RUN THE TRAILS. JOIN THE COMMUNITY
Every trail has a story. Every runner has a place.
More than Miles.
More Than a Finish Line
At Endurance Race Series, every mile is an opportunity to connect with nature, with friends, and with a community that believes the journey is just as important as the finish line.
Whether you're lacing up for your very first trail race, chasing a new personal best, tackling your first ultra, or returning for another season with familiar faces, you'll find a place here. Our events bring together runners of every age, ability, and goal, creating an environment where encouragement comes as naturally as the trails beneath your feet.
From sunrise starts and mountain summits to post-race celebrations, volunteer high-fives, and lifelong friendships, ERS is built on the belief that running is better together. Every event is an invitation to challenge yourself, support one another, and become part of something bigger than a single race.
Because at Endurance Race Series, you're not just registering for an event—you're joining a community that celebrates every step of the adventure.
Why Run ERS?
At Endurance Race Series, every runner has a place. From first-time trail runners to experienced ultrarunners, our events are designed to challenge, inspire, and connect people through San Diego's incredible trails. With welcoming race-day experiences, multiple distance options, and unforgettable finish line celebrations, you'll discover that every mile is about more than reaching the finish, it's about becoming part of something bigger.
Runner Retention
The finish line is only the beginning. Year after year, thousands of runners return to ERS for the friendships, familiar faces, supportive volunteers, and shared adventures that make every event feel like coming home. It's more than a race series, it's a community that celebrates every runner, every milestone, and every journey on the trail.
44% of our runners participate in at least three or more ERS events each year.
INCREDIBLE TRAILS
- Explore San Diego's Scenic coastal,
canyon, and mountain trails
EVERY RUNNER WELCOME
-Multiple Distances, beginner
friendly courses, kids races, ultras
COMMUNITY FIRST
- Run alongside supportive runners,
volunteers, and families
MORE THAN RACE DAY
- Finish line festival, expos, music,
and memories that last long after
Trail Race Events
Endurance Race Series
BY THE NUMBERS
4000+
TRAIL RUNNERS EACH YEAR
10
ANNUAL EVENTS
Since 2014
BUILDING SAN DIEGO'S TRAIL RUNNING COMMUNITY
145+
LEGACY RUNNERS
BUILDING THE TRAIL COMMUNITY
Trail Running is not just for adults...
The ERS is excited to offer our very popular "Kid's Dash". These races are geared towards kids 10 years and younger, and will measure about 1/4 mile in distance.
Kids Dash
Volunteers
Volunteers make our events happen. If you are looking to assist us at one of our events, support your fellow trail runners, and earn a FREE* race entry to a future ERS events then look no further.
Volunteer links for each event can be found on the respectful event pages.
*Entry code valued at $115
Join us for the after party!
The ERS offers some of the best post-race food and activities you can find in the trail running community.
Proudly sponsored by some great local companies, we offer grilled hot in the food tent, snacks, coffee, and beer, to name a few options.
Finish Line Festivals
What Runners Are Saying...
Did my first ERS event today and I loved it. No intimidation, great MC, well marked course, started on time, awards on time...it really is the little things! Small and intimate setting and not overwhelming with people is the way I really like to race. Great job!
Nicki L
I love, love, love this race series! Every race is a beautiful course, well marked, awesome swag and bling, and a fantastic after party! So much fun
Jenny T
Love their events! The sites are always so well chosen and the staff and volunteers are very friendly and helpful! Will definitely be returning!
Elisa M
SPONSORS AND PARTNERS
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