San Diego's Longest Running
Trail Series
Trail Running San Diego County Since 2014
Trail Race Events
Endurance Race Series
About the ERS
The Endurance Race Series (ERS) delivers unforgettable trail running experiences for every level—from first-time runners to seasoned competitors. Founded in 2012, ERS has grown into one of San Diego’s premier trail running communities, hosting 10 events annually and welcoming over 4,000 runners each year.
Our races feature scenic courses ranging from coastal paths to rugged mountain trails, all designed to be both challenging and beginner-friendly. With multiple distance options, kid’s races, top-tier course support, and vibrant finish line festivals, ERS events combine adventure, community, and celebration for runners and families alike.
The ERS Trail Championship
is Here!
Who is the next San Diego Trail Champion? It could be you...
SUNSHINE SERIES
2025-26 CHAMPIONSHIP LEADERBOARD
FEMALE DIVISION:
Karla Khalifa 6:32:21
Liana Tsirklin 8:03:19
MALE DIVISON:
Tom Kaylor 6:50:21
Daigo Yachi 7:04:23
Benjamin Moore 7:14:23
FEMALE DIVISION:
1. Cecila Medina 2:46:58
2. Julie Grodsky 2:47:22
3. Nicoletta Kouris 2:50:05
4. Tiffany Ortenzo 2:52:19
5. Cece Garcia 2:52:57
MALE DIVISON:
1. Stephen Burge 2:31:00
2. Reymundo Ortiz 2:33:03
3. Lucas Westergard 2:33:08
4. Matt Harney 2:47:10
5. Nicholas Worrall 2:56:02
FEMALE DIVISION:
1. Celestine Arambulo 1:17:56
2. Quinn Westergard 1:36:41
3. Laura Temperato 1:37:24
4. Jennifer Worrall 1:38:21
5. Olga Marquez 2:08:11
MALE DIVISION:
1. Mensah Bey 1:09:30
2. Javier Rabago 1:17:27
3. Michael McDaniel 1:20:02
4. Aldo Mendoza 1:22:13
5. Brandon Jones 1:25:43
NOTEWORTHY EVENT TIBITS
Did you know? The average runner uses 2-3 disposable cups at each aid station during a race. That adds up to a staggering amount of waste!
The ERS has continued taking steps toward reducing race-day trash and promoting sustainability. We’re encourage all runners to Race Like You Train by bringing your own hydration solution. Each aid station will have water and electrolytes ready to keep you fueled—simply fill your Speed Cup or flask and keep moving! Together, we can reduce waste and make a positive impact in the running community
CUPLESS RACING
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
The ERS understands the importance and need for volunteers to 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.
If you are looking to volunteer for a specific event(s) then head to that event page and click on the VOLUNTEER NOW button to find your volunteer link for that specific event.
*Entry code valued at $105 and will cover cost of Half Marathon and below distances. Vol. pays difference for longer distances (i.e 50K)
RACE VOLUNTEERS
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 Pancake Breakfast, Premium Sausages, Vegetarian, Coffee, and Beer, to name a few options.
FINISHLINE FESTIVALS
THE NEED TO KNOWS
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All racecourses are subject to change at any time leading up to the race date due to circumstances beyond our control. This also applies to race dates, race times, and trails used.
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Although we would like to get racecourses to their exact and respectful distances, sometimes this may not be possible, and courses may measure longer or shorter than indicated. GPS between products will also always vary.
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Aid Stations will include first aid, water, electrolyte, and nutrition.
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It is the responsibility of the runner to know the course. We mark the courses to the best of our ability with directional signs, mile markers, flour, and volunteers. We are not responsible for course sabotage and non-race personnel misdirecting runners, nor is the ERS responsible for any runner deciding to follow other runners in the wrong direction. If and when racecourses are changed, we will post updated course maps online and onsite race morning.
For additional information and answers to FAQ's regarding this same subject matter please click, HERE
All races meet ATRA event standards.
What Runners Are Saying About the ERS
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