18 Mountain Bike Trails near Spencer, ID 83446
first prev 1 next lastShowing Mountain Bike Trails within 50 miles Distance miles of Spencer, ID 83446, USA City, Zip, or Address
Webber Creek
Dubois, Idaho
24.8 miles WA dispersed recreation area at 7,000 feet elevation with a trailhead, vault toilet, and the Webber Creek Trail heading west toward Scott Peak — great for hiking, fishing, horseback riding, and mountain biking.
Backpack, Camp, Hike, Horseback, Hot Springs, Mountain Bike
Howard Creek Trail
Island Park, Idaho
26.7 miles EA very primitive trail following Howard Creek upstream through a low canyon near Island Park — remote, quiet, and best used as a connector to the Continental Divide Trail.
Mountain Bike
Big Bend Ridge Trail
Ashton, Idaho
34.3 miles EA smooth, swooping singletrack network near Driggs, Idaho with low elevation change, multiple route options, and a long riding season — one of the first trails to dry out each spring.
Mountain Bike 0.6-4.7 mi
Harriman State Park
Island Park, Idaho
36.0 miles EAn 11,000-acre wildlife refuge 38 miles from Yellowstone along Henry's Fork — world-class fly-fishing, hiking among wildflowers and wildlife, plus 24 miles of Nordic ski trails in winter.
Cross-country Ski, Hike, Horseback, Mountain Bike, Snowshoe
Sawtell Peak Trail
Island Park, Idaho
38.9 miles EA trail at Island Park, Idaho offering great views of the valley floor, mountain peaks, and wildlife.
Mountain Bike 2.9 mi
Box Canyon Trail
Island Park, Idaho
39.4 miles EA scenic 3-mile riverside singletrack along Henry's Fork in Box Canyon — open to OHVs under 50 inches wide, with river views most of the trail and great trout fishing.
Hike, Mountain Bike 0.2-0.5 mi
Eagle Park
Rexburg, Idaho
41.1 miles SEA cottonwood forest park inside Rexburg city limits with campsites, fishing, a dog park, mountain biking on easy and moderate loops, and rock-throwing by the river.
Camp, Hike, Mountain Bike, Sled
Coffee Pot Rapids Trail
Island Park, Idaho
41.4 miles EA 2.2-mile non-motorized trail following the Henry's Fork of the Snake River, where the water shifts from placid stream to raging rapids — lined with wildflowers and diverse shrubs.
Mountain Bike 0.4-0.7 mi
Rexburg Bike Park
Rexburg, Idaho
41.6 miles SEA beginner-friendly bike park behind Rexburg Rapids with mounts in small, medium, and large sizes — and the same hills turn into great sledding terrain when snow arrives in winter.
Mountain Bike, Sled 29.6 mi
Ashton to Tetonia Trail
Ashton, Idaho
42.2 miles SEA 29.6-mile multi-use trail along a converted Union Pacific Railroad right-of-way from Ashton to Tetonia — open to bikes, ATVs, snowmobiles, runners, skiers, and horses with 787 ft of elevation gain southbound.
Mountain Bike 0.1-1.3 mi
Hidden Valley Trails
Rexburg, Idaho
42.7 miles SEA well-signed network of downhill singletrack flows around the edges of Rexburg, with trails like Flow State, Drop Zone, and Lil' Sendy for every ability level.
Hike, Mountain Bike
Divide Road
Island Park, Idaho
42.8 miles NEA double-track dirt road along the Continental Divide between Montana and Idaho with gorgeous views of the Centennial Mountains, Henry's Lake, and the Tetons — and plenty of deer, elk, and occasional bears.
Mountain Bike
Boundary Trail
Island Park, Idaho
44.8 miles EA 37-mile loop in Idaho accessible from multiple trailheads, open to stock, mountain bikes, motorcycles, and ATVs — with steep, rocky sections not suited for beginners.
Mountain Bike
Mile Creek Trail
45.7 miles NE
A 14-mile out-and-back on the Continental Divide Trail climbing to 10,000 feet through switchbacks and loose rocks, with stunning mountain scenery — carry bear spray and don't ride alone.
Mountain Bike 3.2-47.0 mi
Yellowstone Branch Line Trail
Ashton, Idaho
46.5 miles EA 39-mile trail from Warm River to the Montana border — open to backpackers, hikers, mountain bikers, horseback riders, and ATVs through the Targhee National Forest.
Backpack, Cross-country Ski, Hike, Horseback, Mountain Bike
Flat Canyon Trail
Island Park, Idaho
47.6 miles EA non-motorized trail in Island Park, Idaho — a peaceful ride through the forest with no engines to share the trail with.
Mountain Bike
Targhee Creek Trail
Island Park, Idaho
48.0 miles NEFive alpine lakes, wildflowers, and sweeping mountain and valley views — plus grizzly bear habitat that makes wildlife watching very real on this Island Park trail.
Mountain Bike
Sheep Creek Trail
48.2 miles NE
A gradual singletrack climb through brushy lower slopes opening to beautiful alpine country — a cold lake awaits at the top, and grizzly bears share the trail, so don't ride alone.
Mountain Bike
