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Trail Conditions
- Unknown
- Snow Groomed
- Snow Packed
- Snow Covered
- Snow Cover Partial
- Freeze/thaw Cycle
- Icy
- Prevalent Mud
- Wet
- Variable
- Ideal
- Dry
- Very Dry
Trail Flow (Ridden Direction)
Trailforks scans users activity logs to determine the most popular direction each trail is ridden. A good flowing trail network will have most trails flowing in a single direction according to their intension.
The colour categories are based on what percentage of users are riding a trail in its intended direction.
The colour categories are based on what percentage of users are riding a trail in its intended direction.
- > 96%
- > 90%
- > 80%
- > 70%
- > 50%
- < 50%
- bi-directional trail
- no data
Trail Last Used
Trailforks scans activity logs to determine the last time a trail was ridden.
- < 2 days
- < 1 week
- < 2 weeks
- < 1 month
- < 6 months
- > 6 months
Trail Ridden Direction
The intended direction a trail should be ridden.
- Downhill Only
- Downhill Primary
- Both Directions
- Uphill Primary
- Uphill Only
- One Direction
Contribute Details
Colors indicate trail is missing specified detail.
- Description
- Photos
- Description & Photos
- Videos
Trail Popularity ?
Trailforks scans activity logs to determine which trails are ridden the most in the last 9 months.
Trails are compared with nearby trails in the same city region with a possible 25 colour shades.
Think of this as a heatmap, more activities = more kinetic energy = warmer colors.
- most popular
- popular
- less popular
- not popular
ATV/ORV/OHV Filter
Max Vehicle Width
inches
US Cell Coverage
Legend
Radar Time
Activity Recordings
Trailforks uses anonymized public activity data.
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Activity Recordings
Trailforks uses anonymized public activity data.
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Winter Trails
Warning
A routing network for winter maps does not exist. Selecting trails using the winter trails layer has been disabled.
Missing Trails
Most Popular
Least Popular
Trails are colored based on popularity. The more popular a trail is, the more red. Less popular trails trend towards green.
Jump Magnitude Heatmap
Heatmap of where users jump on trails. Zoom in to see individual jumps, click circles to view jump details.
BC Backroad Status
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Service Road Atlas is a free to use, community-driven service for viewing and creating reports on the numerous back-country service roads around B.C. and Alberta.
Slope Aspect
Direction the slope faces
Trails Deemphasized
Trails are shown in grey.
Only show trails with no bike usage.
Suggested Layers
Based on selected activity type
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SaveBoulder trails and routes are listed on Trailforks with interactive trail maps, difficulty ratings, photos, and user-reported trail conditions. The Trailforks community has mapped hundreds of trails and shared hundreds of photos in this region. Supported activity types include Hiking, Trail Running, Mountain Biking, E-Biking, Horseback, Gravel Biking and Adaptive Biking. Trails here are often faint trail, flowy and hike-a-bike in places. Scenery includes canyons, views and creeks. Common trail features include jumps, berms and drops. Many trails are family friendly. Amenities include restrooms and huts. Popular destinations include Boulder Open Space, Lefthand OHV and Valmont Bike Park.
This is an auto-generated description of Boulder.
Login or register to submit a custom description.
Trail info last updated
Activities Click to view
- Mountain Bike
248 trails
- E-Bike
133 trails
- Gravel Bike
124 trails
- Adaptive Bike
71 trails
- Horse
129 trails
- Hike
374 trails
- Trail Running
374 trails
Region Details
- 56
- 22
- 56
- 46
- 46
- 19
- 3
Region Status
Open as of 1 day
Stats
- Avg Trail Rating
- Trails (view details)
- 404
- Trails Mountain Bike
- 248
- Trails E-Bike
- 133
- Trails Gravel Bike
- 124
- Trails Adaptive Bike
- 71
- Trails Winter Fat Bike
- 1
- Trails Horse
- 129
- Trails Hike
- 374
- Trails Trail Running
- 374
- Trails Dirtbike/Moto
- 10
- Trails Observed Trials
- 2
- Trails ATV/ORV/OHV
- 5
- Trails Snowshoe
- 1
- Total Distance
- 301 miles
- Total Descent
- 55,265 ft
- Total Vertical
- 3,794 ft
- Highest Trailhead
- 8,862 ft
- Reports
- 11,532
- Photos
- 549
- Completed Counter
- 154,877
Articles
More Than Miles: Here’s How to Plan the Perfect Runcation
Aug 1, 2025 from outsideonline.com
Running trips—from Utah's desert to Patagonia's peaks—offer the most thrilling (and humbling) adventures this writer's ever experienced.
An Insider’s Guide to the Best Hikes in Boulder, Colorado
Feb 26, 2024 from outsideonline.com
After 25 years of hiking in his hometown of Boulder, guidebook author James Dziezynski reveals his all-time favorite treks in the area. Plus,...
Sub Regions
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Betasso Preserve
- 4
- 1
-
Boulder Open Space
- 1
-
Boulder Valley Ranch / Boulder Reservoir
- 4
- 12
-
CU South Campus
- 5
- 5
- 1
-
Eldorado Canyon State Park
-
Lefthand OHV
- 9
- 35
- 14
- 3
-
Marshall Mesa/Doudy Draw/Flatirons Vista
- 16
- 4
-
Teller Farm Open Space
- 3
-
The People's Crossing Park
-
Valmont Bike Park
- 12
- 20
- 1
- 5
-
Walker Mountain
- 1
- 6
- 7
-
Walker Ranch
- 1
- 1
- 1
Popular Boulder Mountain Biking Trails
• 100 ★ 3.2 • 2 miles • 90 ft • 2,686 •
Mayhoffer Singltree is another connector piece of the Dirty Bismark loop. It was one of the final sections opened. The trail has a very nice easy grade and no rocks at all! It's fantastic for beginners and young 'uns.
• 100 ★ 3.9 • 3,675 ft • 165 ft • 2,007 •
The Loop Link connects the popular Canyon Loop and Benjamin Loop trails. While the loops are direction for bikes, the Loop Link is bidirectional with some exposure and blind corners so caution is recommended. Going from Canyon to Benji,...
• 90 ★ 4.0 • 2 miles • 497 ft • 1,837 •
Benjamin Loop is directional for bikers, and the direction changes approximately every four weeks. Please follow posted signs. The preferred direction from the Link Loop is clockwise (not that you have a choice, just be excited if...
• 90 ★ 3.0 • 1,420 ft • 12 ft • 1,718 •
Singletrack connector from Doudy Draw to Springbook Loop.
• 95 ★ 4.0 • 1 mile • 240 ft • 1,711 •
This trail is the easier direction to climb the Springbrook Loop. The trail hugs the hillside and is also a flowy descent. Half way through it flattens out on the top of the mesa and has great views of the Flatirons. Then it climbs...
• 95 ★ 3.4 • 1 mile • 268 ft • 1,697 •
Springbrook South trail is a short trail that is relatively fast and technical. It is not a steep trail, but lots of small, loose rocks and turns exist. It is an uphill and downhill trail, but it is primarily for downhill. Hiking is...
• 100 ★ 3.0 • 3,990 ft • 12 ft • 1,693 •
A short section of mostly smooth singletrack connecting Community Ditch and MayHoffer Singletree.
• 100 ★ 3.0 • 2 miles • 335 ft • 1,651 •
The Boulder Canyon Trail begins at the mouth of Boulder Canyon and is a 6' wide paved path for the first 1/2 mile. The trail then goes through an underpass under Boulder Canyon Drive and switched to crushed gravel. Running along Boulder...
Boulder Mountain Bike Routes
Marshall Mesa Doudy Draw Loop Featured
★ 4.0 • 12 miles • 988 ft • 14 • Loop •
This route gives a great tour of the best trails Marshall Mesa has to offer. The ride starts at the main...
Marshall Mesa Beginner Ride Featured
★ 4.0 • 5 miles • 272 ft • 1 • Out & Back •
The Boulder Mountainbike Alliance's Recommendation for Easiest Ride at Marshall Mesa. People in Boulder...
North Boulder MTB Featured
★ 5.0 • 12 miles • 854 ft • 5 • Loop •
Starting in 2024, singletrack options north of Boulder just got a whole lot better! The North Sky trail...
Super Betasso via Four Mile Featured
★ 5.0 • 15 miles • 1,506 ft • 7 • Loop •
This is the easiest way to ride Betasso from town. This route starts on the west side of the paved Boulder...
Betasso Loops Featured
★ 3.4 • 7 miles • 950 ft • 9 • Loop •
Betasso Preserve is a great intermediate area close to downtown Boulder. Because of its popularity, bikes...
Lil' Burrito Featured
★ 5.0 • 41 miles • 4,953 ft • 26 • Out & Back •
The Little Burrito (yes, the author knows that "Burrito" is Spanish for little donkey, so this is a...
Photos of Boulder Mountain Bike
Videos of Boulder Mountain Bike
Current Trail Warnings
| status | trail | date | condition | user | info |
|---|---|---|---|---|---|
| East Boulder Trail (Gunbarrel Farm) | Oct 19, 2026 @ 4:29pm (America/Denver) 2 days | Dry | BoulderRunner |
Recent Trail Reports
| status | trail | date | condition | info | user |
|---|---|---|---|---|---|
| Left Hand | Oct 20, 2026 @ 11:28am (America/Denver) 1 day | Dry | CraigiBWrwZ | ||
| Degge Trail | Oct 20, 2026 @ 11:28am (America/Denver) 1 day | Dry | CraigiBWrwZ | ||
| North Sky Trail | Oct 20, 2026 @ 11:28am (America/Denver) 1 day | Dry | CraigiBWrwZ | ||
| Meadowlark Trail | Oct 20, 2026 @ 3:14pm (America/Denver) 1 day | Ideal | WendyBMA BMA | ||
| East Boulder Trail (White Rocks) | Oct 19, 2026 @ 4:29pm (America/Denver) 2 days | Ideal | BoulderRunner | ||
| Broadway Road | Oct 18, 2026 @ 9:04am (America/Denver) Oct 18, 2026 | Unknown | willerules | ||
| Hidden Valley | Oct 7, 2026 @ 1:21pm (America/Denver) Oct 7, 2026 | Unknown | Skyryk | ||
| Walker Ranch Loop | Oct 1, 2026 @ 5:23pm (America/Denver) Oct 1, 2026 | Very Dry | tshralper | ||
| Walker Ranch Alt Line | Oct 1, 2026 @ 5:23pm (America/Denver) Oct 1, 2026 | Very Dry | tshralper | ||
| Josie Heath Trail | Oct 1, 2026 @ 5:23pm (America/Denver) Oct 1, 2026 | Very Dry | tshralper |
Activity Feed
| username | action | type | title | date |
|---|---|---|---|---|
| KyleNK5Am | vote | trail | activity #106331509 | Oct 21, 2026 @ 10:59am 4 hours |
| CraigiBWrwZ | add | report | activity #106299241 and 2 more | Oct 20, 2026 @ 5:17pm 22 hours |
| WendyBMA | add | report | activity #106286614 | Oct 20, 2026 @ 2:15pm 1 day |
| BoulderRunner | add | report | activity #106270552 and 1 more | Oct 20, 2026 @ 9:45am 1 day |
| willerules | add | report | activity #106177274 | Oct 18, 2026 @ 4:16pm 3 days |
Recent Comments
| username | type | title | comment | date |
|---|---|---|---|---|
| trail | ass kicker of a climb but fun going down. I'll... | Sep 21, 2026 @ 3:36pm Sep 21, 2026 | ||
| trail | top third is getting pretty blown out. could... | Sep 1, 2026 @ 6:59pm Sep 1, 2026 | ||
| trail | Not sure what this used to be like, but now... | Jun 13, 2026 @ 3:08pm Jun 13, 2026 | ||
| trail | “What trails do you want to do... | Jun 2, 2026 @ 11:51am Jun 2, 2026 | ||
| report | Marshall mesa and Dowdy all dry and running great | Apr 19, 2026 @ 10:05am Apr 19, 2026 |
Local Badges
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Completionist0 awarded -
Epic Ride 50k10,455 awarded -
Top 10 Trails54 awarded -
10 Black Trails640 awarded -
10 Expert Trails104 awarded -
Completionist0 awarded
Bike & Skill Parks
| name | type | city | rating |
|---|---|---|---|
| Valmont Bike Park | skill park | Boulder |
Activity Type Stats
| activitytype | trails | distance | descent | descent distance | total vertical | rating | global rank | state rank | photos | reports | routes | activity logs |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mountain Bike | 248 | 200 miles | 31,033 ft | 88 miles | 3,793 ft | #84 | #3 | 431 | 11,340 | 35 | 146,356 | |
| E-Bike | 133 | 120 miles | 9,386 ft | 51 miles | 3,793 ft | #905 | #25 | 7,205 | 2 | 5,142 | ||
| Gravel Bike | 124 | 132 miles | 9,226 ft | 53 miles | 3,757 ft | #257 | #7 | 1,952 | 4 | 2,338 | ||
| Adaptive Bike | 71 | 77 miles | 4,990 ft | 32 miles | 3,077 ft | #368 | #8 | 1,565 | 1 | 9 | ||
| Winter Fat Bike | 1 | 1 mile | 23 ft | 3,888 ft | 20 ft | #106 | #44 | 1 | 1 | 3 | ||
| Horse | 129 | 119 miles | 17,073 ft | 53 miles | 3,652 ft | #217 | #14 | 1,637 | 17 | 7 | ||
| Hike | 374 | 297 miles | 53,684 ft | 129 miles | 3,793 ft | #104 | #5 | 113 | 9,845 | 37 | 22,511 | |
| Trail Running | 374 | 297 miles | 53,684 ft | 129 miles | 3,793 ft | #156 | #6 | 4 | 9,845 | 34 | 25,438 | |
| Dirtbike/Moto | 10 | 17 miles | 3,415 ft | 11 miles | 1,991 ft | 1,259 | 1 | 27 | ||||
| Observed Trials | 2 | 7 miles | 1,260 ft | 5 miles | 791 ft | 31 | 2 | |||||
| ATV/ORV/OHV | 5 | 12 miles | 1,739 ft | 7 miles | 1,955 ft | 1,259 | 1 | |||||
| Snowshoe | 1 | 899 ft | 43 ft | 3 | 17 | 24 |
Frequently Asked Questions
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What are the best places to ride in Boulder?
Boulder has 15 areas to explore for mountain biking. The top rated areas are:
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What are the highest rated mountain biking trails in Boulder?
The highest rated mountain biking trails in Boulder are:
- Slopestyle L (4.6/5)
- Corkscrew (4.5/5)
- GZA (4.5/5)
- Brown Town (4.4/5)
- Fourmile Link (4.3/5)
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What is the best time of the year to ride in Boulder?
Based on activity log data, the most popular months to ride in Boulder are:
- September (1,092 activities)
- August (1,078 activities)
- June (956 activities)
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Where can I park to ride in Boulder?
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What is the longest trail in Boulder?
The longest trail in Boulder is Walker Ranch Loop at 7.7 miles. View all trails sorted by distance.
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What are the best & highest rated hiking trails in Boulder?
The best hiking trails in Boulder are: View all hiking trails sorted by popularity score.
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What are the best & highest rated trail running trails in Boulder?
The best trail running trails in Boulder are: View all trail running trails sorted by popularity score.
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How many trails are in Boulder?
Boulder has a total of 404 trails. Of those, 248 are designated for mountain biking. Browse top mountain biking trails in Boulder to find detailed information including difficulty ratings, distances, and trail conditions.
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Which trail has the most elevation gain in Boulder?
The trail with the most elevation gain in Boulder is Walker Ranch Loop with 1,559 ft of elevation gain. View all trails sorted by elevation gain.
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Which trail has the most elevation descent in Boulder?
The trail with the most elevation descent in Boulder is Walker Ranch Loop with 1,574 ft of elevation descent. View all trails sorted by elevation descent.
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What activities are most popular in Boulder?
Boulder supports the following activities: Mountain Biking, E-Biking, Gravel Biking, Adaptive Biking, Horseback, Hiking, Trail Running.
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What bike services are there in Boulder?
The following bike services are available in Boulder:
- Bike Shop (13)
- Race Team (1)
- Trail Association (1)
- Guides & Tours (1)
- Coaching & Camps (1)
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What are the steepest mountain biking trails in Boulder?
The steepest mountain biking trail in Boulder is RZA Climb with an average grade of 27.2%. View all trails sorted by grade.
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Are there any trails with scenic viewpoints in Boulder?
Yes, there are 6 scenic viewpoints marked along trails in Boulder. Some popular viewpoints include: Explore more points of interest to find trails with the best views.
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What trails have the biggest jumps in Boulder?
The trails with the biggest jumps in Boulder are: Browse all mountain bike trails to find trails with jumps and technical features.
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Are the trails open in Boulder?
The overall region status for Boulder is Clear / Green. Out of 300 trails:
- Clear / Green: 259
- Minor Issue / Yellow: 13
- Significant Issue / Amber: 7
- Closed: 21
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What are the trail conditions in Boulder?
Based on trail reports from the past week in Boulder:
- Ideal: 2 trails
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Can I ride an ebike in Boulder?
Yes, Boulder supports e-bike riding. There are 123 trails in Boulder that allow e-bikes. Check the e-bike trails listing for specific trail access details and any local regulations.
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What are the most popular mountain biking routes in Boulder?
The most popular mountain biking routes in Boulder are: View all mountain biking routes in Boulder.
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What type of bike is most common in Boulder?
Based on activity log data, the most common bike types used in Boulder are:
- AM (461 activities)
- XC (210 activities)
- CX (12 activities)
- RD (5 activities)
- Fat (3 activities)
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What is the highest summit in Boulder?
The highest summit in Boulder is Scar Top Mountain at 8,776 ft elevation.
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What are the top sights to see in Boulder?
There are 2 notable sights in Boulder. Some of the top sights include: Explore all points of interest in Boulder.
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What are the most popular Strava Segments in Boulder?
The most popular Strava segments in Boulder are:
- Hwy 36: Overlook -> Cherryvale (25,212 athletes)
- 1st Canyon to 2nd Canyon Bridge (24,786 athletes)
- Highway 36 climb (23,938 athletes)
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What trails are closed in Boulder?
There are currently 21 closed trails in Boulder. The breakdown of all trail statuses is:
- Clear / Green: 259
- Minor Issue / Yellow: 13
- Significant Issue / Amber: 7
- Closed: 21
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Are there accessible or adaptive trails in Boulder?
Yes, there are 71 accessible/adaptive trails in Boulder. View all adaptive trails in Boulder for specific accessibility information.
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Are there local clubs or events in Boulder?
There are 1 local clubs or associations listed in the Boulder directory. Browse the local directory for details.
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Are there any mountain biking guiding or tour operators in Boulder?
Yes, there are mountain biking guiding and tour operators in Boulder: Browse all guiding and tour operators in Boulder.
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What are the most popular mountain biking trails in Boulder?
The most popular mountain biking trails in Boulder are: View all mountain biking trails sorted by popularity.
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What are the best beginner ride trails in Boulder?
The best beginner mountain biking trails in Boulder are:
- North Sky Trail (3.9/5)
- Valmont Paved Pumptrack (5/5)
- South Boulder Creek Path (5/5)
Activities
Trails
Points of Interest
- Eldorado Canyon Visitor Center Information
- Reflection Point Viewpoint
- Anemone Point Viewpoint
- Mallory Cave Sight
- Royal Arch Viewpoint
- Shelter Cabin
- Crags Hotel Ruins Sight
- Continental Divide Overlook Viewpoint
- Shirttall Peak Summit
- South Boulder Peak Summit
- Scar Top Mountain (8,776 ft)
- Twin Sisters Peak (8,694 ft)
- South Boulder Peak (8,543 ft)
- By canadaka
Trailforks & contributors - Admins: BMA, IMBA, WendyBMA, BMA, mattoid, amrosen, getvert, mpopetz, Pumpntrail, andrewbikeboulder
- #4922 - 43,362 views
- boulder activity log | embed map of Boulder mountain bike trails | boulder mountain biking points of interest
Downloading of trail gps tracks in kml & gpx formats is enabled for Boulder.
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