Crestline Sidewinder Loop Trail is actually a 9.6 mile moderately trafficked loop trail located near Boise, Idaho that features beautiful wild flowers and it is rated as moderate. The trail offers numerous activity options and is best used from March until October. Dogs can also be able to utilize this trail.
Crestline is one of my favorite loops, that i recently realized joins using the riparian trail which leads up in to the Upper Hull’s Gulch area. It’s a beautiful hike, just bring lots of water during the summer time and watch out for cyclists!
Good overall hike however, not a real great area for birding. Not many varieties and appearances on the day I was there. This trail seems better for mountain biking than hiking and that’s mostly what you’ll see. It really is a good length and relatively pretty if you like desert scenery. There is a tiny forested area at the beginning. The task level is probably near easy however with a route for long enough to deter small kids. The inclines are incredibly mild compared to other moderate rated desert trails like Harrison Hollows.
Great trail system with access from several different starting points. Highly recommend. Beneficial to all ability levels, based on your options obviously. Best trail for dog owners! The Military Reserve posseses an off leash dog park and a lot trails are off leash. Take advantage of the wildflowers in April & May! Among the need to do trails in the Boise Foothills, Sidewinder is a nice climb, great view, as well as a fun downhill. A little crowded on weekends.
Here are some recommendations for dynamite hikes, trail-runs and bike rides within the Boise foothills. The ideas come from my trail guides, Mountain Biking in Boise and Boise Trail Guide. It’s essential to focus on the mid- to reduce foothills trails during the early spring. Top of the trails as well as the Boise Ridge Road remain snow-bound. The trails inside the mid- to upper foothills, such as the Watchman Trail, are still wet and greasy in some places, so it’s best to wait so they can dry completely. Before you decide to hit the trails, take a look at current trail conditions on the Ridge to Rivers website.
Military Reserve Short Loop – 2 miles, under an hour hiking time. Easy, with a short hill. Here’s a shorter tour for families and small kids. Start in the Toll Road Trailhead from Mountain Cove Road. Rise the Toll Road Trail under a mile to some junction. Go left and ascend to the initial summit of Military Ridge. Turn left and descend on a singletrack trail leading to Freestone Creek Trail over from the dirt road. Turn left on Freestone and go back 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 Way to a nice paved parking area and restroom next to a large water tank. Take the Valley View Trail #111 to the correct, and then take the first left on Trail #110 to Phlox Trail #112, turn left and go back to the trailhead for a one-mile short loop. Now go back on Valley View, whilst keeping going out to the actual “valley view” viewpoint provided by the trail, hanging higher than the Boise Valley. The trail loops around to fknihd and returns to the trailhead.
Cross-Foothills Ride (Intermediate; strenuous in places) – 10 miles. 2 hours riding time. Strong intermediate. Today, I rode up to 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 over 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 hardest 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 a few uphill sections in between. Fun ride! Hardy mountain trail runners would enjoy that route also.
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 for the Hulls Gulch Junction. Turn left and descend on Hulls Gulch. It’s rocky and uneven in places. Whenever you reach the 8th Street trailhead from the Foothills Learning Center, turn right, cross 8th Street, and complete 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 would be to start at Camelsback Park, climb Hulls to the Crestline junction, ride Crestline back to the Sidewinder trailhead, climb Sidewinder, fall Trail #4 for the Hulls Crestline junction, and descend Hulls and Chickadee Ridge returning to Camelsback.