| 1.21 Gigawatts | | Bear’s Best | Las Vegas | NV | mtb |
| 13th Hole | | Cedar City | Cedar City | UT | mtb |
| 215 | | Henderson | Henderson | NV | mtb |
| 215 Bike Path (East Segment) | | Henderson | Henderson | NV | mtb |
| 3 Falls Connector | | Hurricane Cliffs | Hurricane | UT | mtb |
| 3 Mile Smile | | Cottonwood Valley | Las Vegas | NV | mtb |
| 601 | | McCullough Trails | Henderson | NV | mtb |
| 601 - Lower | | McCullough Trails | Henderson | NV | mtb |
| 601 Nitro | | McCullough Trails | Henderson | NV | mtb |
| 601 Powerline | | McCullough Trails | Henderson | NV | mtb |
| 601 Powerline Connector | | McCullough Trails | Henderson | NV | mtb |
| 603 | | McCullough Trails | Henderson | NV | mtb |
| 606 | | McCullough Trails | Henderson | NV | mtb |
| 606 Continued #606 | | McCullough Trails | Henderson | NV | mtb |
| 607 | | McCullough Trails | Henderson | NV | mtb |
| 613 Bike Path | | Brian's Best | Las Vegas | NV | mtb |
| 701 Connector | | McCullough Trails | Henderson | NV | mtb |
| 701 Loop | | McCullough Trails | Henderson | NV | mtb |
| 747 | | Desert Canyons | St. George | UT | mtb |
| 8 Mile Access | | Fillmore | Fillmore | UT | |
| 8 Mile Creek | | Fillmore | Fillmore | UT | |
| Acastus Trail | | Mt. Charleston | Las Vegas | NV | mtb |
| Access Road | | Wire Mesa | Hurricane | UT | mtb |
| Access Road | | Barnes Canyon | Caliente | NV | mtb |
| Access to Pioneer #1105 | | Bald Mountain Ephraim | Ephraim | UT | |
| Access to Pioneer | | Bald Mountain Ephraim | Ephraim | UT | |
| Access Trail | | Barnes Canyon | Caliente | NV | mtb |
| Adam Bomb | | Mt. Charleston | Las Vegas | NV | mtb |
| Adams | | Hurricane | Hurricane | UT | mtb |
| Advanced Climbing Trail | | Caliente Bike Skills Park and Trails | Caliente | NV | mtb |
| Advanced Lower Trail | | Caliente Bike Skills Park and Trails | Caliente | NV | mtb |
| Advanced Upper Trail | | Caliente Bike Skills Park and Trails | Caliente | NV | mtb |
| Adventure Scout | | Rhythm & Blues | Hurricane | UT | mtb |
| Agua Canyon Connect | | Paunsaugunt Plateau | Panguitch | UT | hike |
| Aiden Quarries | | Union Trails | Las Vegas | NV | mtb |
| Airport Security | | Desert Canyons | St. George | UT | mtb |
| Alice | | Southwest Ridge | Las Vegas | NV | mtb |
| Alma Christensen #363 | | Fremont Indian State Park | Richfield | UT | hike |
| Alpine Pond (East) | | Cedar Breaks National Monument | Cedar City | UT | hike |
| Alpine Pond (West) | | Cedar Breaks National Monument | Cedar City | UT | hike |
| Amargosa | | McCullough Trails | Henderson | NV | mtb |
| Amargosa Connect | | McCullough Trails | Henderson | NV | mtb |
| Amish Paradise | | Calico Basin | Las Vegas | NV | mtb |
| Anasazi | | Santa Clara River Reserve | St. George | UT | mtb |
| Anasazi | | Hurricane | Hurricane | UT | mtb |
| Anderson Valley Trail #31022 | | New Harmony Nature Park | New Harmony | UT | hike |
| Angel Peak | | Mt. Charleston | Las Vegas | NV | atv |
| Angel Trail (west) | | Utah | Moab | UT | hike |
| Angel's Palace | | Kodachrome Basin State Park | Cannonville | UT | hike |
| Angel's Palace Spur 2 | | Kodachrome Basin State Park | Cannonville | UT | hike |
| Angels Landing | | Zion National Park | Rockville | UT | hike |
| Angels Palace Spur 1 | | Kodachrome Basin State Park | Cannonville | UT | hike |
| Angels Window | | The South Rim | | AZ | hike |
| Angry Dragon | | Union Trails | Las Vegas | NV | mtb |
| Ant Hill #2341 | | Thousand Lake Mountain | Torrey | UT | |
| Anthem East | | McCullough Trails | Henderson | NV | mtb |
| Anthem East (Paved) | | McCullough Trails | Henderson | NV | mtb |
| Anthem East Trail | | McCullough Trails | Henderson | NV | mtb |
| Apex Mine Road | | Green Valley | St. George | UT | mtb |
| Aquarius Guard Station #30182 | | Boulder Mountain - Boulder Top | Torrey | UT | |
| Arches #075 | | Red Canyon | Panguitch | UT | hike |
| Arizona Trail - 42/43 (89A to Utah) | | Kaibab Plateau | Jacob Lake | AZ | |
| Armageddon | | Bootleg Canyon | Boulder City | NV | mtb |
| Around the Pond | | Green Valley | St. George | UT | mtb |
| Arroyo Grande Connector | | Henderson | Henderson | NV | mtb |
| Ash Canyon Trail | | Caliente | Caliente | NV | hike |
| Ashdown Creek Road | | Cedar Canyon | Cedar City | UT | |
| Ashdown Gorge | | Cedar Canyon | Cedar City | UT | hike |
| Ashdown Gorge: Twin Falls | | Cedar Canyon | Cedar City | UT | hike |
| Asher's Alternative | | Santa Clara River Reserve | St. George | UT | mtb |
| Aspen Trail #31664 | | Deer Hollow Winter Recreation Area | Brian Head | UT | |
| Asperation Cutoff | | Desert Canyons | St. George | UT | hike |
| Aspiration Trail | | Desert Canyons | St. George | UT | hike |
| Aspiration Trail (upper access) | | St. George | St. George | UT | hike |
| Atomic | | Southwest Ridge | Las Vegas | NV | mtb |
| Auger Hole Trail #025 | | Aquarius Plateau | Escalante | UT | |
| AZT - 39/40/41 (North Rim to 89A) | | Kaibab Plateau | Jacob Lake | AZ | |
| Babylon Arch Trail | | Red Cliffs BLM National Conservation Area-Sand Cove Unit | Hurricane | UT | hike |
| Back 40 | | Barnes Canyon | Caliente | NV | mtb |
| Backwoodz | | Da Burbs | Las Vegas | NV | mtb |
| Bad Bunny | | Calico Basin | Las Vegas | NV | mtb |
| Bad Words Hill | | Red Rock Canyon National Conservation Area | Las Vegas | NV | atv |
| Bad Words Hill Optional Route | | Red Rock Canyon National Conservation Area | Las Vegas | NV | atv |
| Badger Pass | | Cottonwood Valley | Las Vegas | NV | mtb |
| Badger Pass Climb | | Cottonwood Valley | Las Vegas | NV | mtb |
| Baking Powder | | Union Trails | Las Vegas | NV | mtb |
| Baking Powder DH | | Union Trails | Las Vegas | NV | mtb |
| Bald Mt. Summit | | Bald Mountain Ephraim | Ephraim | UT | |
| Bald Mt. Summit — East | | Bald Mountain Ephraim | Ephraim | UT | hike |
| Bandana | | Da Burbs | Las Vegas | NV | mtb |
| Bandana Connector | | Da Burbs | Las Vegas | NV | mtb |
| Bare Spot #4170 | | Thousand Lake Mountain | Torrey | UT | |
| Barker Trailhead Road #30469 | | Escalante Mountains | Escalante | UT | |
| Barnes Canyon Road | | Barnes Canyon | Caliente | NV | mtb |
| Barney Cove OHV trail | | Red Canyon | Panguitch | UT | mtb |
| Barrel | | Green Valley | St. George | UT | mtb |
| Barrel | | Green Valley | St. George | UT | mtb |
| Barrel | | Green Valley | St. George | UT | mtb |
| Barrel | | Green Valley | St. George | UT | mtb |
| Barrel | | Green Valley | St. George | UT | mtb |
| Barrel | | Green Valley | St. George | UT | mtb |
| Barrel | | Green Valley | St. George | UT | mtb |
| Barrel Connector | | Green Valley | St. George | UT | mtb |
| Barrel Connector | | Green Valley | St. George | UT | mtb |
| Barrel Jump | | Green Valley | St. George | UT | mtb |
| Barrel Overlook | | Green Valley | St. George | UT | mtb |
| Barrel Roll | | Santa Clara River Reserve | St. George | UT | mtb |
| Basalt Trail #31664 | | Deer Hollow Winter Recreation Area | Brian Head | UT | |
| Base Access Rd | | Eastside | Las Vegas | NV | |
| Base Line | | Green Valley | St. George | UT | mtb |
| Baseball Access | | Kanab | Kanab | UT | mtb |
| BC | | Bootleg Canyon | Boulder City | NV | mtb |
| BCP Shortcut #2 | | Green Valley | St. George | UT | mtb |
| BCP Shortcut #3 | | Green Valley | St. George | UT | mtb |
| Beagledaddy | | McCullough Trails | Henderson | NV | mtb |
| Beamer Trail | | The South Rim | | AZ | hike |
| Bear's Best access rd | | Bear’s Best | Las Vegas | NV | mtb |
| Bearclaw Poppi | | Green Valley | St. George | UT | mtb |
| Bearclaw Poppi (clavicle) | | St. George | St. George | UT | mtb |
| Bearclaw Poppi C | | Green Valley | St. George | UT | mtb |
| Bearclaw Poppy | | Green Valley | St. George | UT | mtb |
| Bearclaw Poppy (down) | | Green Valley | St. George | UT | mtb |
| Bearclaw Poppy (Up) | | Green Valley | St. George | UT | mtb |
| Bearclaw Poppy (up) | | Green Valley | St. George | UT | mtb |
| Bears Best | | Southwest Ridge | Las Vegas | NV | mtb |
| Beats More Road | | Bear’s Best | Las Vegas | NV | mtb |
| Beats the Road | | Southwest Ridge | Las Vegas | NV | mtb |
| Beck Hill | | Snow Canyon State Park | St. George | UT | mtb |
| Beggar’s Canyon C | | Las Vegas | Las Vegas | NV | mtb |
| Beginner Loop | | Cottonwood Valley | Las Vegas | NV | mtb |
| Behunin Creek Trail | | Boulder Mountain-East Slope | Torrey | UT | |
| Belknap Barn | | Fremont Indian State Park | Richfield | UT | hike |
| Belknap Ranger Station | | Fremont Indian State Park | Richfield | UT | hike |
| Belknap Refrigerator | | Fremont Indian State Park | Richfield | UT | hike |
| Benchmark | | Southwest Ridge | Las Vegas | NV | mtb |
| Bermie Mac | | Calico Basin | Las Vegas | NV | mtb |
| Berry's Dive | | Bear’s Best | Las Vegas | NV | mtb |
| Bess Lake #31001 | | Boulder Mountain - Boulder Top | Torrey | UT | |
| Betty Boop | | Southwest Ridge | Las Vegas | NV | mtb |
| Big Bear Geyser | | Panguitch | Panguitch | UT | mtb |
| Big Hole | | Three Peaks | Cedar City | UT | mtb |
| Big Hole Loop | | Three Peaks | Cedar City | UT | mtb |
| Big Horn Spur | | Da Burbs | Las Vegas | NV | mtb |
| Big John Flat | | Eagle Point Resort | Beaver | UT | hike |
| Big John Flat Trailhead | | Eagle Point Resort | Beaver | UT | mtb |
| Big John's Connector | | Eagle Point Resort | Beaver | UT | mtb |
| Big Loop | | Little Creek Mountain | Hurricane | UT | mtb |
| Big Red | | Pahvant Trail System | Richfield | UT | mtb |
| Big Toe | | Zion National Park | Rockville | UT | mtb |
| Bill Hall Trail | | Kaibab Plateau | Jacob Lake | AZ | hike |
| Biotic Loop | | White Dome Nature Preserve | St. George | UT | hike |
| Bipolar | | Southwest Ridge | Las Vegas | NV | mtb |
| Birdseye Trail #097 | | Red Canyon | Panguitch | UT | hike |
| Birthday Cake | | Bald Mountain Ephraim | Ephraim | UT | mtb |
| Bitter Creek Narrows | | Red Cliffs BLM National Conservation Area | Hurricane | UT | hike |
| Bitter Springs | | Las Vegas | Las Vegas | NV | atv |
| Black Box | | Desert Canyons | St. George | UT | mtb |
| Black Brush | | Santa Clara River Reserve | St. George | UT | hike |
| Black Brush Acc | | Santa Clara River Reserve | St. George | UT | mtb |
| Black Brush Acc | | Santa Clara River Reserve | St. George | UT | mtb |
| Black Friday | | Da Burbs | Las Vegas | NV | mtb |
| Black Friday Connector | | Da Burbs | Las Vegas | NV | mtb |
| Black Lunge | | Jackrabbit Trails | Logandale | NV | mtb |
| Black Ops | | Iron Hills Trail System (AKA: Southview) | Cedar City | UT | mtb |
| Black Velvet | | Cottonwood Valley | Las Vegas | NV | mtb |
| Black Velvet Road | | Las Vegas | Las Vegas | NV | atv |
| Blake-Gubler #31026 | | Red Cliffs BLM National Conservation Area | Hurricane | UT | hike |
| Blarney Canyon | | North Wash | Hanksville | UT | hike |
| Blazing Saddles | | Da Burbs | Las Vegas | NV | mtb |
| Blind Lake (lakeshore loop) #35144 | | Boulder Mountain-North Slope | Torrey | UT | |
| Blind Lake Access #2134 | | Thousand Lake Mountain | Torrey | UT | |
| Blind Lake Trail #35144 | | Boulder Mountain-North Slope | Torrey | UT | |
| BLM Doubletrack | | Little Creek Mountain | Hurricane | UT | mtb |
| BLM Road | | Southwest Ridge | Las Vegas | NV | hike |
| Blombi | | Las Vegas | Las Vegas | NV | mtb |
| Bloomington Alt | | St. George | St. George | UT | mtb |
| Blowhard Trail #32047 | | Cedar Canyon | Cedar City | UT | mtb |
| Blue Fly-Proctor Trail #3054 | | Paunsaugunt Plateau | Panguitch | UT | |
| Blue Lake #172 | | Tushar Peaks | Beaver | UT | |
| Blue Lake Loop Road #30176 | | Boulder Mountain - Boulder Top | Torrey | UT | mtb |
| Blue Run | | Brian Head | Brian Head | UT | mtb |
| Blue Run (Lower) | | Brian Head | Brian Head | UT | mtb |
| Blue Springs Trail #032 | | Aquarius Plateau | Escalante | UT | |
| Bluegrass Trail #35168 | | Boulder Mountain-East Slope | Torrey | UT | |
| Bluff Street | | St. George | St. George | UT | mtb |
| Blythe-Ehrenberg River Crossing | | Riverside County | Yuma | CA | mtb |
| Boar's Head | | Barnes Canyon | Caliente | NV | mtb |
| Boat on a Hill | | Pigeon Hollow Ephraim | Spring City | UT | mtb |
| Bob Gnarly | | Cowboy Trails | Las Vegas | NV | mtb |
| Bomb Voyage | | Cowboy Trails | Las Vegas | NV | mtb |
| Bonanza Trail | | Mt. Charleston | Las Vegas | NV | hike |
| Bone Shaker | | Cowboy Trails | Las Vegas | NV | mtb |
| Bonnie and Clyde | | Cottonwood Valley | Las Vegas | NV | mtb |
| Bonnie and Clyde connector | | Cottonwood Valley | Las Vegas | NV | mtb |
| Bootleg Spring Rd | | Las Vegas | Las Vegas | NV | atv |
| Bottom Access Road | | Bootleg Canyon | Boulder City | NV | mtb |
| Boulder Dash | | Iron Hills Trail System (AKA: Southview) | Cedar City | UT | mtb |
| Boulder Mail Trail | | Death Hollow/Upper Escalante | Escalante | UT | hike |
| Boulder Swale Trail #022 | | Boulder Mountain-South Slope | Boulder | UT | |
| Boulder Top #30178 | | Boulder Mountain - Boulder Top | Torrey | UT | |