About hiking in Boulder County

Boulder County, Colorado has 651 named trails tagged for hiking, covering 730 miles, an average of 1.1 miles each. The longest is Sourdough Trail, at 24.6 miles. 20 run 5 miles or longer.

What the hiking trails in Boulder County are like

By length, 433 are under a mile, 198 run 1 to 5 miles, and 20 are 5 miles or longer. 16 are loops, ending where they start; the longest is Thunder Lake Trail, at 8.9 miles.

Of the 370 with a difficulty rating, 140 easy, 165 moderate, and 65 hard. Of the 651 with measured elevation, Buchanan Pass Trail climbs the most, about 4,248 ft, and 36 gain 1,000 ft or more.

Hiking Trails — page 1 of 3

Sourdough TrailHikeMTB24.6 mi Boulder Valley Ranch TrailsHike15.2 mi Coal Creek TrailHikeMTB10.2 mi Niwot Loop TrailHikeMTB9.3 mi Thunder Lake TrailHike8.9 mi Buchanan Pass TrailHikeMTB8.9 mi Rock Creek TrailHikeMTB8.8 mi Arapaho Glacier TrailHike7.6 mi Switzerland Trail Colorado and North Western Rail RoadHikeMTB6.8 mi Oligarchy Ditch TrailHikeMTB6.8 mi Beaver Creek TrailHike6.6 mi Wild Basin TrailHike6.6 mi Saint Vrain Mountain TrailHike6.4 mi Dry Creek TrailHikeMTB6.3 mi Mesa TrailHike6.3 mi Devils Thumb TrailHike6.0 mi Hicks GulchHike6.0 mi Buchannan Pass TrailHike5.5 mi Finch Lake - Pear Lake TrailHike5.4 mi Walker MountainHike5.3 mi Open Sky LoopHikeMTB4.9 mi Night Hawk TrailHike4.6 mi Sandbeach Lake TrailHike4.2 mi Coulson Gulch TrailHike4.0 mi Wonderland Creek GreenwayHikeMTB3.9 mi King LakeHike3.8 mi Meadowlark TrailHikeMTB3.7 mi Diamond Lake TrailHike3.7 mi North Sky TrailHikeMTB3.7 mi Button Rock TrailHike3.6 mi Indian Mesa TrailHikeMTB3.4 mi South Saint Vrain TrailHikeMTB3.4 mi Community Ditch TrailHikeMTB3.2 mi Eldorado Canyon TrailHike3.1 mi Saint Vrain Glacier TrailHike3.0 mi Davidson Mesa TrailHikeMTB3.0 mi Eagle TrailHikeMTB3.0 mi Left Hand Creek TrailHikeMTB3.0 mi Lower Pixie DuffHikeMTB3.0 mi Left Hand TrailHikeMTB3.0 mi Miller RockHikeMTB2.9 mi Winiger Ridge RoadHike2.9 mi Wild Turkey Loop TrailHikeMTB2.9 mi Anemone Loop TrailHike2.8 mi Coalton TrailHikeMTB2.8 mi Powerline TrailHikeMTB2.7 mi High Plains TrailHikeMTB2.7 mi Winiger Ridge TrailHikeMTB2.7 mi Taylor Mountain TrailHike2.7 mi Taylor Mountain SpurHikeMTB2.6 mi McCaslin TrailHikeMTB2.6 mi Foothills Parkway Multi-Use PathHikeMTB2.6 mi Meyer's Homestead TrailHikeMTB2.6 mi Boy Scout SpurHikeMTB2.6 mi Ponderosa Loop TrailHikeMTB2.6 mi Niwot Ridge TrailHikeMTB2.5 mi Hobbit 2HikeMTB2.5 mi Lion's Lair TrailHike2.5 mi Slaughterhouse Gulch RoadHike2.4 mi Erie Loop TrailHikeMTB2.4 mi Wonderland Lake TrailHikeMTB2.4 mi Wonderland HillHike2.4 mi Woodland Lake TrailHike2.4 mi Mitchell Lake TrailHike2.4 mi Pawnee Pass TrailHike2.4 mi Boulder Canyon TrailHikeMTB2.3 mi Chapman DriveHikeMTB2.3 mi Gross Reservoir RoadHike2.3 mi Isabell Glacier TrailHike2.3 mi Pipeline TrailHikeMTB2.3 mi Finch Lake Cutoff TrailHike2.3 mi East Boulder - White Rocks TrailHikeMTB2.3 mi Benjamin Trail LoopHikeMTB2.3 mi Storm GulchHike2.3 mi Elk TrailHike2.2 mi Oh Danny Boy LoopHike2.2 mi RebootHikeMTB2.2 mi Nelson LoopHikeMTB2.2 mi Bear CanyonHike2.2 mi Waldrop TrailHikeMTB2.2 mi Overland Loop TrailHikeMTB2.2 mi Sheep's WayHike2.2 mi Spring Brook Loop North TrailHikeMTB2.2 mi Gordon GulchHike2.2 mi Button Rock Mountain LoopHikeMTB2.2 mi Plants and AnimalsHike2.2 mi Doudy Draw TrailHikeMTB2.2 mi Bear Creek GreenwayHikeMTB2.2 mi Coney Lake TrailHike2.1 mi East Boulder - Teller Farm TrailHikeMTB2.1 mi ManagersHikeMTB2.1 mi Mount Audubon TrailHike2.1 mi Lion Lake TrailHike2.1 mi East Boulder - Gunbarrel TrailHikeMTB2.1 mi North Sheep Mountain TrailHikeMTB2.1 mi Cony Lake TrailHike2.1 mi Fourmile Canyon Creek PathHikeMTB2.0 mi Flagstaff TrailHike2.0 mi East Boulder Community Park pathHikeMTB2.0 mi Sleepy Lion TrailHike2.0 mi Switzerland Trail Colo. & North Western R. R.Hike2.0 mi Ouzel Lake TrailHike1.9 mi Green Mountain West Ridge TrailHike1.9 mi Ceran St. Vrain TrailHike1.9 mi Sage TrailHikeMTB1.8 mi Shanahan - South Fork TrailHike1.8 mi Bright Trail ExtensionHike1.8 mi Lower Big Bluestem TrailHike1.8 mi Left Hand Reservoir RoadHikeMTB1.8 mi Willows TrailHikeMTB1.8 mi Bluebird Lake TrailHike1.8 mi Crook's NookHike1.8 mi Hogback Ridge TrailHike1.8 mi Gillespie GulchHike1.7 mi Mary Miller TrailHikeMTB1.7 mi Hoh'onookee Koh'owu TrailHike1.7 mi Bear Peak West Ridge TrailHike1.7 mi Boy Scout TrailHike1.7 mi Walden PondsHikeMTB1.7 mi Taylor MountainHikeMTB1.7 mi Bright TrailHikeMTB1.7 mi Left Hand Main TrailHikeMTB1.7 mi Allenspark TrailHike1.7 mi North Shore TrailHike1.7 mi Guinn Mountain TrailHikeMTB1.6 mi Goshawk Ridge TrailHike1.6 mi Sawhill PondsHike1.6 mi Cannon Mountain DitchHike1.6 mi Burning BushHikeMTB1.6 mi Anne U White TrailHike1.6 mi NeverlandHikeMTB1.6 mi Dry Saint Vrain TrailHikeMTB1.6 mi Greenbelt Plateau TrailHikeMTB1.6 mi Harney LastokaHikeMTB1.5 mi Oh Danny BoyHike1.5 mi Grindstone Quarry TrailHike1.5 mi 28th Street PathHikeMTB1.5 mi North Rim TrailHikeMTB1.5 mi Forsythe Canyon TrailHikeMTB1.5 mi E.M. Greenman TrailHike1.5 mi hikingHike1.5 mi Colorado and North Western R. RHike1.5 mi The Righteous PathHikeMTB1.5 mi Vesper TrailHike1.5 mi Cradleboard TrailHikeMTB1.5 mi Aspen Alley TrailHikeMTB1.5 mi David Lee RothHikeMTB1.5 mi Fowler TrailHikeMTB1.5 mi Legend Ridge LoopHikeMTB1.5 mi Fireman Hill TrailHikeMTB1.4 mi PipelineHikeMTB1.4 mi Crash'nHikeMTB1.4 mi Green Bear TrailHike1.4 mi Jean Lunning TrailHike1.4 mi Dakota Ridge TrailHike1.4 mi Cardinal Hill TrailHike1.4 mi Lazy H Horse Trail NetHike1.4 mi Joder Ranch TrailHikeMTB1.4 mi Upper Pixie DuffHikeMTB1.4 mi Hidden Star TrailHikeMTB1.3 mi Barker Reservoir TrailHike1.3 mi Homestead TrailHike1.3 mi Cottonwood TrailHikeMTB1.3 mi The GrindHikeMTB1.3 mi Jenny Creek TrailHikeMTB1.3 mi Rattelsnake XCHikeMTB1.3 mi Dry CreekHike1.3 mi Ranger TrailHike1.3 mi Overbrook TrailHikeMTB1.3 mi Fuzzy SpiritHikeMTB1.3 mi SherwoodHikeMTB1.3 mi Lykins Gulch TrailHikeMTB1.3 mi Deer Ridge TrailHike1.3 mi ArkansasHikeMTB1.3 mi Twin Sisters Peak TrailHike1.3 mi Middle Saint Vrain TrailHikeMTB1.2 mi Red Rocks Spur TrailHike1.2 mi Hidden Valley TrailHike1.2 mi Sanitas Valley TrailHike1.2 mi Foothills North TrailHikeMTB1.2 mi Marshall Valley TrailHikeMTB1.2 mi Lichen Loop TrailHike1.2 mi Mount Sanitas TrailHike1.2 mi Inlet TrailHike1.2 mi Coney Non-Motorized SpurHikeMTB1.2 mi Gregory Canyon TrailHike1.2 mi Waneka Lake TrailHikeMTB1.2 mi Sunshine Canyon TrailHike1.2 mi Elk TrickleHikeMTB1.2 mi Shadow Canyon TrailHike1.2 mi Saddle Rock TrailHike1.2 mi TNT TrailHike1.2 mi Boulder-Grand Pass TrailHike1.2 mi Niwot MountainHike1.2 mi Coon TrailHike1.1 mi Box-Eagle Lakes RouteHike1.1 mi Four Pines TrailHike1.1 mi Prairie Vista TrailHikeMTB1.1 mi Kinnickinnick LoopHikeMTB1.1 mi Enchanted Mesa TrailHike1.1 mi Spruce Gulch RoadHike1.1 mi Somerset TrailHikeMTB1.1 mi Spring Brook Loop South TrailHikeMTB1.1 mi Murder HorseHikeMTB1.1 mi Kensington Ditch TrailHikeMTB1.1 mi TenderfootHike1.1 mi Cobalt TrailHikeMTB1.1 mi South Boulder Creek West TrailHike1.0 mi Rainbow Lakes TrailHike1.0 mi FudgepackerHikeMTB1.0 mi Cowdrey Draw TrailHikeMTB1.0 mi Ridge Road ConnecterHike1.0 mi Viewpoint TrailHike1.0 mi Skunk Creek GreenwayHikeMTB1.0 mi Fourmile Creek TrailHikeMTB1.0 mi Switzerland Trail Colorado and North Western R.R.Hike1.0 mi Mesa Reservoir TrailHike1.0 mi Skunk Canyon TrailHike1.0 mi Schoolhouse LoopHikeMTB1.0 mi Pine to Peaks LoopHike1.0 mi Canyon RimHikeMTB1.0 mi Summer SnowshoeHikeMTB1.0 mi Upper Big Bluestem TrailHike1.0 mi Star WarsHikeMTB1.0 mi Bon Scott TrailHikeMTB1.0 mi City of Lafayette TrailHikeMTB1.0 mi Fern Canyon TrailHike0.9 mi Foothills SouthHikeMTB0.9 mi CMC Brainard Snowshoe trailHike0.9 mi Summer RoadHikeMTB0.9 mi Inlet LoopHike0.9 mi Pearl Parkway Multi-Use PathHikeMTB0.9 mi Centennial TrailHikeMTB0.9 mi Sale Loop RoadHike0.9 mi Winiger Spur RoadHikeMTB0.9 mi Rocks and RootsHikeMTB0.9 mi Degge TrailHike0.9 mi GhostHike0.9 mi South Boulder Creek WestHike0.9 mi Leon Wurl TrailHikeMTB0.9 mi Lincoln LogHikeMTB0.9 mi Ute TrailHike0.9 mi Valmont Multi-Use PathHikeMTB0.9 mi IBM Connector TrailHike0.9 mi Ruth Roberts Connector TrailHikeMTB0.9 mi Shadow Canyon South TrailHike0.9 mi FlatIrons Vista North TrailHikeMTB0.9 mi Fox Creek TrailHike0.9 mi Lagerman TrailHikeMTB0.9 mi Sacred CliffsHike0.9 mi South Shore TrailHike0.9 mi North Boulder Creek SpursHike0.9 mi Maryville DownhillHike0.9 mi Tantra Park PathHikeMTB0.8 mi Devil's Thumb TrailHikeMTB0.8 mi Golden Meadow TrailHike0.8 mi A-Lodge ConnectorHikeMTB0.8 mi Ken Pratt SidepathHike0.8 mi US 36 Bikeway Park-N-Ride West ConnectorHikeMTB0.8 mi Bob and Betty Lakes TrailHike0.8 mi Four Mile Creek PathHikeMTB0.8 mi Cook Mountain Summit (unmaintained)Hike0.8 mi Cottonwood PathHikeMTB0.8 mi Rattlesnake GulchHike0.8 mi 1st/2nd FlatironHike0.8 mi Old KilnHike0.8 mi Royal ArchHike0.8 mi Blue Bird Loop Colorado and North Western R. R.Hike0.8 mi Blue Bird LoopHike0.8 mi Devil's Thumb Bypass TrailHike0.8 mi Spruce Gulch Single TrackHikeMTB0.8 mi Elmer's Two Mile Bike PathHikeMTB0.8 mi Miller Rock DescentHike0.8 mi Whoopp-Di-DoosHikeMTB0.8 mi Kendall's KornerHikeMTB0.8 mi DeLonde TrailHike0.8 mi Tungsten LoopHikeMTB0.8 mi Cougar TrailHikeMTB0.8 mi Legion Park TrailHike0.8 mi Baughmans Gulley Single Track TrailHikeMTB0.8 mi Baptiste TrailHikeMTB0.7 mi Coal Seam TrailHikeMTB0.7 mi Range View TrailHike0.7 mi Greenbriar Connector TrailHike0.7 mi Hallie A Tungsten MineHike0.7 mi Mallory Cave TrailHike0.7 mi Shanahan - North Fork TrailHike0.7 mi South Forest Loop - Private TrailHike0.7 mi Lost Lake TrailHike0.7 mi Black SlabbathHikeMTB0.7 mi 4th of July RoadHike0.7 mi Meadow Mountain Ranch TrailHike0.7 mi Caribou Ranch LinkHikeMTB0.7 mi Deer Ridge RoadHike0.7 mi Little Blue Lake RouteHike0.7 mi Shale TrailHike0.7 mi Levee TrailHikeMTB0.7 mi Dave's LoopHike0.7 mi Deer Ridge Spur RoadHike0.7 mi Beaver Reservoir Cutoff TrailHikeMTB0.7 mi

← All Boulder County trails

Trail geometry from OpenStreetMap contributors, licensed ODbL. Elevation from the USGS 3D Elevation Program. Compiled and published by Trailmonger · trail data last rebuilt September 24, 2026.