B
- Bright Angel Trail
- Brighton to Eastbourne Coastal Hike
- Brighton Uphill Access
- Briksdal Glacier
- Brilon TrailGround
- Bristlecone and Glacier Trail
- Broad Gully
- Broadway
- Broken Boyfriend Loop
- Broken Hand Peak
- Broken Hill Beach Loop
- Broken Top Loop
- Broken Top Loop Trail
- Broken Top: Northwest Ridge via Green Lakes Trail
- Broken Top: Northwest Ridge via Green Lakes Trail
- Brokeoff Mountain Trail
- Brooks Falls
- Broom Closet
- Broom Closet
- Broom Stick
- Brougham's Banger
- Brown Mountain
- Brown Mountain
- Brown Mountain
- Brown Mountain Loop
- Brown Pow Loop
- Brown's Canyon
- Brown's Canyon
- Browns Canyon National Monument Loop Hike
- Brown's Creek Falls
- Browns Gap Waterfall Loop
- Brown's Ranch Loop
- Bruce's Shoulder
- Bruin Bluff Loop
- Bruson - Orsieres
- Brutus
- Bryce Rim Trail
- Buachaille Etive Mor
- Bubbles Nubble Loop
- Buchberg
- Buchegg Trail
- Buckeye / Bridle Loop
- Buckeye / Towpath Loop
- Buckeye Trail: Oak Grove Picnic Area to Pine Lane
- Buck Gulch -> Strawberry Jack Loop
- Buck Hill Trail
- Bucklin Trail
- Buckskin Gulch
- Buckskin Gulch
- Buckskin Pass, Willow Pass, and Willow Lake Trek
- Buckskin Pass -> Willow Pass -> Willow Lake
- Buck's Traverse
- Bucktail Easy Loop
- Buffalo Creek IMBA Epic Loop
- Bugaboos
- Bulgarian Way / Götzens Trail Part II
- Bull and Jake Mountain Trail System
- Bullet
- Bullet DH
- Bull Mountain
- Bull Run Trees
- Bulnes to Jou de Cabrones and the Cabrones refuge
- Bumpass Hell
- Buncom Mixed-Surface Ride
- Buncom Mixed-Surface Ride
- Bunny Loop
- Bunsen Peak
- Burfell Chute Loop
- Burgeralm
- Burgstall Rinne
- Burgstall Sattel
- Burgstall Wand
- Burma Road
- Burn 2
- Burnt Stew Trail
- Burramoko Fire Trail (Hanging Rock), Blue Mountains
- Burro -> Mustang -> Javelina Loop
- Burro Trail
- Burroughs Mountain Loop
- Burstinden