Boulder Mountainbike Alliance
OUR MISSION:
The Boulder Mountainbike Alliance's mission is to serve as a positive voice for mountain biking in the greater Boulder Colorado area by improving the trail experience for all users through social rides and events, advocacy, and trail building.
Great communities build trails, and great trails build community.
To fullfill this mission, the Boulder Mountainbike Alliance works towards three major goals:
Create a Community of Mountain Bikers: Part of creating sustainable trails is ensuring that there will always be a community around to care for and advocate for those trails. BMA can't do its job without a community of bikers who understand and support our mission. And we build that community around a shared love of trails, then back it up with fun social events and group rides.
Advocate for Trail Access: Originally established in 1991 as the Boulder Offroad Alliance (BOA), Boulder Mountainbike Alliance was formed in response to the closure of nearly every trail in the Boulder area to mountain bikes. This group became the only representative organization for mountain bikers who wanted the right to ride legally in Boulder again.
Events
Feb 22, 2024 Join us in Shaping Colorado’s Outdoor Future
Feb 1, 2024 Eagle-Sage Trail Closures
Jan 31, 2024 Coalton Trail Reopening Feb. 1
25
114
446
70
Manage this club?
Recommended Routes: 25
8.0
mi
12.8
km
West Magnolia Tour
Nederland, CO
|
Nederland, CO |
Unknown
Update
|
94 | ||
7.1
mi
11.5
km
Betasso Preserve
Boulder, CO
|
Boulder, CO |
|
359 | ||
11.8
mi
18.9
km
Hall Ranch
Lyons, CO
|
Lyons, CO |
Minor Issues
Update
Some Mud - Antelope and Nelson loop are closed. You can only access the bitterbrush trail.
47 days ago
|
305 | ||
13.1
mi
21.1
km
West Mag Backcountry Big Ride
Nederland, CO
|
Nederland, CO |
Unknown
Update
|
94 | ||
7.8
mi
12.6
km
Walker Ranch
Coal Creek, CO
|
Coal Creek, CO |
Unknown
Update
|
299 | ||
10.4
mi
16.8
km
Marshall Mesa - Doudy Draw Loops
Superior, CO
|
Superior, CO |
|
130 | ||
15.2
mi
24.4
km
Picture Rock/Wild Turkey Loop
Lyons, CO
|
Lyons, CO |
Bad / Closed
Update
16 days ago
|
140 | ||
12.6
mi
20.2
km
Spring Brook Loop
Superior, CO
|
Superior, CO |
|
143 | ||
7.6
mi
12.2
km
Heil Ranch
Lyons, CO
|
Lyons, CO |
Minor Issues
Update
Snowy - It's "open" for snowshoeing, there's 3-6 inches of rapidly melting slush on the trails, and more on the surrounding ground. They'll be closed for mud tomorrow or Tuesday, and it's probably going to be a while before they dry enough to open again.
1 day ago
|
219 | ||
16.3
mi
26.2
km
Super Betasso
Boulder, CO
|
Boulder, CO |
Unknown
Update
|
75 | ||
15.7
mi
25.2
km
Dirty Bismark
Superior, CO
|
Superior, CO |
Bad / Closed
Update
Dry - The Meadowlark portion is closed, but the rest of the loop is in good condition.
80 days ago
|
271 | ||
16.3
mi
26.2
km
South Saint Vrain Figure 8
Nederland, CO
|
Nederland, CO |
Unknown
Update
|
64 | ||
10.1
mi
16.3
km
Ride like a Moto
Niwot, CO
|
Niwot, CO |
Unknown
Update
|
56 | ||
6.7
mi
10.8
km
Post Work Sunset Ride
Erie, CO
|
Erie, CO |
|
45 | ||
10.3
mi
16.6
km
Rhythm & Blues
Nederland, CO
|
Nederland, CO |
Unknown
Update
|
31 | ||
32.8
mi
52.8
km
Heil to Picture to Hall and Back
Lyons, CO
|
Lyons, CO |
|
31 | ||
2.0
mi
3.2
km
Valmont Bike Park - Singletrack Hotlap
Boulder, CO
|
Boulder, CO |
Unknown
Update
|
29 | ||
16.9
mi
27.1
km
The Whole Casino
Central City, CO
|
Central City, CO |
Unknown
Update
|
8 | ||
71.3
mi
114.8
km
Indian Peaks Traverse (IPT)
Boulder, CO
|
Boulder, CO |
Unknown
Update
|
12 | ||
18.1
mi
29.1
km
West Mag to Eldora and Back
Nederland, CO
|
Nederland, CO |
Unknown
Update
|
1 | ||
13.0
mi
21.0
km
The N Bus Loop
Nederland, CO
|
Nederland, CO |
Unknown
Update
|
6 | ||
6.2
mi
9.9
km
Ceran St. Vrain to Miller Rock
Nederland, CO
|
Nederland, CO |
Unknown
Update
|
20 | ||
12.2
mi
19.6
km
East Boulder Trail
Gunbarrel, CO
|
Gunbarrel, CO |
Unknown
Update
|
15 | ||
11.8
mi
18.9
km
Rock Creek Farm Loop
Broomfield, CO
|
Broomfield, CO |
Unknown
Update
|
18 | ||
11.2
mi
18.1
km
Chapman Drive Out-And-Back
Boulder, CO
|
Boulder, CO |
Unknown
Update
|
17 |
Trails: 114
2.5
mi
4.0
km
Bitterbrush - Lower Section
Lyons, CO
|
Lyons, CO |
|
97 | ||
5.3
mi
8.5
km
Picture Rock
Lyons, CO
|
Lyons, CO |
|
127 | ||
2.2
mi
3.6
km
Nelson Loop
Lyons, CO
|
Lyons, CO |
|
72 | ||
1.2
mi
1.9
km
Betasso Link Trail
Boulder, CO
|
Boulder, CO |
Unknown
Update
|
86 | ||
3.3
mi
5.3
km
Canyon Loop
Boulder, CO
|
Boulder, CO |
|
67 | ||
1.4
mi
2.2
km
Bitterbrush - Upper Section
Lyons, CO
|
Lyons, CO |
All Clear
Update
Mostly Dry - One tiny patch of mud at the beginning. The loop at the top is closed.
47 days ago
|
49 | ||
2.3
mi
3.7
km
Benjamin Loop
Boulder, CO
|
Boulder, CO |
|
44 | ||
1.0
mi
1.6
km
Antelope Trail
Lyons, CO
|
Lyons, CO |
|
50 | ||
2.6
mi
4.1
km
Wapiti Trail
Lyons, CO
|
Lyons, CO |
|
54 | ||
1.1
mi
1.8
km
Fast Money
Central City, CO
|
Central City, CO |
Unknown
Update
|
26 | ||
6.0
mi
9.7
km
South Saint Vrain Trail (#909)
Nederland, CO
|
Nederland, CO |
Unknown
Update
|
31 | ||
3.0
mi
4.8
km
Eagle Wind
Lyons, CO
|
Lyons, CO |
|
49 | ||
2.9
mi
4.7
km
Wild Turkey Trail
Lyons, CO
|
Lyons, CO |
|
39 | ||
5.9
mi
9.5
km
South Sourdough (#835)
Nederland, CO
|
Nederland, CO |
Unknown
Update
|
36 | ||
0.7
mi
1.0
km
Black Line
Erie, CO
|
Erie, CO |
Unknown
Update
|
27 | ||
0.1
mi
0.2
km
Dual Slalom
Boulder, CO
|
Boulder, CO |
Unknown
Update
|
10 | ||
2.7
mi
4.3
km
Ponderosa Loop
Lyons, CO
|
Lyons, CO |
|
40 | ||
3.2
mi
5.2
km
School Bus #929
Nederland, CO
|
Nederland, CO |
Unknown
Update
|
25 | ||
0.1
mi
0.2
km
Corkscrew
Boulder, CO
|
Boulder, CO |
Unknown
Update
|
12 | ||
0.1
mi
0.2
km
Large Slopestyle
Boulder, CO
|
Boulder, CO |
Unknown
Update
|
9 | ||
2.2
mi
3.5
km
Doudy Draw
Superior, CO
|
Superior, CO |
Unknown
Update
|
37 | ||
0.1
mi
0.2
km
XL Slopestyle
Boulder, CO
|
Boulder, CO |
Unknown
Update
|
6 | ||
0.1
mi
0.1
km
Medium Slopestyle
Boulder, CO
|
Boulder, CO |
Unknown
Update
|
7 | ||
0.8
mi
1.3
km
Schoolhouse Loop
Lyons, CO
|
Lyons, CO |
|
12 | ||
2.3
mi
3.7
km
Spring Brook Loop North
Boulder, CO
|
Boulder, CO |
Minor Issues
Update
A little snow and a tiny but of mud on a few sections, but mostly dry. Never lost traction.
80 days ago
|
31 | ||
0.1
mi
0.2
km
Small Slopestyle
Boulder, CO
|
Boulder, CO |
Unknown
Update
|
8 | ||
4.9
mi
7.9
km
Tolland Ranch Trail
Nederland, CO
|
Nederland, CO |
Unknown
Update
|
3 | ||
0.3
mi
0.5
km
Short Stack
Nederland, CO
|
Nederland, CO |
Unknown
Update
|
2 | ||
0.5
mi
0.9
km
Lower Fast Money
Central City, CO
|
Central City, CO |
Unknown
Update
|
1 | ||
0.4
mi
0.6
km
Skills Loop
Lyons, CO
|
Lyons, CO |
|
5 | ||
1.5
mi
2.4
km
Aspen Alley Trail #342A
Nederland, CO
|
Nederland, CO |
Unknown
Update
|
17 | ||
0.8
mi
1.3
km
Fourmile Link
Boulder, CO
|
Boulder, CO |
Unknown
Update
|
22 | ||
0.6
mi
1.0
km
The Glades - Outer Loop
Boulder, CO
|
Boulder, CO |
Unknown
Update
|
9 | ||
1.9
mi
3.0
km
Re-Root #927
Nederland, CO
|
Nederland, CO |
Unknown
Update
|
18 | ||
0.7
mi
1.1
km
Blue Trail
Erie, CO
|
Erie, CO |
Unknown
Update
|
22 | ||
1.1
mi
1.8
km
Spring Brook Loop South
Boulder, CO
|
Boulder, CO |
Minor Issues
Update
Snowy, Icy: Some snow\ice at the top past the sign, and some snow near the bottom, but very mostly dry\rideable, no issues with traction.
80 days ago
|
29 | ||
4.2
mi
6.7
km
Hobbit
Nederland, CO
|
Nederland, CO |
Unknown
Update
|
8 | ||
0.7
mi
1.2
km
Green Trail
Erie, CO
|
Erie, CO |
Unknown
Update
|
19 | ||
1.7
mi
2.8
km
Little Raven Trail
Nederland, CO
|
Nederland, CO |
Unknown
Update
|
13 | ||
1.9
mi
3.1
km
Ceran Saint Vrain #801
Nederland, CO
|
Nederland, CO |
Unknown
Update
|
8 | ||
0.3
mi
0.5
km
Dirt 101
Boulder, CO
|
Boulder, CO |
Unknown
Update
|
5 | ||
12.4
mi
20.0
km
Coal Creek Trail
Superior, CO
|
Superior, CO |
Unknown
Update
|
18 | ||
0.9
mi
1.5
km
Sugar Magnolia #926
Nederland, CO
|
Nederland, CO |
Unknown
Update
|
14 | ||
0.9
mi
1.4
km
Marshall Valley
Superior, CO
|
Superior, CO |
All Clear
Update
6 days ago
|
17 | ||
1.0
mi
1.6
km
Observatory Trail #355
Nederland, CO
|
Nederland, CO |
Unknown
Update
|
4 | ||
0.4
mi
0.6
km
Hotlap
Boulder, CO
|
Boulder, CO |
Unknown
Update
|
4 | ||
0.6
mi
0.9
km
Coal Seam
Superior, CO
|
Superior, CO |
All Clear
Update
6 days ago
|
12 | ||
2.9
mi
4.7
km
Left Hand
Niwot, CO
|
Niwot, CO |
Unknown
Update
|
15 | ||
2.7
mi
4.4
km
High Plains
Superior, CO
|
Superior, CO |
Unknown
Update
|
18 | ||
2.1
mi
3.4
km
Flatirons Vista South
Superior, CO
|
Superior, CO |
Unknown
Update
|
26 | ||
1.0
mi
1.7
km
Josie Heath Trail
Coal Creek, CO
|
Coal Creek, CO |
Unknown
Update
|
7 | ||
0.2
mi
0.3
km
Skillz Loop
Boulder, CO
|
Boulder, CO |
Unknown
Update
|
6 | ||
2.3
mi
3.7
km
Wapiti Trail
Nederland, CO
|
Nederland, CO |
Unknown
Update
|
7 | ||
2.1
mi
3.3
km
Interim Joder Trail
Niwot, CO
|
Niwot, CO |
Unknown
Update
|
19 | ||
0.4
mi
0.6
km
Hobbit 3 #927
Nederland, CO
|
Nederland, CO |
Unknown
Update
|
11 | ||
3.7
mi
6.0
km
Community Ditch
Superior, CO
|
Superior, CO |
All Clear
Update
6 days ago
|
23 | ||
2.6
mi
4.2
km
Chapman Drive
Boulder, CO
|
Boulder, CO |
Unknown
Update
|
11 | ||
5.9
mi
9.5
km
Boulder Creek Path
Boulder, CO
|
Boulder, CO |
|
16 | ||
2.6
mi
4.2
km
Meyers Homestead Trail
Coal Creek, CO
|
Coal Creek, CO |
Unknown
Update
|
13 | ||
2.6
mi
4.2
km
Winiger Ridge Trail
Coal Creek, CO
|
Coal Creek, CO |
Unknown
Update
|
6 | ||
2.1
mi
3.3
km
East Boulder Trail - White Rocks Section
Gunbarrel, CO
|
Gunbarrel, CO |
Unknown
Update
|
5 | ||
1.1
mi
1.7
km
Reboot
Nederland, CO
|
Nederland, CO |
Unknown
Update
|
5 | ||
0.8
mi
1.3
km
Whoop-Di-Doos
Nederland, CO
|
Nederland, CO |
Unknown
Update
|
6 | ||
1.3
mi
2.1
km
Foothills South
Boulder, CO
|
Boulder, CO |
Unknown
Update
|
10 | ||
0.5
mi
0.9
km
Sunset Ridge
Erie, CO
|
Erie, CO |
Unknown
Update
|
10 | ||
0.7
mi
1.1
km
Boot
Nederland, CO
|
Nederland, CO |
Unknown
Update
|
2 | ||
2.0
mi
3.2
km
Cottonwood Trail
Gunbarrel, CO
|
Gunbarrel, CO |
Unknown
Update
|
2 | ||
2.9
mi
4.6
km
Blue Dot Trail (#606.1)
Nederland, CO
|
Nederland, CO |
Unknown
Update
|
7 | ||
0.1
mi
0.2
km
Espresso
Boulder, CO
|
Boulder, CO |
Unknown
Update
|
3 | ||
8.8
mi
14.2
km
Lake Link Trail
Broomfield, CO
|
Broomfield, CO |
Unknown
Update
|
8 | ||
0.6
mi
0.9
km
Lookout Trail #926
Nederland, CO
|
Nederland, CO |
Unknown
Update
|
12 | ||
1.9
mi
3.0
km
Sage
Gunbarrel, CO
|
Gunbarrel, CO |
Unknown
Update
|
8 | ||
3.2
mi
5.1
km
Eagle
Gunbarrel, CO
|
Gunbarrel, CO |
Unknown
Update
|
12 | ||
1.1
mi
1.8
km
Prairie Vista
Superior, CO
|
Superior, CO |
Unknown
Update
|
13 | ||
2.3
mi
3.8
km
Meadowlark
Superior, CO
|
Superior, CO |
Unknown
Update
|
9 | ||
1.4
mi
2.3
km
Greenbelt Plateau
Superior, CO
|
Superior, CO |
Unknown
Update
|
17 | ||
2.3
mi
3.6
km
Waldrop Trail
Nederland, CO
|
Nederland, CO |
Unknown
Update
|
9 | ||
0.5
mi
0.7
km
Erie Forest
Erie, CO
|
Erie, CO |
Unknown
Update
|
10 | ||
1.2
mi
1.9
km
Flatirons Vista North
Superior, CO
|
Superior, CO |
Unknown
Update
|
12 | ||
2.8
mi
4.5
km
Coalton
Superior, CO
|
Superior, CO |
Unknown
Update
|
16 | ||
3.6
mi
5.7
km
Boulder Reservoir
Gunbarrel, CO
|
Gunbarrel, CO |
Unknown
Update
|
3 | ||
0.9
mi
1.4
km
Tungsten Loop
Nederland, CO
|
Nederland, CO |
Unknown
Update
|
3 | ||
1.2
mi
1.9
km
Kinnickinnick Loop
Nederland, CO
|
Nederland, CO |
Unknown
Update
|
3 | ||
0.6
mi
1.0
km
Quartz Valley Trail
Central City, CO
|
Central City, CO |
Unknown
Update
|
6 | ||
3.7
mi
6.0
km
Niwot Loop - Lower Section
Niwot, CO
|
Niwot, CO |
|
2 | ||
0.9
mi
1.5
km
Little Thompson Overlook
Lyons, CO
|
Lyons, CO |
|
12 | ||
1.5
mi
2.4
km
355.1D
Nederland, CO
|
Nederland, CO |
Unknown
Update
|
2 | ||
3.3
mi
5.3
km
Rock Creek Trail
Lafayette, CO
|
Lafayette, CO |
All Clear
Update
88 days ago
|
1 | ||
2.3
mi
3.6
km
Niwot Loop - Niwot High School Trail
Niwot, CO
|
Niwot, CO |
Unknown
Update
|
1 | ||
2.5
mi
4.1
km
Niwot Loop - Upper Section
Niwot, CO
|
Niwot, CO |
Unknown
Update
|
1 | ||
0.8
mi
1.3
km
Cowdrey Draw
Superior, CO
|
Superior, CO |
Unknown
Update
|
9 | ||
3.4
mi
5.4
km
South Boulder Creek Trail
Boulder, CO
|
Boulder, CO |
Unknown
Update
|
4 | ||
0.9
mi
1.5
km
Rock Creek Trail
Broomfield, CO
|
Broomfield, CO |
|
5 | ||
2.1
mi
3.3
km
CU South Campus
Boulder, CO
|
Boulder, CO |
Unknown
Update
|
3 | ||
0.8
mi
1.3
km
Yellow Dot Trail (#357.2A)
Nederland, CO
|
Nederland, CO |
Unknown
Update
|
4 | ||
3.1
mi
4.9
km
Davidson Mesa Loop
Louisville, CO
|
Louisville, CO |
Unknown
Update
|
5 | ||
0.6
mi
1.0
km
Little Raven East
Nederland, CO
|
Nederland, CO |
Unknown
Update
|
5 | ||
1.9
mi
3.1
km
Cottontail Trail - Gunbarrel Section
Gunbarrel, CO
|
Gunbarrel, CO |
|
2 | ||
2.2
mi
3.5
km
East Boulder Trail - Gunbarrel Farm Section
Gunbarrel, CO
|
Gunbarrel, CO |
Unknown
Update
|
2 | ||
1.3
mi
2.0
km
Cottontail Trail
Gunbarrel, CO
|
Gunbarrel, CO |
Unknown
Update
|
2 | ||
1.2
mi
2.0
km
Dots Access Road
Nederland, CO
|
Nederland, CO |
Unknown
Update
|
5 | ||
0.8
mi
1.3
km
Red Dot Trail (#357.2B)
Nederland, CO
|
Nederland, CO |
Unknown
Update
|
4 | ||
7.3
mi
11.7
km
LoBo Trail
Longmont, CO
|
Longmont, CO |
|
3 | ||
2.0
mi
3.2
km
North Sheep Mountain Trail
Lyons, CO
|
Lyons, CO |
Unknown
Update
|
2 | ||
2.4
mi
3.8
km
355.1
Nederland, CO
|
Nederland, CO |
Unknown
Update
|
2 | ||
1.6
mi
2.6
km
Mary Miller Trail
Broomfield, CO
|
Broomfield, CO |
|
2 | ||
1.1
mi
1.7
km
Twin Lakes Regional Trail
Gunbarrel, CO
|
Gunbarrel, CO |
Unknown
Update
|
2 | ||
0.4
mi
0.7
km
355.1A
Nederland, CO
|
Nederland, CO |
Unknown
Update
|
2 | ||
2.1
mi
3.4
km
East Boulder Trail - Teller Farm Section
Gunbarrel, CO
|
Gunbarrel, CO |
Unknown
Update
|
1 | ||
1.5
mi
2.5
km
CR 132 West
Nederland, CO
|
Nederland, CO |
Unknown
Update
|
1 | ||
1.3
mi
2.1
km
Twin Lakes Loops
Gunbarrel, CO
|
Gunbarrel, CO |
Unknown
Update
|
4 | ||
1.7
mi
2.7
km
Indian Mesa
Lyons, CO
|
Lyons, CO |
All Clear
Update
79 days ago
|
5 | ||
1.6
mi
2.5
km
North Rim
Boulder, CO
|
Boulder, CO |
Unknown
Update
|
4 | ||
0.9
mi
1.5
km
355.1C
Nederland, CO
|
Nederland, CO |
Unknown
Update
|
1 |