12,470 Trails in United States

Trail Name Difficulty Length (mi) Rating City
Four Mile Trail / #774  difficulty 8.0 Saguache
Four Mile Ridge Trail #1445  difficulty 4.57 Chelan
Four Mile Creek Greenway Easiest difficulty 1.7 *** Charlotte
Four Lakes Tahuya Trails  difficulty 8.0 Tahuya
Four Gorge Ext (Carvin’s Cove Trail system) Intermediate difficulty 1.0 ***** Roanoke
Four Gorge (Carvin’s Cove Trail system) Intermediate difficulty 3.0 **** Roanoke
Four Freedoms Trail Easiest difficulty 13.0 ***** Madison
Fountainhead Regional Park Intermediate difficulty 13.0 ***** Fairfax
Fountain Creek Regional Trail  difficulty 10.7 Colorado Springs
Founders (Elk Meadow)  difficulty 1.0 Evergreen
Fosters Hammock Intermediate difficulty 8.0 **** White Springs
Fossil Trail Advanced difficulty 5.0 ** Carrollton
Fossil Ridge Trail / #431 / #478 (Fossil Ridge Recreation Management Area South)  difficulty 10.0 Sargents
Fossil Ridge Recreation Management Area South  difficulty 25.0 Sargents
Fossil Flats (Devil’s Den State Park) Intermediate difficulty 5 **** West Fork
Fossil Bypass (Fossil Ridge Recreation Management Area South)  difficulty 1.0 Sargents
Fortner Street side Trail B (Beaver Creek / Forever Wild Trails)  difficulty 5.0 Dothan
Fort Yargo State Park Intermediate difficulty 18 **** Winder
Fort Worden State Park  difficulty 8.3 Port Townsend
Fort Walker  difficulty 2.0 Hilton Head
Fort Valley Trail System Advanced difficulty 6.0 ***** Flagstaff
Fort Steilacoom Park Beginner difficulty 10.0 ** Lakewood
Fort Stanton-Snowy River Cave National Conservation Area  difficulty 93.0 *** Capitan
Fort Rucker Intermediate difficulty 11.0 **** Fort Rucker
Fort Rock Advanced difficulty 0.0 **** Exeter
Fort Rock  difficulty 7.0 Littleton
Fort Richardson State Park & Historic Site / Lost Creek Reservoir State Trailway  difficulty 10.0 Jacksboro
Fort Pierce Mountain Bike Trail Intermediate difficulty 6.0 **** Ft. Pierce
Fort Pierce Mountain Bike Trail (Fort Pierce Mountain Bike Trail)  difficulty 5.0 Fort Pierce
Fort Ord Public Lands Intermediate difficulty 86.0 **** Monterey
Fort Mountain State Park Intermediate difficulty 10.0 *** Chatsworth
Fort Lincoln Trail Beginner difficulty 7.0 **** Mandan
Fort Lewis Mountain Trails Beginner difficulty 12.0 **** Roanoke
Fort Henry Trails  difficulty 20.0 Dover
Fort Harrison State Park Intermediate difficulty 8.0 **** Indianapolis
Fort Graitot Wetlands  difficulty 6.0 Port Huron
Fort George Easiest difficulty 3.0 *** Jacksonville
Fort Ebey St Park Intermediate difficulty 25.0 **** Coupville/whidbey Is
Fort Duffield Advanced difficulty 10 **** Louisville
Fort Defiance Intermediate difficulty 3 **** Estherville
Fort Custer Recreation Area Intermediate difficulty 21.0 ***** Augusta
Fort Clinch Beginner difficulty 14.0 ***** FERNANDINA BEACH
Fort Circle Trail / Fort Dupont Park Beginner difficulty 8.0 *** Washington
Fort Chaffee Tank / Humvee Trails Beginner difficulty 12.0 **** Fort Smith
Fort Boggy State Park  difficulty 0.0 Centerville
Fort Benning MTB Trail Intermediate difficulty 11.0 **** Fort Benning
Fort Bayard Trail System Beginner difficulty 10.0 *** Bayard
Forsythe Park Beginner difficulty 4.0 *** Monroe
Forney Creek Trail Beginner difficulty 5.0 **** Denver
Forks Of The River Intermediate difficulty 4.0 *** Knoxville

Know of a new mountain bike trail not listed here? Please tell us about it using this form. Find mountain bike trails near you or for even more trail inspiration and how we ranked the mountain bike trails, see this list of the best mountain bike trails in the world.