Summer time has arrived in Northern California and the Bay Area! We have a full running calendar this summer starting with our rain make-up Marin Ultra Challenge to the return of one of our summer trail favorite, Reservoir Dogs at San Pablo Reservoir!  

Our Marin Ultra Challenge still has a few slots open for the new date in both the 50K and 50 Mile distances.

We could use volunteers for The MUC on June 3. If you, friends, family or club members are available and want to support some fellow runners please complete our volunteer form. We will be out there 5:00 AM - 10:00 PM and have plenty of variety of duties available. 

Inside Trail and the runners are so grateful to all our volunteers and the support they give. Plus, you'll earn free racing credits and be entered into raffles from our sponsors throughout the year. 

#RUNITR

Our 2023 racing calendar has all your favorites back on the schedule. Don't miss the chance to run in some of Northern California's most beautiful and challenging trails. You can view our online calendar here.

The Race for Open Space adventure courses awaits!

5/27

BSLT is offering a variety of courses including 8.5- and 9.5-mile courses, and for the hardiest of trail runners, there will be a 21-mile course. New in 2023 a 2-mile family fun run. Get more details and sign up here.

Don't want to run or hike these trails but want to volunteer? Please sign-up to volunteer and support the cause!

Upcoming Events

May 27
Race for Open Space
Big Sur Land Trust 

June 3
Marin Ultra Challenge
Make-up Weather Date

June 17
China Camp

July 1
Golden State Trail Run

July 15
Reservoir Dogs

August 5
Rodeo Valley Trail Run

Click Here for more information