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The ERS' Largest Event

The Annual ERS Finale... The 6th Annual Louisville Trail Half Marathon, 10K, 5K has been the Endurance Race Series' largest event the past 5 years... The course is mostly flat with a beautiful, yet challenging hill that creates an epic vista point of the front range mountains.

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...

The Louisville Trail Race offers great a family friendly atmosphere with our post race festivities, so bring the family and enjoy the morning with us! at the Louisville Community Park.

Race Shirts have been ordered, meaning the deadline has passed for ordering a shirt online. if you would still like to purchase a race shirt you may do so on race morning. thank you 


*We have adjusted our prices, so that they do NOT include a race shirt. If you would like to take advantage of the shirt option, it is $5, and can be added in the Swag area of your registration.  For those runners adding the shirt option, we ask that you register at least 10 days prior to race day, to be guaranteed of your shirt order. If you are within the 10 day window, we will ask you to pick up your shirt after the race, from the sizes available. We will do our best to accommodate all requests.

Registration fees

Half Marathon Closed

Registration closed
    1. $70.00
      Nov 1 – Dec 31
    2. $70.00
      Jan 1 – Feb 28
    3. $75.00
      Mar 1 – Aug 15
    4. $80.00
      Aug 15 – Oct 6

10K Closed

Registration closed
    1. $40.00
      Nov 1 – Dec 31
    2. $40.00
      Jan 1 – Feb 28
    3. $45.00
      Mar 1 – Aug 15
    4. $50.00
      Aug 15 – Oct 6

Louisville Site Map

Louisville 10k


Louisville Half




Half and 10k medals


5k medals




Event Schedule

  • October 7 6:00 AM MDT - Race Day Packet Pickup (until 7:45AM)

  • October 7 8:00 AM MDT - Half Marathon

  • October 7 8:10 AM MDT - 10K

  • October 7 8:20 AM MDT - 5K

  • October 7 10:00 AM MDT - Kids Race Start

Contact Information

Event Location

955 Bella Vista Dr, Louisville, CO, United States

Click here to view map