An event for trail runners, hikers, mountain bikers & equestrians in the #ConejoOpenSpace. Simply complete all ten trails from March 1 to May 31, 2026
Thousand Oaks, CA
Joined October 2011
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This completes the 2026 #coschallenge, hope you all enjoyed the adventure and discovered trails you may have never found. What an enormous privilege to live near beautiful open space! Thank you to our sponsors below!
Congratulations on completing the Challenge! Hope you can make it to the raffle of prizes from our sponsors.
June 5th, 6pm Conejo Creek North Park, Lakeside Area. Only attendees are eligible for prizes.
And new this year there will be a taco bar provided by the @COSFoundation
That’s a wrap on the 2026 #coschallenge, be sure everyone who participated sends their photos or GPS files to [email protected] to have your participation counted for the raffle!
#CosChallenge
#10 of 10 in the @COSChallenge - Hidden Meadow!
Beautiful, accessible trail with great views of Lang Ranch open space.
Thanks to @COSFoundation for organizing another great challenge in 2026!🙏🏻
Finals days of the #coschallenge for sure! Be sure everyone participating sends their photos or GPS tracks to [email protected] to have your participation counted for the June raffle!
#9 of 10 in the @COSChallenge - Brookview Trail.
Nice views of Westlake and Lake Sherwood!
Getting down to the final days of the #CosfChallenge!
@COSFoundation
We’re entering the home stretch of the #coschallenge, with the Memorial Day Weekend approaching, now is a great time to venture out on those trails!
#7 of 10 in the @COSChallenge - Plateau Rim Trail.
Conejo Canyons is one of my favorite areas to hike! So glad this was included in the 2026 Challenge.
The hike up to Eliot peak always delivers great views!
@COSFoundation
Beautiful views and flowers still in bloom-exploring the #coschallenge trails is a great Mother’s Day activity!
#7 of 10 in the @COSChallenge - Plateau Rim Trail.
Conejo Canyons is one of my favorite areas to hike! So glad this was included in the 2026 Challenge.
The hike up to Eliot peak always delivers great views!
@COSFoundation
One more month to go on the #coschallenge! Still time to start and experience views like this for yourself!
#coschallenge
#5 of 10 in the @COSChallenge - Saddle Pass!
Beautiful views of Simi Peak and the Conejo Valley. ❤️ the lupine and poppies too!!
@ConejoOpenSpace
So many beautiful views of the surrounding valley on the #coschallenge trails
#coschallenge
#4 of 10 in the @COSChallenge - Skelton Canyon. Nice views of the Conejo Valley!
@ConejoOpenSpace
Enjoy an adventure in the woods on the #coschallenge trails!
#coschallenge
#3 of 10 in the @COSChallenge - Lindero Creek. A short but beautiful trail that runs through the woods along a stream. Gorgeous oaks and very tranquil!
@ConejoOpenSpace
We’re almost halfway through the #coschallenge which means if you haven’t started, go ahead and venture out on your first trail! An instagram user posted a photo below from the trails, so many unique sights you can experience on all 10 trails!
Gorgeous views of our local trails! Join the #coschallenge and discover new trails!
#Coschallenge
Trail #2 of 10 in the @COSChallenge - Vista Del Mar.
Made it into a beautiful 6-mile loop around Dos Vientos.
Twin Ponds are full from the recent rains and the monkey flowers are starting to bloom!
@COSFoundation @TOAcornNews @VisitConejo
An instagram user found some shade recently…a great reminder to hike early or make plans to get out on the #coschallenge trails when the cooler weather returns!
These kinds of views can be seen on the 10 trials of this year’s #coschallenge. All the info and maps are available on the link in the profile
#coschallenge
Trail 1 of 10 in the @COSChallenge -
Palomino! Wonderful to see the poppies and lupine blooming.
So great the Challenge is back with a great selection of trails!👏👏
🙏🏻 @COSFoundation
@VisitConejo @TOAcornNews
The 2026 #coschallenge begins today! You have three months to complete the 10 trails but be sure to make your plans as summer will be here before you know it! Trail maps and info is available by clicking the link in the profile
Announcing the 2026 #coschallenge! The 15th year edition features 10 trails to discover and enjoy!
That’s a wrap on the 2025 #coschallenge, all are welcome to join us for the raffle this Friday, June 6th, 6pm at Conejo Creek North Park, Lakeside area. Those who completed all 10 trails can win prizes! Thank you to our sponsors for another great year!
As spring turns to summer, many have enjoyed this year’s #coschallenge, which has about two more weekends left to start or complete. Be sure to send your photos or GPS files to [email protected] to have your participation counted and entered for the June raffle!
Congratulations on completing the #coschallenge! A great trail to finish on, be sure to check out the beautiful tribute to those of you who still need to complete the challenge.
#10 of 10 in the @COSChallenge - White Sage trail. Or maybe it should be called Black Mustard trail!
Heartbreakingly beautiful tribute to Kyle Jaeger by his family - gone far too soon.😢
@COSFoundation
