The City of Boulder Open Space and Mountain Trails (OSMP) department maintains about 170 different trails in the mountains, city and plains around Boulder. We do many of the same trails (e.g. Green Mountain, Mesa Trail and Mt. Sanitas) frequently and haven’t experienced some of the less-known trails. Staci and I decided it would be cool to do all the trails together. It took us about 2 years to do all of the them.

Click the link below for the current list of trails:

OSMP Trail List

The total number of trails continues to change but is currently about 170 comprising about 160 miles. The longest trails is the Mesa Trail at 6.3 miles and the shortest trails are less than a tenth of a mile and are usually connectors between a road and a major trail.

List of Trails Completed

1st/2nd Flatiron (0.9 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=259

6th Street Connector (0.3 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=339

6th Street Connector West (0 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=347

7th Street Connector (0 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=348

8th Street Connector (0 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=349

9th Street Connector (0 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=350

Amphitheater (0.4 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=263

Amphitheater Express (0.2 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=264

Anemone (0.4 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=287

Artist Point (0.1 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=279

Baseline (0.6 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=251

Baseline-Gregory Connector (0.1 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=344

Baseline Connector (0 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=346

Bear Canyon (1.9 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=226

Bear Peak (0.4 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=224

Bear Peak West Ridge (1.9 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=225

Big Bluestem West (0.2 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=212

Bluebell-Baird (0.7 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=252

Bluebell Mesa (0.4 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=254

Bluebell Road (0.9 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=249

Bluebell Spur (0.3 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=255

Bluestem Connector (0.5 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=214

Boulder Falls (0.1 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=296

Boy Scout (0.7 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=277

Buckingham Park (0.2 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=417

Chapman Drive (2.6 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=272

Centennial - Equestrian (0.2 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=510

Chautauqua (0.7 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=250

Cherryvale (1.0 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=513

Coal Seam (0.6 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=113

Coalton (1.9 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=109

Cobalt (0.9 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=412

Community Ditch (3.7 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=102

Cottonwood ( 1.3 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=507

Community Ditch Hwy 93 Spur (0.1 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=127

Cottontail (2.0 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=506

Cowdrey Draw (0.8 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=111

Cragmoor Connector (0.2 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=221

Crown Rock (0.4 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=282

Crown Rock Picnic Loop (0.1 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=327

Dakota Ridge (1.4 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=290

Degge (0.9 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=416

Devils Thumb Access (0.1 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=231

Doudy Draw (2.2 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=101

Doudy Draw Connector (0.0 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=107

Doudy Draw Picnic Area (0.0 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=126

Dry Creek (1.1 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=514

E.M. Greenman (1.7 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=268

Eagle (3.2 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=410

East Boulder - Teller Farm (2.3 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=503

East Boulder - Gunbarrel (2.2 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=502

East Boulder - Teller Farm Spur (0.2 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=516

East Boulder - Teller Lake #5 (0.1 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=515

East Boulder - Teller Spur (0.3 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=505

East Boulder - White Rocks (2.2 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=501

East Ridge (0.8 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=293

Eldorado Canyon (2.5 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=209

Enchanted - McClintock Spur (0.1 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=248

Enchanted-Kohler Spur (0.2 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=243

Enchanted Mesa (1.2 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=245

Fern Canyon (1.5 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=223

Fern Meadow - Cragmoor (0.3 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=322

Flagstaff (2.1 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=280

Flatirons Loop (0.5 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=256

Flatirons Vista North (1.2 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=116

Flatirons Vista South (2.2 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=118

Foothills North (1.3 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=401

Foothills - Wonderland Lake spur (0.0 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=406

Foothills South (0.9 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=403

Foothills Spur (0.0 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=418

Four Pines (1.2 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=292

Fowler (1.3 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=108

Goat (0.6 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=291

Goshawk Ridge (1.7 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=121

Greenbriar Connector (0.7 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=307

Halfway House (0.2 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=284

Green Bear (1.5 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=227

Green Mountain Summit (0.0 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=345

Green Mountain West Ridge (1.4 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=228

Greenbelt Connector (0.4 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=115

Greenbelt Plateau (1.4 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=103

Gregory Canyon (1.3 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=266

Gregory Canyon Spur (0.0 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=331

Hardscrabble Connector (0.1 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=218

Hidden Valley (1.2 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=414

High Plains (2.7 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=112

Hogback Ridge (1.8 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=402

Holly Berry (0.3 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=332

Homestead (1.3 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=203

Joder Ranch (2.0 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=420

IBM Connector (0.8 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=518

KOA Lake (0.1 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=517

Kohler Mesa (0.6 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=242

Kohler Spur (0.2 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=241

Left Hand (2.9 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=408

Lehigh Connector - North (0.2 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=220

Lehigh Connector - South (0.4 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=219

Lion's Lair (2.7 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=334

Long Canyon (1.5 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=271

Lion's Lair Spur (0.2 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=335

Lost Gulch (0.1 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=310

Lower Big Bluestem (1.7 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=211

Mallory Cave (0.8 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=236

Marshall Mesa (0.7 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=104

Marshall Valley (0.9 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=114

Marshall Valley - Accessible (0.1 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=106

May's Point (0.1 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=278

Mayhoffer-Singletree (0.3 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=110

McClintock Lower (0.4 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=246

McClintock Upper (0.4 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=247

Mesa Connector (0.2 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=306

Meadow (0.5 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=338

Mesa (6.3 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=201

Mesa Reservoir (1.0 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=415

Mount Sanitas (1.3 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=289

NCAR - Bear Canyon (1.2 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=230

NCAR (0.9 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=235

NCAR - Bear Connector (0.5 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=232

NCAR - Skunk Canyon (0.5 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=238

NCAR - Table Mesa (2.0 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=506

NCAR - Table Mesa/Bear (0.5 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=234

NCAR Water Tank Rd (0.3 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=237

NIST Service Rd (0.9 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=298

NIST Service Rd Connector (0.1 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=336

North Fork Shanahan (1,3 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=217

North Rim (0.2 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=411

Northern Quarry (0.0 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=295

Old Kiln (0.8 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=404

Old Kiln Spur (0.4 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=405

Panorama (0.3 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=283

Plains Overlook (0.3 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=281

Prairie Vista (1.1 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=117

Red Rocks (0.6 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=286

Sanitas Spur (0.1 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=297

Shadow Canyon (1.3 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=207

Range View (0.6 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=274

Ranger (1.5 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=269

Red Rocks Spur (1.7 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=308

Royal Arch (1.0 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=257

Saddle Rock (1.3 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=267

Sage (1.8 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=409

Sanitas Connector (0.0 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=309

Sanitas Valley (1.3 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=288

Sawhill Ponds (1.6 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=508

Sensory (0.1 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=321

Shadow Canyon North (0.6) - https://maps.bouldercolorado.gov/osmp-trails/?find=206

Shadow Canyon South (0.9 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=204

Shadow Canyon South Spur (0.3 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=205

Shanahan Connector (0.4 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=216

Shanahan - Mesa (0.5 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=222

Ski Jump (0.2 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=253

South Fork Shanahan (1.8 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=215

Upper Big Bluestem (1.0 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=213

Ute (0.8 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=275

Viewpoint (1.1 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=285

Skunk Canyon (1.4 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=239

Skunk Canyon Spur (0.2 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=240

Skunk Connector (0.2 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=333

Sombrero Marsh (0.3 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=509

South Boulder Creek (3.4 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=511

South Boulder Creek Access (0.1 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=300

South Boulder Creek West (1.9 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=210

South Boulder Peak (0.3 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=208

South Mesa Connector (0.0 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=229

South Mesa Spur (0.1 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=299

Spring Brook Loop North (2.2 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=119

Spring Brook Loop South (1.1 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=120

Sunshine Canyon (1.1 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=323

Tenderfoot (1.0 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=273

Towhee (0.7 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=202

Wonderland Hill (1.0 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=419

Wonderland Lake (1.1 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=407

Wood's Quarry (0.4 miles) - https://maps.bouldercolorado.gov/osmp-trails/?find=244