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Welcome Trail Family!

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Whether you are a competitive racer, an avid runner, or a trail newbie, the ERS has what you are looking for... Challenging yet beginner friendly courses, spectacular views, family friendly atmosphere, and a fun post race celebration. 

Oh... and free race photos for all runners to enjoy post race. 


  • Westminster Trail Race
    Sat, Jun 24
    Jun 24, 7:00 AM
    Westminster, 10200 W 100th Ave, Westminster, CO 80021, USA
    The 11th Annual event is a great course for those competitive, intermediate, or novice runners. The trails are mix of packed dirt trails , single track, and some minimal bike path.
  • South Bay 24
    Sat, Aug 12
    San Diego
    Aug 12, 7:00 AM
    San Diego, 3020 Coronado Ave, San Diego, CA 92154, USA
    The 2nd annual event has found an official home at Montgomery Waller Community Park in San Diego. The park is located just a few miles from Imperial Beach and Chula Vista. The course will feature a 1.3 mile loop course with a combination of Grass and Bike Path terrain.
  • Louisville Half Marathon, 10k, 5k
    Aug 26, 7:00 AM
    Louisville, 955 Bella Vista Dr, Louisville, CO 80027, USA
  • Snow Mountain Ranch Trail Festival
    Sep 23, 6:30 AM
    Granby, 1101 Co Rd 53, Granby, CO 80446, USA
  • Carmel Valley Trail Race
    Sat, Oct 14
    Solana Ranch Park
    Oct 14, 7:30 AM
    Solana Ranch Park , 13605 Pacific Highlands Ranch Pkwy, San Diego, CA 92130, USA
    Welcome to San Diego's only trail race through beautiful Gonzales Canyon Open Space and Torrey Highlands Community Park. Participants at the 9th annual Carmel Valley trail race, regardless of distance, will experience one of the hillier courses you will find without heading to the mountains.
  • Black Mountain Turkey Burner
    Sat, Nov 25
    Black Mountain Ranch Park
    Nov 25, 7:30 AM
    Black Mountain Ranch Park, 14700 Carmel Valley Rd, San Diego, CA 92129, USA
    Welcome to the Black Mountain Turkey Burner Trail Race. The most technical trail race on the ERS' Sunshine Series schedule. Join us Sunday November 27, 2022, for our 6th Annual event, as we burn off all that turkey (or tofurkey) you may have consumed over the holiday.
  • Dixon Lake 10/10 Trail Race
    Sat, Dec 16
    Cabello Trail Head
    Dec 16, 7:30 AM
    Cabello Trail Head , 3450 E Valley Pkwy, Escondido, CA 92027, USA
    Welcome to the Sunshine Series' newest race... the Dixon Lake 10/10. Join us in beautiful Daley Ranch (Escondido) for the Dixon Lake 10 Miler and 10K.
  • Del Dios Trail Race
    Sun, Jan 07
    Lake Hodges
    Jan 07, 2024, 6:00 AM
    Lake Hodges, Lake Hodges Way, San Diego, CA 92127, USA
    Welcome to the " RACE OF THE GODS" or more commonly known as the Del Dios Trail Race.
  • San Pasqual Valley Trail Race
    Sat, Feb 03
    San Pasqual Valley Staging area
    Feb 03, 2024, 6:30 AM
    San Pasqual Valley Staging area, 13490 Bandy Canyon Rd, Escondido, CA 92025, USA
    Welcome to Wine Country and the 6th Annual San Pasqual Valley Trail Race. This race is as scenic as it gets in San Diego County. Regardless of which distance you choose (there are 3), runners will be treated to epic views as they race along the vineyards and orange groves of San Pasqual Valley.
  • Coast to Crest 10K and 5K
    Sat, Mar 02
    Del Mar
    Mar 02, 2024, 8:00 AM
    Del Mar, 2801 Via De La Valle, Del Mar, CA 92014, USA
    With the exception of the first quarter mile, this is a very flat, very fast course, which is considered a SPRINT COURSE by most, and if you are a runner looking for a new PR, then look no further. Both courses feature spectacular, wide open lagoon views and a DOWN HILL finish.
  • Black Hawk- CANCELLED
    Time is TBD
    Time is TBD
    Golden, 92 Crawford Gulch Rd, Golden, CO 80403, USA
    If you are looking for one of the best "hill" courses the ERS has to offer, than look no further! You can bet this course will keep your HR high, while you take in the surrounding mountain views and terrain.


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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.

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What is Cupless Racing?

The ERS will provide the aid stations on course with water and electrolytes. The runner will be responsible for providing their own hydration vest, bottle, or reusable cup to use at those aid stations. Runners are allowed to fill up as much as needed. 



If you are a local (or national) company looking to be a part of a fun, family-friendly finish line festival at some of the best trail races in Colorado and San Diego, then the ERS has a spot for you. 

Potential Expo Venders click on the link below. Potential sponsors reach out to us HERE

Learn More


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.


"The ERS staff goes out of their way to give you the best trail experience ever"

- Mandi R.

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3220 Erie Parkway

Erie, CO 80516


4061 Oceanside Blvd, Ste N

Oceanside, CA 92056

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