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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  • South Bay 24
    Sat, Aug 13
    Aug 13, 7:00 AM
    Bonita, 5102 Sweetwater Rd, Bonita, CA 91902, USA
    This one-off event will feature a flat 1.9 mile loop course in Sweetwater Regional Park in Bonita, CA. Runners will have 24 hours to complete as many loops (miles) as possible.
  • ERS Rewind 5K
    Wed, Aug 24
    Barefoot Lakes
    Aug 24, 6:30 PM
    Barefoot Lakes, Barefoot Lakes Pkwy, Colorado 80504, USA
    The Endurance Race Series is celebrating 10 Years on the trails in Colorado, and what better to party it up is than host a FREE 5K trail race!! This 5K loop course held at Barefoot Lake's Peninsula Park will be held on WEDNESDAY NIGHT AUGUST 24 and will begin at 630pm.
  • Louisville Half Marathon, 10k, 5k
    Aug 27, 7:00 AM
    Louisville, 955 Bella Vista Dr, Louisville, CO 80027, USA
  • Snow Mountain Ranch Trail Festival
    Sep 17, 6:00 AM
    Granby, 1101 Co Rd 53, Granby, CO 80446, USA
  • Carmel Valley Trail Race
    Sat, Oct 15
    San Diego
    Oct 15, 7:30 AM
    San Diego, 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
    Mon, Nov 28
    San Diego
    Nov 28, 7:30 AM
    San Diego, 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 17
    Dec 17, 7:00 AM
    Escondido, 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 08
    Lake Hodges
    Jan 08, 2023, 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. This 8th Annual event is located at beautiful Lake Hodges in Escondido, CA.
  • San Pasqual Valley Trail Race
    Sat, Feb 04
    Feb 04, 2023, 7:00 AM
    Escondido, 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.


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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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