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. 

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  • San Pasqual Valley Trail Race
    San Diego
    Feb 12, 6:30 AM
    San Diego, Bandy Canyon, San Diego, CA 92027, USA
    Welcome to Wine Country and the 5th 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
    Del Mar
    Mar 05, 8:00 AM
    Del Mar, 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.
  • Westminster Half Marathon, 10K, 5K
    Apr 23, 7:30 AM
    Westminster, 10200 W 100th Ave, Westminster, CO 80021, USA
    The 10th 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.
  • Barr Lake Half Marathon and 15K
    May 22, 7:00 AM
    Brighton, 13401 Picadilly Rd, Brighton, CO 80603, USA
  • Mountain Ridge 20 Mile, Half Marathon, 10K
    Highlands Ranch
    Jun 18, 7:00 AM
    Highlands Ranch, 10590 Mountain Vista Ridge, Highlands Ranch, CO 80126, USA


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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



The ERS is proud to offer race and event consulting services to help other organizations make their race visions a realty. 

Services include but not limited too: Race Management, Announcing, Medal and Shirt Design. 

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"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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