Pets allowed
Elevation Gain
650.00 ft (198.12 m)
Trail type
5.30 mi (8.53 km)
Please respect the outdoors by practicing Leave No Trace. Learn more about how to apply the principles of Leave No Trace on your next outdoor adventure here.

Part of the extensive trail system in the Boise Foothills, this loop is but one of many possible running or hiking routes near downtown. Because it’s so close to the city and nice views, it’s a very popular place for outdoor exercise. Trails are shared by hikers, runners, and mountain bikers alike.

This particular loop is perhaps best for trail running than for anything else, because of the nature of the trails. It’s a gradual ascent up a secluded canyon, followed by panoramic views from a ridgeline, then a speedy descent back to the parking lot, all on a firm and mostly smooth natural surface. In a clockwise direction, the trails in the loop are: Lower Hulls Gulch #29, Crestline #28, and Kestrel #39A. You could just as well go in the opposite direction, but that would make for a tougher initial climb on Kestrel and a rocky descent on Lower Hulls Gulch.

Starting with Lower Hulls Gulch is a steady uphill through a canyon, where views are limited, but the trail is varied enough to keep things interesting. A few sections have rock steps and ledges, and some short sections are pretty steep, but for the most part it’s packed dirt and sand with a gentle gradient. Crestline is all smooth and mostly level trail, traversing grassy hillsides, overlooking downtown Boise and the rest of Treasure Valley. Almost all the downhill is on Kestrel, which returns to the Hulls Gulch trailhead.

Several other trails connect to these, making many possible variations for distance and difficulty. They are open year round, but winter can turn them into skiing and snowshoe terrain. During snowmelt or after heavy rain, trails should be avoided because they are easily damaged when muddy. Remember that these are high-use trails, so it’s important to share the space and take care of it for all to enjoy.

Logistics + Planning

Preferable season(s)




Parking Pass


Open Year-round



Trail running. City views. Close to town.


Limited scenery. Lots of mountain bikers.

Trailhead Elevation

2,900.00 ft (883.92 m)

Highest point

3,550.00 ft (1,082.04 m)


Family friendly
Vault toilet
Big vistas

Typically multi-day


Suitable for


Permit required




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