflects the 10Adventures difficulty rating for each route. We aim to keep ratings consistent across regions.
    This reflects the estimated time the majority of users will take on this trail. If you are slower, add time to the top-end figure. If you are fast, then you may complete this route faster than this time range.
    This reflects the return distance of this route as measured by the GPS file.
    6.4 km
    This reflects the total elevation gained throughout this route as measured by the GPS file. This includes all ascents and descents, and is higher than what is quoted in most route guides, which simply measure the distance between the starting-point and high-point of the route.
    220 m
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    Directions to Trailhead

    The Green Mountain West Trail is a stunning adventure near Boulder. Though many gravitate to the Flatiron hikes along the western flank of the mountain, we urge you to try the Green Mountain West Trail on your next journey to Boulder. This stunning hike will reward its conquerors with a different perspective of the sandstone slabs and delivers expansive views of the Colorado 14ers from the summit.

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    Route Description for Green Mountain West Trail

    The Green Mountain West Trail is the easiest of Boulder’s Big Three summit hikes, the other two being Bear Peak and South Boulder Peak. This charming adventure is one for the books! More easily manageable than the flatirons, this path delivers epic, unparalleled views of the Indian Peaks Wilderness. The initial segment of this hike is level prior to dipping below the tree coverage of towering pines and climbing up to the summit. Perfect for those seeking an introductory hike to summit adventurers, this path will challenge you, but won’t over-exhaust you. Open-year, round, those who venture in the winter months will have a more sequestered experience. If you hike in the off-season, be sure to wear microspikes to navigate the inevitably icy terrain. It is also worth noting that there are steep sections near the summit, so be prepared for a butt burner!

    The Green Mountain West Trail packs a punch. Wonderful for conditioning before summiting a Colorado 14er or simply just to get out into the fresh air, this hike checks all the boxes. Additionally, this hike presents the perfect opportunity to spot wildlife. As you wander through the grasslands and up through the pine forests, you will likely spot grazing deer, elk, or maybe even prairie dogs! Kids, adults, experts, and novice hikers alike will love the Green Mountain West Trail just as much as we do! What are you waiting for? Let’s go!

    Embark on your adventure along the Green Mountain West Trail from the trailhead off Flagstaff Road. From the trailhead, the Green Mountain West Ridge Trail tracks east through an exposed grassland. As you hike along the exposed terrain enjoy views of the surrounding foothills. You’ll notice Bear Creek in the south as you near the base of Green Mountain. Eventually, you will encounter an intersection. Here, keep left and you will begin your ascent up the western flank of Green Mountain. Beginning your climb, the terrain will become increasingly forested, though still sparse enough to deliver epic vistas.

    The further you climb into the wilderness the steeper the path. Navigate the switchbacks, ignoring intersecting and merging paths. Be mindful of your footing as you climb up the steep path. Enjoy the sporadic shade of the towering pines, you will soon ascend the peak. From the summit of Green Mountain, you will be rewarded with expansive views of the Front Range snow-capped peaks. Either the amazing sights or steep climb will take your breath away. Notice Longs Peak and its neighboring craggy peaks that line the horizon in the west and enjoy sights of Bear Peak and South Boulder Peak in the south. After reveling in the panoramic vistas, retrace your footing along the path all the way back to the trailhead, making the end of your adventure.

    Trail Highlights

    Green Mountain, Boulder

    Green Mountain is an 2,484 m summit on the boundary of Boulder’s city limits. Situated in the foothills, Green Mountain is more commonly known for the Flatiron rock formations that sit on the mountain’s eastern flank. The sandstone rock formations are a beloved characteristic of Boulder. A popular hiking and rock-climbing destination, the summit of Green Mountain provides expansive views of Bear Peak, the Boulder cityscape, and Flagstaff Mountain. Fun fact: There are over 20 officially named Green Mountains in Colorado. How confusing!

    Frequently Asked Questions

    Are dogs allowed on Green Mountain, Boulder?

    Yes, dogs are permitted on the Green Mountain trails if they remain on-leash.

    How long is the Green Mountain West Trail?

    The Green Mountain West Trail is a 6.5 km out-and-back hike.

    Insider Hints for Green Mountain West Trail

    • In the winter months make sure to wear crampons to help navigate the snowy and icy terrain
    • Charge up your camera because you are going to want to take pictures along this scenic adventure
    • Older kids should have no difficulties hiking this path, but the steep ascent to the summit may prove challenging for young children
    • If you have knee or joint issues, we highly recommend trekking poles to help you more comfortably navigate the steep terrain

    Getting to the Green Mountain West Trail Trailhead

    The Green Mountain West Trail departs from the trailhead off Flagstaff Road.

    Route Information

    • Backcountry Campground


    • When to do


    • Pets allowed

      Yes - On Leash

    • Family friendly

      Older Children only

    • Route Signage


    • Crowd Levels


    • Route Type

      Out and back

    Green Mountain West Trail Elevation Graph

    Weather Forecast

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    Green Mountain West Trail Reviews

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