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Trail Conditions
- Unknown
- Snow Groomed
- Snow Packed
- Snow Covered
- Snow Cover Inadequate
- Freeze/thaw Cycle
- Icy
- Prevalent Mud
- Wet
- Variable
- Ideal
- Dry
- Very Dry
Trail Flow (Ridden Direction)
Trailforks scans users ridelogs 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 riders are riding a trail in its intended direction.
The colour categories are based on what percentage of riders are riding a trail in its intended direction.
- > 96%
- > 90%
- > 80%
- > 70%
- > 50%
- < 50%
- bi-directional trail
- no data
Trail Last Ridden
Trailforks scans ridelogs 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 ridelogs 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 rides = more kinetic energy = warmer colors.
- most popular
- popular
- less popular
- not popular
ATV/ORV/OHV Filter
Max Vehicle Width
inches
Radar Time
x
Activity Recordings
Trailforks users anonymized public ridelogs from the past 6 months.
- mountain biking recent
- mountain biking (>6 month)
- hiking (1 year)
- moto (1 year)
Activity Recordings
Trailforks users anonymized public skilogs from the past 12 months.
- Downhill Ski
- Backcountry Ski
- Nordic Ski
Jump Magnitude Heatmap
Heatmap of where riders jump on trails. Zoom in to see individual jumps, click circles to view jump details.
Trails Deemphasized
Trails are shown in grey.
Only show trails with NO bikes.
Save the current map location and zoom level as your default home location whenever this page is loaded.
SaveThis area span the the iconic Flatirons open space area with hiking trails to the tops of South Boulder Peak, Bear Peak, Green Mountain, Flagstaff and Mount Sanitas. For less strenuous climbing, check out the Mesa trail and NCAR and Chautauqua trail heads for mellow loops through meadows and trees.
google parking directions Activities Click to view
- Hike
105 trails
- Mountain Bike
1 trails
- Trail Running
105 trails
- Horse
59 trails
Region Details
- 1
Region Status
Open as of 1 dayStats
- Avg Trail Rating
- Trails (view details)
- 105
- Trails Mountain Bike
- 1
- Trails Hike
- 105
- Trails Trail Running
- 105
- Trails Horse
- 59
- Trails Snowshoe
- 1
- Total Distance
- 70 miles
- Total Descent
- 17,467 ft
- Total Vertical
- 3,202 ft
- Highest Trailhead
- 8,476 ft
- Reports
- 305
- Photos
- 32
- Ridden Counter
- 7,173
Popular Boulder Open Space Mountain Biking Trails
| status | title | difficulty | rating |
|---|---|---|---|
| Chapman Drive |
Photos of Boulder Open Space Mountain Bike
trail: Bear Peak
7 |
Mar 27, 2022 @ 7:24am
Mar 27, 2022
trail: Royal Arch
21 |
Apr 13, 2021 @ 5:42am
Apr 13, 2021
trail: Royal Arch
12 |
Apr 13, 2021 @ 5:42am
Apr 13, 2021
trail: Royal Arch
11 |
Apr 13, 2021 @ 5:42am
Apr 13, 2021
trail: Bear Peak West Ridge
5 |
Oct 5, 2020 @ 1:57pm
Oct 5, 2020
trail: Bear Peak West Ridge
6 |
Oct 5, 2020 @ 1:57pm
Oct 5, 2020
trail: Bear Peak West Ridge
8 |
Oct 5, 2020 @ 1:57pm
Oct 5, 2020
trail: Bear Peak West Ridge
15 |
Oct 5, 2020 @ 1:57pm
Oct 5, 2020
Recent Trail Reports
| status | trail | date | condition | info | user |
|---|---|---|---|---|---|
| Boulder Canyon Trail Fourmile Connection | May 27, 2022 @ 12:05pm 1 day | Dry | jacobdko | ||
| Chapman Drive | May 17, 2022 @ 5:06am May 17, 2022 | Dry | jacobdko |
Activity Feed
| username | action | type | title | date | |
|---|---|---|---|---|---|
 | jacobdko | add | report | Boulder Canyon Trail Fourmile Connection | May 27, 2022 @ 6:54pm 22 hours |
| jacobdko | add | report | Bluebird Road and 4 more | May 22, 2022 @ 12:17pm May 22, 2022 |
| jacobdko | add | report | Chapman Drive | May 17, 2022 @ 1:49pm May 17, 2022 |
| jacobdko | add | report | Amphitheater Trail and 3 more | May 13, 2022 @ 10:33am May 13, 2022 |
| jacobdko | add | report | Skunk Canyon Spur and 4 more | May 11, 2022 @ 8:06pm May 11, 2022 |
Nearby Areas
| name | distance | ||||
|---|---|---|---|---|---|
| The People's Crossing Park | 2.2 km | ||||
| CU South Campus | 5 | 1 | 3.1 km | ||
| Walker Ranch | 1 | 1 | 1 | 3.2 km | |
| Betasso Preserve | 4 | 1 | 4 km | ||
| Valmont Bike Park | 7 | 8 | 2 | 4.7 km |
Local Products
Activity Type Stats
| activitytype | trails | distance | descent | descent distance | total vertical | rating | global rank | state rank | photos | reports | routes | ridelogs |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mountain Bike | 1 | 3 miles | 16 ft | 446 ft | 955 ft | #6,600 | #2,775 | 298 | 2,921 | |||
| Hike | 105 | 70 miles | 17,467 ft | 31 miles | 3,202 ft | #5,712 | #2,628 | 32 | 305 | 9 | 1,895 | |
| Trail Running | 105 | 70 miles | 17,467 ft | 31 miles | 3,202 ft | #5,718 | #2,632 | 305 | 9 | 1,674 | ||
| Horse | 59 | 43 miles | 10,240 ft | 21 miles | 2,851 ft | #1,293 | 14 | 1 | ||||
| Snowshoe | 1 | 899 ft | 43 ft | 8 | 2 |
- By canadaka
Trailforks & contributors - Admins: WendyBMA, BMA, darmabum, getvert, jgebben, mpopetz, Pumpntrail, Iowegian
- #28281 - 1,960 views
- boulder open space activity log | embed map of Boulder Open Space mountain bike trails | boulder open space mountain biking points of interest
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