Sky Rim - West
ElevationAscent: 4,313' 1,315 m
Descent: -4,313' -1,315 m
High: 9,906' 3,019 m
Low: 6,750' 2,057 m
GradeAvg Grade: 8% (5°)
Max Grade: 51% (27°)
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“The Sky Rim (west 1/2) - perhaps Yellowstone’s best mountain trail - is like running across the sky!”— Tom Carter
From the Big Horn Peak you backtrack .3 miles to a trail junction with the Black Butte Trail, turn left and follow it as it drops 2400 feet in 4 miles. Then make a right on the Black Butte-Dailey Creek Cutoff Trail and follow it back to the Dailey Creek Trail and out.
Lightning is a serious concern on the Sky Rim from Dailey Pass to Big Horn Peak. The trail is highly exposed, with few opportunities to safely run down from the ridge. Get an early start; you should try to be past this section of the run and coming down the mountain by early afternoon. Exposure to wind, rain and/or cold temperatures can result in hypothermia. Bring warm clothing, stay dry and protect yourself from strong winds.
Finally, there is no reliable water (only patches of snow that often melt by late July) for almost 10 miles from below Dailey Pass, on the way up, to Black Butte Creek, on the way down. Plan accordingly.
At the 3.6-mile mark, the trail enters the trees and begins a 900-foot climb to Dailey Pass, reached at 5 miles. The pass straddles the boundary between Yellowstone National Park and Custer Gallatin National Forest. Dailey Pass is a major 4-way backcountry intersection. A left turn follows the final mile of the Sky Rim Trail to a junction with NFS Trail #100. Straight ahead is NFS Dailey Pass Trail NFS #57. Our trail turns right and follows the Sky Rim Trail along the narrow ridge and climbs another 600 feet to a junction with the Tom Minor Divide Trail at 5.7 miles. From there, the views in every direction are spectacular and they stay that way for miles and miles.
Turn right and head SE along the flower-spangled ridge. This ridge is the irregular shaped boundary to Yellowstone. At one time, the ridge lay outside the park. In the early 1920s plans were made to dramatically expand Yellowstone by annexing among others: Jackson Hole to the south; the Wapiti Valley to the east; and even the snowy Beartooth Mountains. Of course, these high hopes never completely materialized, but out of them came Grand Teton National Park and several Yellowstone boundary changes. In 1927 this northwest corner of the park was expanded to include the Gallatin Petrified Forest and a winter grazing grounds for a large elk herd.
Beginning around the 6-mile mark, look for short side trails to the right that lead to nice views and a chance to see fossilized trees (part of the Gallatin Petrified Forest). As the trail continues, it rolls up and down (mostly up) and has three big hills to climb (beginning at 6.9, 8.3, & 9.8 miles) on the way to Big Horn Peak. Just after the second climb the trail levels and disappears into a big meadow. Continue south and watch for trail markers on the far side of the meadow. The trail also is hard to find as you steeply climb the third hill; just keep climbing and you’ll find it.
At 10.4 miles (the top of the third hill), the Black Butte Trail junction is passed. This is our route down, but the best part of the run is just ahead. Continue .3 miles to the top of Big Horn Peak (9930'). This is the real crux of the trail, as it winds through a rocky section with precipitous drop-offs and awesome views. There is no more spectacular scenery anywhere in Yellowstone!
From Big Horn Peak, it’s possible the see Sheep Mountain (10095') the highest mountain in the area and which is conspicuously topped by a huge metal screen called a "microflector." If you continued on the Sky Rim, you would end there. Once you have soaked-up views on Big Horn Peak, backtrack .3 miles to the Black Butte Trail. Turn left and follow the difficult to see trail down the sloping meadow. Keep the cliffs on your left and you'll soon pick up the trail. The Black Butte Trail drops 2400 feet in the next 4 miles. As you drop, keep an eye out to the north on King Butte's gray, gnarly face for brown, petrified trees.
At the 15.1-mile mark (including the side trip to Big Horn Peak) the Black Butte-Dailey Creek Cutoff Trail is reached. Turn right and follow the Cutoff Trail up a steady 330-foot climb, the top of which is reached at 15.7 miles. From there, the trail passes the Dailey Patrol Cabin and drops 700 feet to rejoin the Dailey Creek Trail at 17.4. Turn left and run the last 1.9 miles back to the Dailey Creek trailhead.
Thanks to guidebook author, Tom Carter, for sharing this trail description. To learn more about visiting Yellowstone, check out his book, Day Hiking Yellowstone.
You may also see mountain goats. Though not native to the Greater Yellowstone Ecosystem, these fascinating animals were introduced in southwest Montana in the 1940s and have migrated into the park.
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