Best mountain peaks in Gallatin County are found within a diverse and scenic mountain landscape, featuring 121 named mountains across the Gallatin, Bridger, and Spanish Peaks of the Madison Range. This region offers a wealth of outdoor recreational opportunities. The peaks provide varied terrain, from accessible routes to challenging climbs, attracting hikers, backpackers, and climbers. Gallatin County's mountains are also home to abundant wildlife, including mountain goats, bighorn sheep, elk, and grizzly bears.
Last updated: April 26, 2026
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Highlight • Summit
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Great nontechnical hike to the summit of one of Bozeman's iconic southern peaks. A few stream crossings for filtration if you want to go light. Some steeper grades just up from the lake, but mostly very manageable grades, gorgeous views! Mountain goats were seen as well. Highly recommended.
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The 360 degree views experienced while traversing the ~3 miles surrounding the hill called Lionhead are absolutely unreal. Anywhere your gaze falls, be it up to Lionhead or down to Hebgen Lake, you are sure to be left humbled and in awe!!
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The final stretch to the summit can be a slog and may end up being more of a hike than a bike, however, the views more than make up for the effort. Also, the fire lookout at the summit is available for overnights so check recreation.gov if you plan to do some bikepacking.
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History Rock Trail ends at a wide open meadow with views of the Hyalite summits. On a clear day, you can see over to the 10,000-foot Mount Blackmore. The trail back heads towards Hyalite Reservoir with views of Palisade Mountain.
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Chestnut Mountain tops out at 7,627 feet. It has great views of Mount Ellis and other peaks in Custer Gallatin National Forest, and you can sometimes even see down to Mystic Lake. On the other side of the highway, you have open views of the Bridger Peaks and Crazy Mountains.
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Saddle Peak (9,159 feet) is one of the sharper peaks you'll find on Bridger Ridge. This distinctive mountain has two high points (but the highest is obvious) that create a sort of "saddle" on the summit. The northern ridge up to Saddle Peak can be one of the most trying climbs along the entire ridge.
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At 8,914 feet, Baldy Mountain is considered the first notable high point on Bridger Ridge when starting from the south (aka, from the Bozeman side). You have views of multiple mountain ranges from up on the ridge (including the Crazies, Absoroka-Beartooth, and Gallatin Range), and you can tackle this peak from multiple trailheads. This rocky summit is one of the most popular on the ridge.
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The spur that leads to the summit of Mt. Blackmore will steal your breath in more than one way. Be ready to earn the summit that stands at just over 10,000 feet. As always, stay aware of changes in weather when climbing exposed peaks, but also keep an eye out for a stunning range of wildflowers while you climb.
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For breathtaking panoramic views, consider hiking to Baldy Mountain Summit on the Bridger Ridge, which provides vistas of the Crazies, Absaroka-Beartooth, and Gallatin Ranges. Mount Blackmore also offers stunning views of the Gallatin Range, while Storm Castle provides a superb panorama of the surrounding landscape from its prominent position above Gallatin Canyon.
Yes, several peaks offer a significant challenge. Sacagawea Peak, the tallest in the Bridger Range, involves a challenging 5.2-mile hike with steep terrain. Gallatin Peak in the Spanish Peaks is known for its rugged terrain and steep couloirs, attracting experienced climbers and backcountry skiers. Saddle Peak on the Bridger Ridge also presents a particularly trying, yet rewarding, climb along its northern ridge.
Wilson Peak stands as the highest mountain in Gallatin County, reaching an elevation of 10,696 feet (3,260 m).
Storm Castle is an excellent choice for a day hike due to its moderate 5.2-mile out-and-back trail and easy accessibility from Bozeman. Another popular option is Drinking Horse Mountain, which offers great views of Gallatin Valley and Bridger Canyon with benches along the way.
The mountains in Gallatin County are rich in wildlife. Hikers often spot mountain goats, bighorn sheep, and elk. The region is also home to larger mammals such as grizzly bears, black bears, mountain lions, and moose, particularly in areas like the Custer Gallatin National Forest and around Gallatin Peak.
Absolutely. Mount Blackmore offers an intermediate trail to its summit, with an option to stop at Blackmore Lake for a less strenuous outing. Storm Castle is also considered an intermediate hike. Additionally, Garnet Mountain, with its fire lookout tower, provides an intermediate challenge and splendid views.
The best time to hike the mountain peaks in Gallatin County is generally from June through October. During late spring, some higher elevation trails, like those on Garnet Mountain, can still hold snow. Always be aware of changing weather conditions, especially when climbing exposed peaks.
Yes, Sacagawea Peak offers stunning views of Fairy Lake. Garnet Mountain is unique for its fire lookout tower at the summit. Chestnut Mountain provides glimpses of Mystic Lake on clear days, alongside views of the Bridger Peaks and Crazy Mountains.
Beyond hiking, the Custer Gallatin National Forest, which encompasses many of these peaks, is a hub for diverse recreational activities. You can find opportunities for biking, hunting, horseback riding, backcountry skiing, mountaineering, and rock climbing. For specific routes, explore the Hiking in Gallatin County, Road Cycling Routes in Gallatin County, and MTB Trails in Gallatin County guides.
Visitors frequently praise the incredible views and the rewarding sense of accomplishment after reaching a summit. For example, the non-technical hike to Mount Blackmore is highly recommended for its gorgeous views and the chance to spot mountain goats. The diverse range of summits, viewpoints, and challenging trails ensures there's something for every outdoor enthusiast.
Sacagawea Peak is the most prominent peak in Gallatin County and the tallest in the Bridger Range. Saddle Peak is distinctive for its two high points that form a 'saddle' at the summit, making it easily recognizable on the Bridger Ridge.
Yes, the region offers trails suitable for both hiking and mountain biking. For instance, the MTB Trails in Gallatin County guide lists routes like the Garnet Mountain Loop and Blackmore Trail, which are popular for both activities, though some sections may be more challenging for biking.
See even more amazing summits in Gallatin County with these guides:
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