Page Type Page Type: Mountain/Rock
Location Lat/Lon: 40.43220°N / 105.4244°W
Additional Information County: Larimer
Activities Activities: Hiking
Seasons Season: Spring, Summer, Fall, Winter
Additional Information Elevation: 9233 ft / 2814 m
Sign the Climber's Log


Table Rock
Winters' storm at Table Rock
Crosier Mountain is a somewhat hidden highpoint in a multitude of other Front Range peaks as the foothills transition into the mountains proper, specifically Rocky Mountain National Park and the Mummy Range. This mountain has year round access via three separate trails: Garden Gate, Rainbow Trail/Gravel Pit and Glen Haven. All are conveniently located within 8 miles of one another along CR43 between the towns of Drake and Glen Haven.

The Northern Colorado Mountains and the Roosevelt National Forest are very different from other Colorado wilderness areas. Most notable is the dryness/lack of water and flora. Crosier Mountain is a dry mountain with little to no water sources. So remember to bring plenty of fluids. And even then, I'd be leary of what you do find (even filtering) due to the overwhelming large presence of wildlife in the area. It can get intolerably hot in the middle of summer.

Despite the dryness and heat, all three trails are surprisingly delightful to hike, mountain bike or ride pack animals on (dogs are also allowed!). All three trails are of a moderate difficulty with Garden Gate being a borderline strenous but this more due to its length. On the trail, you'll encounter elk, whitetail, rabbit and the occasional porcupine or skunk. The usual barrage of squirrels and chipmunks as it winds through a landscape of Pine, Juniper, Bitterbrush, Yucca (Spanish bayonet) and Prickly Pear cactus can also be expected.

This is prime mountain lion habitat and black bear is frequently seen in the environs come spring into early summer as they forage and again in fall as they begin to put on weight. I have personally seen bear on two separate occasions in the hills just across the valley. Making loud noises will definitely 'announce' your presence to minimize any 'surprises'. Also, keeping dogs leashed in cat and bear country...I think goes without say. I've heard of Newfoundlands being attacked and killed by mountain lion, despite their size. So be aware while hiking or train-running.

Over the previous 10 years, there have been small prescribed burns and the Bobcat fire in 2000 (human caused) which burned thousands of acres of National Forest. The forest, however, has made an amazing comeback since.

The summit of Crosier Mountain will reward you with panoramics of Twin Sisters Peaks and Longs Peak to the south, Estes Park and Rocky Mountain National park to the southwest and west, Signal Mountain to the northwest and the Front Range to the east.
For additional information, please contact the following address or e-mail:

Crosier Mountain and environs 

Correction: The blue line is actually the 'GRAVEL PIT' trail.

U.S. Forest Service Center
1311 South College
Fort Collins, Colorado 80524

Garden Gate Trailhead #931

Garden Gate
Garden Gate TH

This trailhead is roughly 2.7 miles from the turnoff in Drake leaving Hwy.34 (Big Thompson Canyon). There is a small parking area on the south side (left) of the road. You'll need to open and close the gate to access the trail. From here, it is about 10.2 miles (RT) with a starting elevation of 6428ft. and ending at 9233ft.

Utilizing this trailhead, one can make for a fairly decent loop run by connecting one of the other two trails (trailheads) thereby, taking the road back to the Garde Gate Trail-head. The summit spur is only about .5 miles for a small addition.
The intersection with the Rainbow/Gravel Pit Trail comes after 5.8 miles and descending all the way to Glen Haven using the Glen Haven Trail comes in at about 7.8 miles. Then of course, the road-run back down to the Garden gate Trail-head.

This particular trail enjoys quite a bit of solitude and quiet and there is ample camping further up the trail in an obvious meadow. At ~3 miles up this trail, the terrain opens up into a nice flat valley with a seasonal but small stream that runs its course. There are plenty of places to pitch a tent here and the odds of seeing deer or fox is high.

The trail starts gently enough and switchbacks quickly to attain the south ridge which is in plain sight for most of the way. Once over, the trail will drop and rise sporadically and deposit you into said long meadow with easy hiking and some awesome camping spots. Once past, it climbs again up a shallow ravine until it levels off in dense Pine forest and meets up the Rainbow/Gravel Pit Trail. It is then only another 1/2 mile of incline to the top.

Rainbow Trail/Gravel Pit Trailhead #981

Rainbow Trail TH
Year round access

This trailhead is also located on the south side of the road. It is very distinct with a large parking area. There is some private property located near the trailhead for the first 3/4 mile, so please adhere to the trail.
It is roughly 8.5 miles (RT) with a starting elevation of 6,600ft and an ending elevation of 9233ft.
From the trail-head to the Glen Haven trail junction (coming from the west), it is about 1.7 miles. Camping is scarce and hard to find along this trail due to the ravine and thick Lodgepole Pine forest.

The trail starts off by heading straight up a ravine/gully and gains altitude quickly. It levels out sporadically as it switchbacks up the ridge. The private homes located on the other side of CR43 are in view for most of the time until you breach the ridge.
The trail continues to meander through forest and follows a creek for a good portion of the way until it meets up with the Glen Haven Trail.
From here, it is still about a half mile (left) to the intersection with the Garden Gate Trail.
There is a small old cabin at this junction located just a hairs-width off the trail.
This particular trail segment is good to run.

Glen Haven Trailhead #931-2

Glen Haven
Might need to do some creative parking!

This trailhead is located in the town of Glen Haven. Parking here is tight and constricted at best. Use the small post office located just up the road or, there is a small dirt clearing just opposite the access road one can park. However, there is only enough room to park say, three vehicles. There is a dirt road/driveway leading southeast just past the red horse stable. There is also a brown sign reading, "Crosier Mountain TH". The trail starts about 150-200ft up this dirt road and is marked.

From here, it is about 8 miles (RT) with a starting elevation of 7,700 and ending once again, at 9,233ft. There are more choices to camp along this particular trail.
There is also the option to purchase food and drink at the General Store in town in case you've forgotten yours.
Estes Park is only a few more miles up Devils Gulch where it turns into MacGregor Avenue .

The trail attains altitude at a modest pace. Probably the easiest trail of the three. It partly follows a creek, meanders through the forest, hits 'bald' spots and navigates around Piper meadows (which I believe is privately owned by the H-Bar-G ranch). At the top of Piper Meadows, the trail forks to the left, which continues to Crosier or right which access the ranch. From this vantage point, it is only about 15 minutes to the trail junction with Rainbow Trail.

Getting There

The Main Crosier  Mountain Trail
Crosier Mountain Trail
As said, all three trailheads are located directly on CR43 between Drake and Glen Haven. Travel 7-8 miles past the 'Dam Store' on U.S. Highway 34 up Big Thompson Canyon west of Loveland to the small town of Drake. Turn right onto County Road 43 (Glen Haven Road). Without making directions too complicated since there are three access points:
Garden Gate TrailheadRainbow/Gravel Pit TrailheadGlen Haven Trailhead
11.0 miles from Estes Park7.4 miles from Estes Park6.3 miles from Estes Park
15.2 miles from Loveland18.2 miles from Loveland19.8 miles from Loveland


JunctionHalf-way There!
The best spots for camping on Crosier Mountain are to be found in the meadows located on the Garden Gate trail segment. Finding flat ground is almost guaranteed. But again, the issue with water is going to be a tough sell. Best to plan ahead and bring plenty with you.

Camping is discouraged at the trailhead (car camping though noisy, should be fine) and the usual National Forest guidelines of staying at least 100 feet away from water sources while camping are expected and encouraged.
And remember, Leave No Trace!

Campfires are permitted but again, just remember to put out the embers.

Additions and CorrectionsPost an Addition or Correction

Viewing: 1-3 of 3

xdt - May 26, 2013 8:30 pm - Voted 7/10

stuff i noticed

1) I have the Garden Gate TH 2.2 miles (not 2.7) from Drake 2) I'm pretty sure the blue trail in the panorama is the Gravel Pit route, not Garden Gate (GG Trail would be entirely occluded by the distant ridge on Crosier as viewed from Triangle Mtn)


Kiefer - Jun 3, 2013 1:07 pm - Hasn't voted


for catching the discrepancies. I fixed the picture or at least, made a note. As far as the mileage, I'll drive it again in a few days & get another total.

Sarah Simon

Sarah Simon - Jun 11, 2013 4:22 pm - Voted 10/10

Glen Haven Trailhead #931-2

There is parking for up to 8 vehicles across the road from this trailhead. Simple roadside parallel parking, but space for several vehicles. =) Sarah

Viewing: 1-3 of 3



Children refers to the set of objects that logically fall under a given object. For example, the Aconcagua mountain page is a child of the 'Aconcagua Group' and the 'Seven Summits.' The Aconcagua mountain itself has many routes, photos, and trip reports as children.