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.​

🌄 ERS Friday Trailhead: Mt. WoodsonFew trails in Southern California are as recognizable as Mt. Woodson. Between the swe...
06/19/2026

🌄 ERS Friday Trailhead: Mt. Woodson

Few trails in Southern California are as recognizable as Mt. Woodson. Between the sweeping views, massive granite boulders, and the famous Potato Chip Rock, it's easy to see why this trail is a favorite among hikers and trail runners alike. Starting from Lake Poway, the trail gradually gives way to steeper climbs as it winds through chaparral-covered hillsides and impressive rock formations. The higher you climb, the bigger the views become.

This trail is a great training ground for runners preparing for longer races, bigger climbs, and mountain adventures. The route is exposed for much of the climb, so bring plenty of water, especially during warmer months.

📍 Lake Poway Trailhead
🏃‍♂️ 7–10+ mile route options
⛰️ Moderate to Difficult

Mt. Woodson is tough, scenic, and one of those trails that keeps runners coming back year after year.

📸:

06/18/2026

For Omar (Omar Hernandez), trail running is about much more than miles and finish lines.

Some of his favorite memories on the trails are connected to his mom, who encouraged him to get outside, explore, and send her photos from his adventures. Today, those memories continue to inspire him every time he heads into the mountains. The trails have become a place to reflect, remember, and stay connected to the lessons and encouragement she gave him throughout his life.

Thank you, Omar, for sharing your story and reminding us that sometimes the people who inspire our journeys are with us every step of the way.

Welcome to the ERS family, ZICO! 🥥We’re excited to announce that ZICO Coconut Water will be joining the Endurance Race S...
06/16/2026

Welcome to the ERS family, ZICO! 🥥

We’re excited to announce that ZICO Coconut Water will be joining the Endurance Race Series as our official Food Tent Sponsor for the 2026/2027 season. Runners can look forward to finding ZICO products at every ERS event this year, bringing a refreshing way to recover, rehydrate, and celebrate after a day on the trails.

From start line nerves to finish line smiles, we’re proud to partner with a brand that knows the importance of staying fueled for adventure. Be sure to stop by the food tent and grab a ZICO at your next race.

Who else is still thinking about the inaugural Mission Trails Twilight Runs? From the late afternoon start to the mile...
06/11/2026

Who else is still thinking about the inaugural Mission Trails Twilight Runs? From the late afternoon start to the miles under the stars, runners got to experience one of San Diego's most iconic trail systems in a whole new way. The climbs felt a little steeper, the sunsets hit a little different, and the finish line energy carried well into the evening.

Most importantly, it marked the return of trail racing to Mission Trails Regional Park for the first time in more than a decade, making it a special day for so many runners in our community.

Take a look back at some of our favorite moments from race day. We already can't wait to do it again!

COMMUNITY SPOTLIGHT 🔦If you've ever questioned your life choices halfway up a climb, Nicoletta () can relate. She loves ...
06/09/2026

COMMUNITY SPOTLIGHT 🔦

If you've ever questioned your life choices halfway up a climb, Nicoletta () can relate. She loves being outside, enjoying San Diego's beautiful weather, and finding adventure on the trails. The hills and rocky terrain challenge her every time, often leading to thoughts like, "Why did I sign up for this?" But the feeling of accomplishment at the finish line always keeps her coming back for more.

Nicoletta loves every ERS race, but Del Dios and San Pasqual are two of her favorites thanks to the Greek mythology theme and the wine waiting at the finish line. Like many runners, she gets nervous before every race, but once the race starts, she's all smiles.

What keeps her coming back is the ERS community, the positive vibes, welcoming runners, and friendships she's made along the way. We're glad you're part of the ERS family, Nicole! 👏

🔥 JUNE PRODUCTS OF THE MONTH This month we're featuring two of the most popular shirts in the TRL Gear lineup:👑 Trail Qu...
06/08/2026

🔥 JUNE PRODUCTS OF THE MONTH

This month we're featuring two of the most popular shirts in the TRL Gear lineup:
👑 Trail Queen ¾ Sleeve Tri-Blend Tee
🌲 Built for Trails Tri-Blend Tee

Both are on sale for 15% off throughout the month of June.

Built for ERS race weekends, local trail adventures, and the everyday miles that get you there. Grab yours before June is over.

🛒 TRLGear.shop

🌄 ERS Friday Trailhead: Monserate MountainIf you're looking for a trail that delivers maximum reward for your effort, Mo...
06/05/2026

🌄 ERS Friday Trailhead: Monserate Mountain

If you're looking for a trail that delivers maximum reward for your effort, Monserate Mountain should be on your list. The mileage may be short, but the climb is no joke. What you get in return are sweeping views, a great hill workout, and a ridgeline that makes every step worth it.

Whether you're training for your next race, chasing vert, or just looking for a new adventure in North County, this Fallbrook favorite checks all the boxes.

📍 Fallbrook
🏃‍♂️ 4–6 mile loop options
📈 1,100–1,300 feet of gain
⛰️ Moderate to Difficult

Who's run Monserate before? 👇

06/04/2026

Not everyone starts their running journey by signing up for a race. For Virginia (), it started with hiking. Time spent on the trails eventually turned into running, and running opened the door to an incredible community of people who share a love for being outside.

As the Co-Founder of Santa Mujeres Run Club (), she’s discovered that some of the best parts of trail running happen before and after the run. The conversations, friendships, encouragement, and sense of belonging keep her coming back week after week.

Thank you Virginia for sharing your story and passion for trail running with others.

🌎 Happy Global Running Day!Somewhere today, someone is heading out for their very first mile. Someone else is chasing a ...
06/03/2026

🌎 Happy Global Running Day!

Somewhere today, someone is heading out for their very first mile. Someone else is chasing a PR. Someone is training for a 5k, a marathon, a 100 miler, or simply getting outside for a little fresh air after a long day. That's one of the things we love most about running. It doesn't care where you started, how fast you are, or what your goals look like. It just asks you to take the next step.

At Endurance Race Series, we're grateful for the thousands of runners who have joined us on the trails over the years. The early morning starts, the finish line celebrations, the aid station volunteers, the friendships made on course, and all the miles in between are what make this community so special.

Get outside, enjoy some miles, and celebrate the simple act of putting one foot in front of the other.

What are you running today?

👥 NEW IN 2026!Introducing the "SOUTH BAY SOCIAL", a shorter category for our South Bay 24 Hour event. Join us for a rela...
06/02/2026

👥 NEW IN 2026!

Introducing the "SOUTH BAY SOCIAL", a shorter category for our South Bay 24 Hour event. Join us for a relaxed morning of trail miles, community, and good vibes. Run, walk, or simply enjoy the atmosphere while experiencing the South Bay 24 in the most beginner-friendly way possible. No race pressure, just a little "loopy" fun!

The "Social" does NOT include awards, but runners do receive a finisher medal. Limited to 50 Runners and this category will sell out. Register today and let's get social!
https://www.enduranceraceseries.com/south-bay

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92056

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Thursday 9am - 5pm
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