AZ Trail to North Happy Camp Road Loop [CLOSED]
Superior, Arizona
12.7 km1,181 ftgain2h 57m
ModerateLoop
Azalea Lake and Flora Lake via Donner Summit Lakes Trail
Truckee, California
4.3 km305 ftgain1h
ModerateOut & Back
Aziscohos North Trail
Andover, Maine
5.2 km1,427 ftgain1h 47m
ModerateOut & Back
B Mountain Trail [PRIVATE PROPERTY]
Ridgecrest, California
7.4 km1,194 ftgain2h 5m
ModerateOut & Back
B&M Trail
Amherst, New Hampshire
6.3 km262 ftgain1h 20m
EasyOut & Back
B-17C Crash Site Loop Trail
Twin Bridges, California
11.6 km1,493 ftgain2h 49m
ModerateLoop
B-Line Trail
Bloomington, Indiana
10.0 km262 ftgain2h 9m
EasyOut & Back
B.F.I., Moro Ridge Spur, Poles Loop [CLOSED]
Laguna Beach, California
7.7 km1,293 ftgain2h 8m
ModerateLoop
Babel Tower Trail
Marion, North Carolina
3.9 km1,194 ftgain1h 13m
DifficultOut & Back
Baby Jesus and Middle Gate Trail Loop
Tucson, Arizona
9.7 km1,358 ftgain2h 38m
ModerateLoop
Bachelor Gulch Trail
Avon, Colorado
8.4 km1,568 ftgain2h 23m
DifficultLoop
Bachelor Mountain via Bugaboo Ridge
Detroit, Oregon
11.7 km2,451 ftgain3h 21m
DifficultOut & Back
Back Basin Trail [CLOSED]
Yellowstone National Park, Wyoming
4.2 km230 ftgain56m
EasyLoop
Back Bay to Eastbluff
Newport Beach, California
7.7 km554 ftgain1h 40m
EasyOut & Back
Back Bone Lookout To Red Rock [CLOSED]
Topanga, California
14.6 km2,894 ftgain4h 6m
DifficultLoop
Back Creek Trail [CLOSED]
Clayton, California
8.0 km1,946 ftgain2h 33m
ModerateOut & Back
Back Hollow Trail
Dryfork, West Virginia
10.3 km745 ftgain2h 20m
EasyOut & Back
Back Mountain Trail
Luzerne, Pennsylvania
10.0 km889 ftgain2h 17m
EasyOut & Back
Back River Lighthouse Ruins Trail
Hampton, Virginia
3.1 km75 ftgain38m
EasyOut & Back
Back Yard Mountain Bike Trails
Charlotte, North Carolina
12.9 km922 ftgain2h 54m
ModerateLoop
Backbone Trail to Sandstone Peak and Mishe Mokwa Trail Loop [CLOSED]
Malibu, California
9.2 km1,765 ftgain2h 33m
ModerateLoop
Backpacker Trail to Bear Paw Loop
Marlborough, Massachusetts
4.2 km384 ftgain59m
ModerateLoop
Bacon Ridge Trail
Crownsville, Maryland
8.9 km1,027 ftgain2h 4m
EasyLoop
Badger Mountain Trail
Richland, Washington
3.9 km1,795 ftgain1h 25m
ModerateLoop