Jefferson County Open Space

Jefferson County Open Space (JCOS) manages one of the greatest open space park systems in the country. The abundance of parks and trails is the reason many of us have chosen to live in the Colorado Front Range. The open space properties are cherished by mountain bikers for their wealth of local riding opportunities and, as a result, bicyclists make up approximately half of all the visitors to the parks.

Maps of all the open properties in the park system can be found on this PDF: http://jeffco.us/parks/documents/parks-and-trails-documents/open-space-system-map/

The open space park system started as a citizens' movement led by PLAN Jeffco. After heavy campaigning by 400 PLAN Jeffco volunteers, the Jefferson County voters approved taxing themselves 0.5% to fund the purchase of open space on November 7, 1972.  Jefferson County Open Space was born. The parks and their funding have had to be defended by the citizens of the county several times since 1972.

In addition to these staff members, the  Open Space Advisory Committee (OSAC), a citizens' advisory board, makes recommendations regarding Open Space policy and procedures to Jefferson County's Board of County Commissioners. OSAC holds monthly meetings, open to the public, and are on the first Thursday of each month, beginning at 7 p.m. in the Ponderosa Room of the Jeffco Open Space Administration Building, Suite 100, 700 Jefferson County Parkway, Golden, CO 80401.

COMBA regularly interacts with all of these groups to help ensure the preservation of the open space park system and mountain bikers' access to these properties.

 

Bike Optimized Trail Work with JCOS

Wednesday
24
Aug, 2016

Bike Optimized Trail Work with JCOS

 

Come join us for some sweet singletrack building with Colorado Mountain Bike Association and Jefferson County Open Space Trails Stars.

Bring your: boots, water, snacks, rain gear, TP, and good attitude. Lunch will be provided by our friends at JCOS.

Announcing JOMBA and SWOT

COMBA's Trail Team is working with Jefferson County Open Space to help them understand the needs of mountain bikers and for COMBA to better understand JCOS's needs. It's a great partnership formed over many years, loads of meetings, and many outings. We are now at the point in the relationship where JCOS trusts COMBA to create better, bike friendly trails throughout their system. What does this...Read more

Golden GiddyUp

Sunday
18
Sep, 2016

Golden GiddyUp

We are proud to be working with Jefferson County Open Space and The Golden Giddyup in supporting the Friends Of JCOS program. And we look forward to the first mountain bike race to be held in Golden, CO on JCOS trails on September 18th, 2016!  100% of the proceeds from the Giddyup go back to supporting Friends Of stewardship efforts.

Friends of JCOS Launch a Success, Golden Giddyup September 18th!

On February 23rd, our partners at Wheat Ridge Cyclery hosted the 2016 Friends Of kickoff party and Jefferson County Open Space (JCOS) Celebration. With approximately 120 people in attendance, the evening was a huge success. Gil McCormick opened the evening with celebration of the JCOS staff who have been key players in both flood recovery efforts and in furthering the Friends Of stewardship model...Read more

Friends of Jefferson County Open Space 2016 Launch Party

Tuesday
23
Feb, 2016

Friends of Jefferson County Open Space 2016 Launch Party

Thank you for your support of Friends Of, CoMBA and the JCOS Trails Team over the past couple of years.  We are going to kick off the 2016 season with a celebration of our efforts and all of the great folks who help make it happen.

Beginner Ride #5, Flying J Ranch Park, Sept 19

Saturday
19
Sep, 2015

Beginner Ride #5, Flying J Ranch Park, Sept 19

The monthly beginner ride is Saturday, September 19 at Flying J Ranch Park at 9:00 am. BBQ sponsored by COMBA following the ride!

Women's Ride #5, North Table Mountain Park, September 15th

Tuesday
15
Sep, 2015

Women's Ride #5, North Table Mountain Park, September 15th

The fifth and final COMBA Women's Ride is Tuesday, September 15th at North Table Mountain Park, located in Golden, CO. Ride meets at 5:15 pm at the Tony Grampsas Memorial Sports Complex parking lot. We will ride from Tony Grampsas to the adjacent North Table Mountain Park.

Women's Ride #3, Elk Meadows, July 21st

Tuesday
21
Jul, 2015

Women's Ride #3, Elk Meadows, July 21st

The third COMBA Women's Ride is Tuesday, July 21st at Elk Meadow Park, located in Evergreen at 5:45 pm at the lower lot.

Join us on an all-level, no drop ride! We’ll group the riders into beginner/easy paced, or intermediate/advanced paced. 

Just a reminder, you don't have to be a COMBA member to participate.

Beginner Ride #4, Flying J Ranch Park, Aug 1st

Saturday
1
Aug, 2015

Beginner Ride #4, Flying J Ranch Park, Aug 1st

The monthly beginner ride is Saturday, August 1st at Flying J Ranch Park at 9:00 am. Bikesource will be here with demos and a mobile shop.  Are you new to mountain biking and our incredible Colorado trails? Join COMBA on a friendly "NO DROP" ride paced for beginners on nearby front range trails.

GBS Bike Junkies, Sunday, May 3rd

Sunday
3
May, 2015

GBS Bike Junkies, Sunday, May 3rd

Join Golden Bike Shop for a day of riding bikes and hanging out with fellow bike junkies!

Updated: Women's Ride #2, Alderfer 3 Sisters, June 23rd

Tuesday
23
Jun, 2015

Updated: Women's Ride #2, Alderfer 3 Sisters, June 23rd

New Location! The second women's ride is Tuesday, June 23rd at Alderfer 3 Sisters Park, located in Evergreen at 5:45 pm at the West lot, by the barn. The address is 31677 Buffalo Park Rd. 

Join us on an all-level, no drop ride! We’ll group the riders into beginner/easy paced, or intermediate/advanced paced. 

Just a reminder, you don't have to be a COMBA member to participate.

Women's Ride #1, North Table Mountain, May 19th - CANCELLED

Tuesday
19
May, 2015

Women's Ride #1, North Table Mountain, May 19th - CANCELLED

Due to the wet, soggy, rainy and otherwise unrideable conditions tomorrow, we have cancelled the ride.

Please join us for a beer at Cannonball Creek Brewing Company instead!

Jeffco Open Space to Host Second ‘Trails Talk’ Forum

Wednesday
29
Oct, 2014

Jeffco Open Space to Host Second ‘Trails Talk’ Forum

Join Jeffco THIS Wednesday to discuss New Trail Updates, Apex Opening and Flood Recovery, and Working Group Update.

Final Women's Ride, North Table, Sept 16th

Tuesday
16
Sep, 2014

Final Women's Ride, North Table, Sept 16th

The final women's ride is Tuesday, September 16th at North Table Mountain, located in Golden at 5:15 pm at Tony Grampsas Memorial Sports Complex, then we will ride over!

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