Become a Season Pass Holder


Our very popular "PICK 6" is great for those runners that want to run multiple events with the ERS, but don't have the schedule to join us in a Season Pass.

How it works:

  • Choose any 6 events you want...
    • All Colorado or a mix of Colorado and California races
  • Choose a Race Distance for each event
  • Receive an automatic 25% off your total registration at check out
  • Receive 1 Confirmation number
  • Automatically signed up for each event you chose, no additional paperwork 

"Pick 6 " prices may vary based on which races and distances you choose to participate in.



  1. All our registration prices are adjusted, so they do NOT include a race shirt, if you would like to receive a shirt, they are $5 and are available for selection before checkout. 
    • ALL pre-registered runners that select a race shirt will receive a gender specific tri-blend or cotton/ poly T-shirt upon packet pickup. When registering for your event online you will have the opportunity to select the correct shirt size. (If you choose the shirt option)
  2. Important- Only those people that PRE-register for an event and select the shirt option will be guaranteed to receive a T-Shirt with their registration, while ALL packet pickup and race day registrations will be asked to wait until they have finished the designated event to pick up their race shirt.
    • Please note, that race day registrants will not be guaranteed the correct size shirt if any at all. Thank you for understanding this policy, as we want to make sure those runners that register early do receive the shirt they requested.   We order our shirts about 10 days out from the respective event, so it is our recommendation that you complete online registration no later than that time frame to be guaranteed a shirt of your choosing.
  3. ALL FINISHERS, regardless of distance will receive a medal.

If you register for a specific race distance and need to upgrade or downgrade, you may do so by contacting our staff before the registered event. 

  • $30 Upgrade Fee is required for 10k to Half
  • $15 Upgrade fee is required for 5k to 10k, or 10k to 15k (where applicable)
  • No refunds will be given for downgrading

Thank you for choosing to participate with the Endurance Race Series.  We know there are many events out there to choose from, so your participation is much appreciated. 

We are excited to offer a number of registration options for each of our events and both our series. Runners can choose between the following registration options:

  • Individual Race Registration- Enter into each event separately
  • Pick 6- Register for ANY 6 events at once and receive an automatic 25% off you registration at check out.
    • ​Choose Between California and Colorado races
  • Season Pass- The VIP package! Sign Up for all Races at once for 1 low discounted price.
    • ​​2 Options to choose from
    • VIP Goodie Bags
    • ​Special Season Pass Shirt for each race

​​Finish ALL races you are registered for and receive our "SEASON PASS MEDAL" and "AWARD"

​*Additional Information on our "Pick 6" and Season Pass Options can be found below.  

​**Special Registration Rules/Notes can be found below at the bottom of the page. ​​


The Endurance Race Series is excited to bring back our very popular SEASON PASS registration to the 2018-2019 trail running seasons. We are excited to introduce our California "Sunshine Series" Pass for 2018-2019...

    • ​​All 10 Colorado Races
    • New Season Pass Holders still have opportunity for VIP Goodie Bag, and Season Pass Award
      • ​​Must have completed 2018 Westminster, or virtually make up Westminster race (email for details)
    • ​VIP Runner bag to include but not limited to the following items
      • ​​ERS GEAR (shirts, hat or visor, socks)
      • ​Sponsor Items- Ultimate Direction, Boyers Coffee GC's, Native Eyewear
      • ​Nutrition and hydration items
      • ​Much More

  • ​"THE SUNSHINE SERIES" SEASON PASS- Available Now(Price increase Aug 1)
    • ​​All 5 California Races​​
      • ​​Race Package 1= 3 Half Marathons, 1 15K, 1 10K (Current Price: $275)
      • ​Race Package 2= All 5 10K's​ (Current Price: $210)
    • ​VIP Runner bag to include but not limited to the following items
      • ​​ERS Gear (Shirts, hat or visor, socks)
      • ​Nutrition and hydration items
      • Much More

Information Below

"Pick 6" Registration 

Registration Rules/ Notes: 

2018 CO Season Pass Finisher Medal

Registration Information

ERS events facebook page