Kirk Hill Natural Area sits on South 19th Avenue about ten minutes from downtown Bozeman. The trail system has three numbered loops that branch off a main stem, all climbing through dense old-growth Douglas fir and aspen forest. Most people combine the main stem with one or two of the loops for a hike in the 1.5 to 2-plus mile range. On the trailhead sign, you will see the word "moderate," and that is accurate, but it undersells the grade. The trail gains elevation starting immediately at the gate with no warm-up, and the first junction comes quickly. Guidebooks sometimes call this one quick or easy, and technically it is short, but if you show up with a young kid expecting a flat nature walk, the first ten minutes will correct that assumption fast.
Loop 3 is the lowest and shortest option, good for a quick 30-minute circuit if that is all you have. Loop 2 is the longest and most secluded, winding through a drainage and into denser forest where hikers have built stick lean-tos in the trees over the years. Loop 1 takes you to the highest point on the property and the bench overlooking the Gallatin Valley. You can do any one of them on their own, or string all three together. Going clockwise on whichever loop you choose gives you a more gradual climb. Counterclockwise is steeper and more direct.
What the trail does exceptionally well is shade. The Douglas fir and spruce grow thick enough that the trail stays noticeably cooler than the exposed ridgelines around town, which makes Kirk Hill one of the better options on a hot Bozeman summer day. When the M trail is a dusty, sun-baked slog and Drinking Horse is roasting on its west-facing slope, the canopy here holds the temperature down and muffles the noise from 19th Avenue enough that the trail feels genuinely quiet. There is also a strict no-bikes rule, so runners and hikers can put their heads down and push the pace without checking over their shoulders for cyclists.
There is no lake or waterfall on any of the loops, just forest, stairs, and a view from a bench at the top of Loop 1. For a quick workout, a shaded summer escape, or an older kid who wants to feel like they actually climbed something, the trail delivers.
From downtown Bozeman, head south on South 19th Avenue. Drive about 7 miles, staying on South 19th as it heads out of town. The Kirk Hill Natural Area parking lot will be on your left. Watch for the large blue Kirk Hill Natural Area sign at the entrance to the gravel lot. You can't miss it.
Guidebooks sometimes rate Kirk Hill as easy based on the short distance, but the trail climbs nearly 650 feet in well under a mile, and the grade starts immediately at the trailhead gate. There is nothing technical here, no scrambling, no route-finding, but the incline is sustained from the start. The shaded, north-facing terrain also holds mud well into spring and ice through most of winter, which can make the steep sections genuinely treacherous. Microspikes are not optional from December through March.
The trail has three numbered loops that connect to a shared main stem. Loop 3 is the shortest at 0.4 miles, Loop 1 (the overlook) is 0.5 miles, and Loop 2 is the longest at 0.9 miles. Doing the main stem plus one loop lands you in the 1.4 to 1.6 mile range. String all three together and you are looking at 2-plus miles. Most people doing a single loop finish in 45 minutes to an hour. Plan for 90 minutes if you want to do all three or take a break at the bench.
The trail starts in a marshy meadow near the parking lot and climbs to a viewpoint bench overlooking the Gallatin Valley. Most of the elevation comes in the first half of the loop on the steep section that cuts up through the Douglas fir forest. The descent brings you back through the aspen grove and over the wooden boardwalk at the base.
There is no lake or waterfall here, and that is worth knowing before you go. Loop 1 ends at a bench with a good view of the Gallatin Valley. Loop 2 winds through denser forest and past stick lean-tos that hikers have built in the trees over the years, which kids tend to enjoy. Neither loop has a dramatic payoff, but the forest itself is the point. For a quick workout or a shaded summer escape, the trail delivers. As a destination hike, it is not the right choice.
There is no reliable water on the trail. A small creek runs through the marshy meadow at the base with a footbridge crossing near the start, but bring what you need before you leave the parking lot. There are no water sources once you start climbing.
The bench on Loop 1 is a good spot for a snack with a valley view. You do not need much food for a hike this short, but it is a good excuse to pack something if you have kids who need a reward at the top.
Summer and fall conditions are excellent. The trail is well-marked and well-built, with wooden boardwalks through the wet lower section, stairs with handrails on the steeper upper sections, and benches placed along the route. Spring is a different story. The thick canopy means the trail gets very little direct sunlight, so it holds mud much longer than exposed trails around town and is one of the last in Bozeman to dry out after snowmelt. In winter, the steep sections become ice chutes. Microspikes are mandatory from December through March, and even then, take care on the descent.
Dogs are welcome and the shaded trail is easy on them in summer, but they must be on leash at all times. The signs at the trailhead are serious about it. There is no water on the trail once you leave the base, so let your dog drink from the creek before you start. There are no waste bag dispensers at the trailhead, so pack your own.
Paved road the entire way. South 19th Avenue is well-maintained and you will be at the trailhead in about 12 minutes from downtown Bozeman.
The trailhead kiosk has a good trail map with points of interest marked, which is enough to navigate the loop. If you plan to connect to USFS Trail #428 and continue into the Gallatin National Forest, pick up Beartooth Publishing's Bozeman Area map before you go.
The gravel parking lot is large enough that you should have no trouble finding a spot, even on weekends. Picnic tables near the lot are a nice spot to eat before or after the hike.
No bathroom at the trailhead. Take care of business before you leave Bozeman.
Kirk Hill is quieter than the M and Drinking Horse on most days, which is part of the appeal. You will see other hikers and plenty of dogs, but it is not the kind of trail where you are constantly stepping aside. Mountain bikes are prohibited, so it is hikers and runners only.
The dense canopy keeps the trail noticeably cooler than the surrounding valley, especially in the morning and on the upper section. Bring a layer even in summer. In spring and fall, dress for colder conditions than you think you need. Microspikes are not optional in winter.
Footwear: Trail Runners
Not usually a problem. The marshy lower section can have mosquitoes in early summer, so bring bug spray from June through July just in case.
The trail is almost entirely shaded by old-growth Douglas fir and aspen. This is the defining feature of the hike and the main reason to choose it on a hot day. In spring and early winter, the lack of sun is also the reason to stay away.
You will have full cell service for the entire hike. The trailhead is less than 8 miles from downtown Bozeman.
Day hike only. No camping is allowed in the Kirk Hill Natural Area.
USFS Trail #428 (Moser Trail)
The Kirk Hill trail network connects to Custer Gallatin National Forest via Trail #428, which opens up substantially more mileage and elevation gain for those who want a longer day. The full connector is a point-to-point route that gains over 1,700 feet before ending at a Forest Service road.
Plug 1.6 miles and 650 feet of elevation gain into our free hiking time calculator for a personalized estimate.