Endurance Race Series

Endurance Race Series Avid trail racer, or trail beginner the ERS offers challenging beginner friendly courses, spectacular views, and family friendly environments.

Whether you are looking for scenic single track, or a challenging mountain course we have the race for you. Welcome to the Endurance Race Series, home to 12 total trail races in Colorado and California. Whether you are a competitive trail racer, an avid runner, or a trail beginner, our races have what you are looking for... 50K, Half Marathons, 10K, and NOW 24 Hour races! If you are looking for a

stroll along the water, some scenic single track, or a challenging hill course, the ERS prides itself on offering trail runners the BEST race experience and atmosphere in the industry. Every event within the ERS, offers multiple race distance options, great course support, kid's races, and finish line festivals that the entire family can enjoy with music, food, games, raffles, and plenty of beer (for those over 21 years, of course). OUR MISSION:
It is the mission of the Endurance Race Series to provide competitive, quality events to the runners in the trail running community, while providing an entertaining, relaxing, family friendly atmosphere to those spectators and sponsors in attendance.​

🇺🇸 HAPPY LABOR DAY!Today we’re celebrating the hard work that keeps our communities moving, including all of the runners...
09/04/2026

🇺🇸 HAPPY LABOR DAY!

Today we’re celebrating the hard work that keeps our communities moving, including all of the runners, volunteers, race crews, and supporters who help make the ERS community what it is.

And since a long weekend is always a good excuse to put another race on the calendar, we’re taking 15% off ERS race registration! From 9/4–9/7 use code LABOR2026 at checkout. www.enduranceraceseries.com

Enjoy the long weekend, get outside for some miles, and we’ll see you on the trails!

RUN CLUB SPOTLIGHT 🔦Next up in our series highlighting the groups bringing runners together across San Diego County is M...
09/03/2026

RUN CLUB SPOTLIGHT 🔦

Next up in our series highlighting the groups bringing runners together across San Diego County is Michi Brewing Run in San Marcos!

Every Tuesday evening, the crew meets at Michi Brewing () for 3 - 5 miles mixing trails and roads around the area. And if you know San Marcos, you know there are going to be some hills involved. All runners and paces are welcome, so come ready for some miles, a few climbs, and good company.

📍 Michi Brewing | Tuesdays at 5:45PM
🏃 3–5 mile options | Trails + Road | All paces welcome
🙌 Run Leaders Lori Engle & Patrick Towne

Stick around after the run and hang out with the crew at Michi Brewing!

NEW RACE TEAM MEMBERHelp us welcome Justin Nucum () to the ERS Race Team and Ambassador crew!Justin’s trail running jour...
09/01/2026

NEW RACE TEAM MEMBER

Help us welcome Justin Nucum () to the ERS Race Team and Ambassador crew!

Justin’s trail running journey started 11 years ago while training clients for obstacle course races. What started as part of the training quickly became a love for getting outside, exploring new mountains, chasing peaks and waterfalls, and catching early morning sunrises on the trail. He also mixes trail running with CrossFit, HYROX, and other hybrid-style training.

Justin is based in Orange County and runs with the HYROX OC Run Club. His favorite local trails are around Newport Coast and Crystal Cove, and when it comes to ERS, the South Bay 24 Hour and Valencia Trail Race top his list.

We’re excited to have Justin joining the team. Give him a big ERS welcome in the comments! 👇

MEDAL MONDAY 🏅The Dixon Lake Trail Races will be held December 12th, and this year’s race shirt and finisher medals are ...
08/31/2026

MEDAL MONDAY 🏅

The Dixon Lake Trail Races will be held December 12th, and this year’s race shirt and finisher medals are officially here!

Dixon Lake is not the place to come looking for flat miles. The courses take runners through the trails of Daley Ranch with a mix of singletrack, dirt service roads, plenty of climbing, and some seriously good views. If you’re taking on the 10 Miler, you’ll make the climb to Stanley Peak for 360 degree views from the top.

📅 December 12th, 2026
📍 Daley Ranch, Escondido
🏃 5k | 10k | 10 Miler

Pick your distance, get ready to climb, and earn one of these at the finish line.

🌄 ERS Friday Trailhead: Hosp GroveTucked right into Carlsbad, Hosp Grove is a smaller trail system that can still give y...
08/28/2026

🌄 ERS Friday Trailhead: Hosp Grove

Tucked right into Carlsbad, Hosp Grove is a smaller trail system that can still give you a solid workout. The trails wind through a historic eucalyptus grove (dating back to 1908), with plenty of shade, packed dirt, rolling terrain, and short climbs and descents that add up quickly when you start connecting loops.

There are about three miles of trails within the grove, but it’s easy to put together a 4–6+ mile run by repeating and connecting different sections. Along the way, you’ll also find spots with views toward Buena Vista Lagoon and the coast.

📍 Jefferson St or Monroe St trailheads
🏃‍♂️ 3 miles of trails, 4–6+ miles with added loops
⛰️ Easy

Hosp Grove is a great option for a shorter trail day, some hill repeats, or an easy run under the eucalyptus trees without having to leave the city.

Death March Running Co has our favorite runner hats… we’ll be on the lookout for an upcoming Hat collab during this year...
08/28/2026

Death March Running Co has our favorite runner hats… we’ll be on the lookout for an upcoming Hat collab during this years trail season. These hat will be 🔥

RUN CLUB SPOTLIGHT 🔦San Diego has an incredible run club community, and we’re kicking off a new series highlighting the ...
08/27/2026

RUN CLUB SPOTLIGHT 🔦

San Diego has an incredible run club community, and we’re kicking off a new series highlighting the groups bringing runners together across the county.

First up is San Diego Trail Runners (). Every Monday evening, the crew meets at Mission Trails for about four miles on the trails. All runners and paces are welcome, and no one gets left behind. It’s a great group for meeting more trail runners, exploring Mission Trails, and starting the week with some miles and good company.

📍 Mission Trails Regional Park | Mondays at 6PM
🏃 Avg. 4 miles | Trails | All paces welcome
🙌 Run Leaders Daniel Smith, Walter Bueno & Deanne Ross

Check on Instagram each week for the meetup location.

Know a San Diego run club we should spotlight next? Tag them below! 👇

08/27/2026

Rewind 5K community Run!!! Thx to the trail running community for showing up and showing out tonight! I am so very lucky to be. Part of this community!

The ERS community is so much bigger than the runners wearing the bibs. It’s the volunteers filling cups, working aid sta...
08/26/2026

The ERS community is so much bigger than the runners wearing the bibs. It’s the volunteers filling cups, working aid stations, helping at the start and finish, cheering when you need it most, and giving up part of their day to make sure everyone else has a great race. ❤️

Our runners may be the ones crossing the finish line, but it takes an entire community behind them to make race day happen. To our volunteers, supporters, crew members, and cheerleaders, thank you for showing up for our runners and for ERS. We couldn’t do this without you.

MEDAL MONDAY 🏅🦃The Black Mountain Turkey Burner is coming up November 28th, and this year’s shirt and finisher medals ha...
08/24/2026

MEDAL MONDAY 🏅🦃

The Black Mountain Turkey Burner is coming up November 28th, and this year’s shirt and finisher medals have officially been revealed!

Thanksgiving weekend wouldn’t be complete without trading leftovers for some trail miles at Black Mountain. Come burn off the pie, take on the trails, and earn some new ERS hardware for the collection.

📅 November 28, 2026
📍 Black Mountain Ranch Park, San Diego
🏃 5K | 10K | Half Marathon

Who’s earning one of these on Thanksgiving weekend?

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