Conejo Open Space Foundation – Help us to support your local open space

Preserve, Promote, and Protect the Open Space The Conejo Open Space Foundation (COSF) is a 501(c)(3) nonprofit corporation formed in 1995 to promote, support and help maintain the open space and trail system of the Conejo Valley, and to educate visitors as to their roles as custodians and protectors of the open space and the environment. We support and help fund ongoing programs sponsored by the Conejo Open Space Conservation Agency (COSCA). We are funded through individual, business, and corporate donations and grants. Funds received by COSF are highly leveraged through the extensive use of unpaid community volunteers and other in-kind donations.
Educate We volunteer to protect and preserve our precious open
space. One great way to do this is by educating the youth of our community. Interested in working with Conejo Valley fourth graders? Join us at our next Trails Education Days.
Fund Raise The Conejo Open Space Foundation raises funds for many outdoor projects, such as the bridge crossing in Hill Canyon, Bike Bells, and Trails Education Days. Support our efforts by making a donation on our Giving page.
Volunteer The Conejo open space wouldn’t be the same without the hundreds of people who give their time and energy. The COSCA volunteer corps offers many ways to stay involved in the open space. Join us and make a difference today!
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Latest Updates (View all the updates.)
It’s New Map Monday in Lang Ranch: Moderate Lang Ranch Loop (5/23/2023) - Highlights Moderate hike of 4 miles Good for conditioning because the Alapay and Meadow Vista Trails are quite steep Good views of Simi Valley and Lang Ranch Open Space Alapay Trail is one of the segments of the 2023 Conejo Open Space Challenge (https://cosf.org/challenge; colored green on the map) Description This is not a very long hike, but both Alapay and Meadow Vista Trails are pretty steep, so this loop will give you a good workout whichever direction you take the loop. Please tread and speak quietly at and near the trailhead so as not to disturb the nearby residents.… (read more...) A gallery of 36 more Open Space Challenge photos before it ends in a few days (5/20/2023) - If you haven't completed The Challenge yet, you have less than 2 weeks before it ends on May 31. If you want to be eligible for some prizes at the June 2 completion celebration, you better get hopping! This is the fifth gallery of photos from Challenge participants. The number of photos to display is decreasing as more and more people are finishing and so have no more to submit. Remember, the completion celebration, with lots of prizes for the people who have finished, will be held June 2 at 6 pm. More details will be available soon. (read more...) May 31 is the last day of the Conejo Open Space Challenge! (5/18/2023) - Now that the trails have (mostly) dried up after this winter's rains, now is a good time to get out and finish The Challenge! The last day is Wednesday May 31, just over two weeks from now. The wildflowers next to the trails and on the hillsides are spectacular this year thanks to the rain. There's an amazing growth of bright pink Owl's Clover next to the Alapay Trail, for one example. Here's the fourth gallery of photos from Challenge participants. You may notice that some trails are getting a little overgrown with mustard and other weeds. That's not enough… (read more...) Lynne Connell Henderson is Our April ‘You in the Conejo’ Winner! (5/1/2023) - April's “You in the Conejo” winner is Lynne Connell Henderson, whose selfie featured her with friends on a Wildwood Regional Park trail bridge (at right). “A trail bridge” was the challenge subject for April. You can check out other entries on Facebook and Instagram at the hashtag #youintheconejo. We don't have an official "runner-up" category, but we also loved. our board member Steve Johnson's entry (below) featuring what he says is the open space's smallest bridge—and we believe him! It's near the bottom of. the Powerline Trail. And if you’re new to this, here’s a recap of the “You in… (read more...) Photos from two months of the Conejo Open Space Challenge (4/29/2023) - Here’s the third gallery of photos from people hiking and riding our local trails to complete the Conejo Open Space Challenge. There is one month to go - still plenty of time to complete The Challenge, even if you haven't started yet! The vast majority of photos are being submitted by email to coschallenge@gmail.com as were all of these. Don’t see any of your photos here? Maybe they’re too small – the preferred minimum size is 800 x 600 pixels but we used a few that were as small as 640 x 480. But we like them bigger so we… (read more...) It’s New Map Monday in North Ranch: Wishbone Loop to Bowfield Trail (4/17/2023) - Highlights Difficult hike of 5.7 miles with 1300' of climbing Good for conditioning because the Alapay and Meadow Vista Trails are quite steep Good views of Simi Valley and Lang Ranch Open Space Bowfield and Aqiwo Trails are two of the segments of the 2023 Conejo Open Space Challenge (https://cosf.org/challenge; colored green on the map) Masses of poppies blooming on Aqiwo Trail in April! Description Much of this route is moderately steep so you quickly get to an elevation with great views in all directions that are constantly changing. This steepness makes for a great workout, however, it will be… (read more...)
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