The "Grandfather" or maybe the "Godfather" of the ERS. This is the race that started it all, and the race that every runner must do if looking to put feet to dirt... (and cool off off by jumping in the reservoir)

Septmeber 16th, 2017, will see the 8th Annual Denver Trail Half Marathon and 10k, hit the trails once again at beautiful Cherry Creek State Park in Aurora, CO.  The race will start and finish on the West side of the park at Hobbie Hill, next to the marina. 

Detailed parking information for the 2017 race will be announced 2nd Qtr 2017. Runners will have the option of parking inside the state park for a daily fee or to park outside at Cherry Creek High School and walk in (about 5 min walk).

Registration Fees

10K

Nov 1 - Dec 31 $35.00
Jan 1 - Mar 31 $40.00
Apr 1 - Jul 15 Current Price $45.00
Jul 16 - Sep 13 $50.00

Half Marathon

Nov 1 - Dec 31 $65.00
Jan 1 - Mar 31 $70.00
Apr 1 - Jul 15 Current Price $75.00
Jul 16 - Sep 13 $80.00

Denver Half Marathon

Denver 10k

Site Map

Event Schedule

  • September 16 06:00 AM MDT - Race Day Registration

  • September 16 08:00 AM MDT - Half Marathon Start

  • September 16 08:10 AM MDT - 10k Start

Contact Information

Event Location

Cherry Creek State Park- West Entrance

Click Here to view map