Conejo Open Space Challenge

Here’s your chance to explore some of the best trails in the Conejo Open Space that many people are not familiar with! From March 1st through May 31st the Conejo Open Space Conservation Agency (COSCA) is challenging mountain bikers, hikers, trail runners and equestrians of all ages to try out some trails that  may be new to them. See if you can complete all ten trails! If you do, you will be entered into a raffle and could win a prize donated by some awesome sponsors.

View updates to the Challenge activities towards the bottom of this page, including galleries of photos submitted by participants!

The 12th Annual Challenge runs March 1 – May 31, 2023.

Here are the trails to explore for this year’s Challenge (you can also download as a flyer and the 2023 trail maps). As with last year, we’ve developed route suggestions that include the Challenge trails to help you get to know areas that might be new to you.

To help you find your way, you can download maps to these trails as a PDF document.

There is no fee to participate in the Challenge. If you complete all 10 trails, attend the post-event party (details TBD) to see if you’ve won a prize.

Email your photos or links to GPS tracks to coschallenge@gmail.com to show you’ve completed a segment. If you like, also post your photos on Twitter or Instagram with the tag #coschallenge.

Please follow all posted open space rules and be courteous to other trail users. Please do not use the trails when they are muddy or closed, and stay safe. This is not a race, so take your time and enjoy the experience.

You can support COSCA by making a tax-deductible donation to the Conejo Open Space Foundation (COSF) at cosf.org/donate. COSCA is the agency entrusted with preserving, protecting, and managing the open space resources in the Conejo Valley, including management and maintenance of the trails in this Challenge. Visit conejo-openspace.org or facebook.com/ConejoOpenSpace/ for more information about COSCA.

Participants give their permission for submitted photos to be used by COSCA and COSF on their websites, social media and future promotions.

Updates to Conejo Open Space Challenge activities

Conejo Open Space Challenge !6-day warning! and photo gallery (5/25/2022) - The Conejo Open Space Challenge ends on May 31, only six days from now. If you haven't finished yet, now is the time to pick up the pace. These photos from some of the participants may inspire you to get… See more...
Conejo Open Space Challenge photo gallery for May (5/6/2022) - These photos are mostly from Instagram, with a few from Twitter and a single one that was submitted by email. The Challenge ends on May 31 so you have just over three weeks to complete it! See more...
First photo gallery from the 2022 Conejo Open Space Challenge (3/22/2022) - These photos were all submitted via email by participants of the 2022 Conejo Open Space Challenge. Thanks to the open space enthusiasts who submitted their photos to share! See more...
Announcing the 2022 Conejo Open Space Challenge! (2/8/2022) - Here’s your chance to explore some of the best trails in the Conejo Open Space that many people are not familiar with! From March 1st through May 31st the Conejo Open Space Conservation Agency (COSCA) is challenging mountain bikers, hikers,… See more...
Conejo Open Space Challenge wrap-up for 2021 (6/5/2021) - Of the 193 participants we had in the Challenge this year, 138 finished all 10 trail segments! This is about the same number as 2019, but more than last year's which was interrupted by the COVID-19 pandemic. The photos in… See more...
Only 3 more weeks to submit your photos for the Conejo Open Space Challenge! (5/8/2021) - Rumor has it that 3 dozen or so people have already completed the Challenge. For everyone else, there is just over three weeks to finish! Meanwhile, new photos keep coming in as people explore and experience this great set of… See more...
60 new photos submitted by Conejo Open Space Challengers (4/24/2021) - For 8 weeks running we've been posting photos from people who are participating in the Conejo Open Space Challenge. This week most come via Twitter and email. To fill out the gallery, some older submissions were included. To learn more… See more...
Seventh weekly gallery of photos submitted by Conejo Open Space Challenge participants (4/17/2021) - Every week we get photos submitted by new participants! This week's photos were mostly taken from Instagram. Now we've used photos from 66 open space enthusiasts! To learn more about the Conejo Open Space Challenge, visit our COS Challenge page. See more...

View all the news and updates about the Conejo Open Space Challenge!