2.8
(15)
44
hikers
Green Mountain Trail
03:43
12.9km
300m
Hiking
Embark on the Green Mountain Trail for a moderate hike offering expansive views of the Denver cityscape and the Front Range Foothills. This route covers 8.0 miles (12.9 km) with an elevation gain of 984 feet (300 metres), typically taking about 3 hours and 42 minutes to complete. As you climb, you will find yourself surrounded by open terrain, leading to rewarding vistas from Green Mountain Peak, where distant snow-dusted peaks are often visible. Prepare for significant sun exposure, as shade is limited along many sections of the trail.
Located approximately 20 minutes from downtown Denver, the trail is easily accessible for a quick escape into nature. You can find parking at various trailheads, including the William F. Hayden Park — West Alameda Parkway North Trailhead. Since this is a multi-use path, you will share the trail with mountain bikers and runners, so it is good to stay aware of your surroundings. Consider starting your hike earlier in the day to enjoy cooler temperatures and potentially fewer people.
The Green Mountain Trail is a popular destination within William Frederick Hayden Park, known for its accessible outdoor recreation close to the city. Beyond the panoramic views, the trail's open landscape provides opportunities to spot wildflowers, especially during spring and early summer. Its proximity to Denver and the consistent, moderate challenge make it a local favorite for those seeking a rewarding outdoor experience without venturing too far from urban conveniences.
Last updated: April 23, 2026
Tips
Your route passes through a protected area
Please check local regulations for:
Waypoints
Start point
Parking
Get Directions
5.54 km
Green Mountain Peak
Highlight • Summit
Tip by
12.2 km
Green Mountain and John Q. Hayden Trails Junction
Highlight • Trail
Tip by
12.9 km
William F. Hayden Park — West Alameda Parkway North Trailhead
Highlight • Rest Area
Tip by
12.9 km
End point
Way Types & Surfaces
Way Types
6.35 km
5.11 km
1.32 km
164 m
Surfaces
11.2 km
1.05 km
522 m
155 m
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Elevation
Highest point (2,070 m)
Lowest point (1,850 m)
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Weather
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Today
Saturday 9 May
24°C
9°C
0 %
Additional weather tips
Max wind speed: 24.0 km/h
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This route was planned by komoot.
Frequently Asked Questions
Where can I park to access the Green Mountain Trail?
The primary access point for this route is the William F. Hayden Park — West Alameda Parkway North Trailhead. There is ample parking available at this location.
What is the difficulty level of this trail?
This trail is generally considered moderate. While some initial segments can be steep, the route often levels out, making it suitable for a range of hikers, including families with older children. It features dirt paths, some rocky sections, and occasional log steps.
Is the Green Mountain Trail dog-friendly?
Yes, the trail is dog-friendly. However, all dogs must be kept on a leash at all times to protect wildlife and ensure the safety of all trail users.
What are the best times of year to hike this route?
Spring and early summer are excellent for experiencing wildflowers. Fall offers pleasant temperatures and clear views. Be prepared for full sun exposure year-round due to very little shade. Winter hiking is possible, but check conditions for ice or snow.
Are there any fees or permits required to hike in William Frederick Hayden Park?
No, there are typically no entrance fees or permits required to access the trails within William Frederick Hayden Park, where this route is located. It is open to the public for recreational use.
What kind of views can I expect along the way?
The trail offers expansive panoramic views, including the Denver cityscape, the Front Range Foothills, and distant snow-dusted peaks like Longs Peak. You might also spot Red Rocks, Dinosaur Ridge, and the Flatiron Mountains from various viewpoints, especially from Green Mountain Peak.
What should I bring for a hike on this trail?
Given the significant lack of shade, it's crucial to bring plenty of water, sunscreen, and a hat. Sturdy hiking shoes are recommended for the varied terrain. A map (digital or paper) is also advisable due to multiple intersecting routes.
Does this route connect with other trails?
Yes, this route is part of a larger trail system. It incorporates sections of the Green Mountain Trail, Rooney Valley Trail, South Foothill Drive Access Trail, and Summit Loop Trail. You'll also pass the Green Mountain and John Q. Hayden Trails Junction.
What wildlife might I encounter?
Hikers may encounter various wildlife, including deer, elk, and occasionally snakes (such as rattlesnakes in arid areas). The area is also home to diverse bird species and prairie vegetation.
Is the trail multi-use, and what should I be aware of?
Yes, the trail system is popular with hikers, mountain bikers, and runners. It's important to be aware of your surroundings. Mountain bikers are officially supposed to yield to hikers, but always maintain situational awareness.
Are there any specific navigation tips for this trail?
With multiple routes and trailheads, using a map or a navigation app like komoot is highly recommended to ensure you stay on your intended path and explore the various options effectively. The trail can be a bit confusing without guidance.