Crestline Sidewinder Loop Trail is a 9.6 mile moderately trafficked loop trail located near Boise, Idaho that features beautiful wild flowers and is rated as moderate. The trail offers numerous activity options and it is best used from March until October. Dogs are also able to use this trail.
Crestline is one of my favorite loops, that i recently realized joins using the riparian trail leading up into the Upper Hull’s Gulch area. It’s an attractive hike, just bring plenty of water in the summer and look out for cyclists!
Good overall hike however, not really a great area for birding. Very few varieties and appearances on the day I had been there. This trail seems better for biking than hiking and that’s mostly what you’ll see. This is a good length and relatively pretty if you like desert scenery. You will find a tiny forested area at the start. The process level may well be near easy though with a route long enough to deter small kids. The inclines are extremely mild compared to other moderate rated desert trails like Harrison Hollows.
Great trail system with access from a number of different starting points. Strongly recommend. Great for all ability levels, depending on your alternatives obviously. Best trail for dog lovers! The Military Reserve comes with an off leash dog park and many trails are off leash. Take advantage of the wildflowers in April & May! Among the need to do trails within the Boise Foothills, Sidewinder is actually a nice climb, great view, as well as a fun downhill. Somewhat crowded on weekends.
Here are a few tips for dynamite hikes, trail-runs and bike rides within the Boise foothills. The guidelines originate from my trail guides, Mountain Biking in Boise and Boise Trail Guide. It’s essential to focus on the mid- to lower foothills trails in the early spring. The upper trails and the Boise Ridge Road continue to be snow-bound. The trails in the mid- to upper foothills, including the Watchman Trail, remain wet and greasy in a few places, so it’s best to wait to allow them to dry completely. Prior to deciding to hit the trails, check out current trail conditions on the Ridge to Rivers website.
Military Reserve Short Loop – 2 miles, lower than an hour hiking time. Easy, using a short hill. Here’s a shorter tour for families and small kids. Start in the Toll Road Trailhead from Mountain Cove Road. Go up the Toll Road Trail less than a mile to your junction. Go left and climb up to the initial summit of Military Ridge. Turn left and descend over a singletrack trail ultimately causing Freestone Creek Trail over from the dirt road. Turn left on Freestone and return to the trailhead.
Seaman’s Gulch Double Loop – 3 miles total. 1 hours hiking time; 30-45 minutes running time; half an hour riding time. Easy. Take Hill Road west in Boise for the Seaman’s Gulch/Hidden Springs right-hand turnoff. Go right and follow Seaman’s Gulch Road to a great paved parking area and restroom next to a large water tank. Take the Valley View Trail #111 to the correct, then take the first left on Trail #110 to Phlox Trail #112, turn left and return to the trailhead for any one-mile short loop. Now go back on Valley View, whilst keeping going out to the true “valley view” viewpoint supplied by the trail, hanging higher than the Boise Valley. The trail loops around to fknihd and returns towards the trailhead.
Cross-Foothills Ride (Intermediate; strenuous in places) – 10 miles. 2 hours riding time. Strong intermediate. Today, I rode as much as the Corrals Trail (trailhead is 1.8 miles north of Curling Drive on Bogus Basin Road), rode Corrals to Corrals Summit, then rode downhill on Corrals and Trail #1 to Hulls Gulch. I took Crestline Sidewinder Loop Trail to Military Reserve, and dropped out on the Freestone Creek Trail in Military Reserve near Fort Boise. The toughest portion of the ride is climbing to Corrals Summit (3 miles uphill from trailhead, 1,200 feet of vertical gain). Then it’s mostly downhill to Military Reserve, with just a few uphill sections between. Fun ride! Hardy mountain trail runners would enjoy that route too.
Crestline-Hulls Loop – 7.25 miles. Moderate. 2.5 hours hiking time; 1.5 hours running time; 1.25 hours riding time. Intermediate. Start from Camelsback Park in Boise on N. 13th. Discover the trailhead behind the tennis courts. Climb on Owls Roost and Kestrel to Crestline. Follow Crestline towards the Hulls Gulch Junction. Turn left and descend on Hulls Gulch. It’s rocky and uneven in places. When you reach the 8th Street trailhead from the Foothills Learning Center, turn right, cross 8th Street, and finish the ride on Red Fox Trail, which leads you returning to Camelsback Park.
Variations on Crestline-Hulls Loop – Advanced. Ride the loop in reverse, or climb Hulls. It’s difficult, but fun! Another favorite of mine is to start at Camelsback Park, climb Hulls for the Crestline junction, ride Crestline to the Sidewinder trailhead, climb Sidewinder, come down Trail #4 for the Hulls Crestline junction, and descend Hulls and Chickadee Ridge back to Camelsback.