The 9th Annual Louisville Trail Half Marathon, 10K, 5K is a front range favorite among trail runners.. The course is a mostly flat with one beautiful, yet challenging hill that creates an epic vista point of the front range mountains. (Did we mention you do it twice!)

Using the backdrop of the Flat Irons and beautiful Louisville, CO, this race tours the trails and sights of the area offering a breathtaking landscape for this amazing race...

NEW IN 2020: 

  • Back to the "Old 10K Course" (most popular course)

The ERS is now 100% Cupless Racing, meaning we supply the aid stations, while the runner supplies their own bottle, hydration pack, or reusable cup. Please plan accordingly.


Due to continued Covid guidelines, restrictions on participation numbers may apply. We will know more about those limitations in January 2021, when the City of Louisville releases its special event permits and guidelines.

What we know currently...

  • All ERS races in 2021 will be planned as a staggered start for each race category
  • Race waves will be set at 25 runners/ wave with a planned increase based on permit guidelines
  • Race Waves will be separated by 5 min
  • We plan to offer a pre-packaged food bag at the conclusion of the event. Which runners will have the option to take for free. All items within these bags will be pre- packaged snack items.
  • Medals will be individually wrapped (when applicable) 
  • Hosting an awards ceremony in the finish line area will be based on current local guidelines at each event

Race Day Schedule


7:00amHalf Marathon Starts


8:30am10K Starts


9:00am5K Starts


Suggested Amounts

$0.00
$0.00

Location Information

  • Louisville Community Park
  • 955 Bella Vista Dr, Louisville, CO, 80027 US

LIABILITY WAIVER AND RACE AGREEMENT: I know that running or walking a road race is a potentially hazardous activity. I will not enter and run unless I am medically able to do so and properly trained. I assume all risks associated with running or walking this event, including but not limited to the effects of weather, traffic, course conditions. I understand that The Endurance Race Series, the sponsors, the volunteers, and all others assisting in the operations of the event and its supporting and related activities assume no responsibility or liability with respect to my participation in the run or in any related events. Having read this waiver, and knowing these facts, and in consideration of the acceptance of my entry, I for myself and any person entitled to act on my behalf do hereby release the Endurance Race Series, all sponsors, volunteers, together with their employees, contractors, subcontractors, even though liability may arise from negligence or carelessness on the part of persons or organizations named in this waiver and release.
Prior to attending any event each runner must self-screen and stay at home if sick or exhibiting symptoms of Covid-19, or if they or someone they live with have been diagnosed with Covid-19

Maintain physical distancing of at least 6ft whenever possible

All Runners must wear a facemask or face covering before the run in the start area and after the run if socializing in finish areas. Face masks will not be required while on the course.

Please run at your own risk! Each participant acknowledges that Covid-19 is a global pandemic and that infections have been confirmed throughout the US. Each participant understands that the Endurance Race Series cannot guarantee safety or immunity from infection. Each participant understands the uncertainty of the virus, how it may impact their health, and voluntarily assumes all risks associated directly or indirectly with participating in any Endurance Race Series activity. Each participant knowingly and voluntarily waives and releases Endurance Race Series, its staff, volunteers, and sponsors from any and all future claims of any type, including for any harm or loss, personal injury, disease or death. Each participant agrees not to sue Endurance Race Series for any personal injury, death, medical expenses, disability, court costs, attorney fees, and/or other loss


Billing Information

  • Visa
  • Mastercard
  • American Express
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