Castle Rock Half Marathon

Castle Rock's small-town charm, abundant outdoors, and beautiful parks, trails and open space, make our Town a great place to run.
Our Castle Rock Half Marathon unfortunately will not be held in 2017 due to construction at Festival Park and along the race route.

Looking for 2016 Race Results?

Congratulations to our first place winner, Mario Macias from Colorado Springs, who broke the current course record by six minutes! Check out more race results.

Download Race Photos

Race information

Due to construction at Festival Park and along the course the race for 2017 has been cancelled.  We hope to see you back again in 2018!


Downtown Castle Rock - Start / finish is at Festival Park, Second and Perry streets.

Available events

  • Half Marathon
  • 5-Mile
  • Rock Challenge


Preregister for the event, or on-site registration will be available at the packet pick-up sites and on race day. On-site registration racers must pay in cash or via check. Also, giveaways are not guaranteed.


Interested in helping out? Sign up to be a volunteer!

Course information

Half Marathon

The Half Marathon is a scenic run with nominal elevation gains and losses. Most of the course stretches along the serene untouched open space of Plum Creek. 

5-Mile Race

Not up for the traditional 13.1 miles? The shorter 5-Mile race follows the best parts of the Half Marathon but cuts the distance. Midway between a 5K and 10K, you'll love this run.

Rock Challenge

Looking for a little bit of adventure? This race is for you. The Rock Challenge adds the steep ascent and descent of our iconic Town monument, the Rock, to the first half of the 5-mile distance, making it a thigh-burning wake up call. Most of this course is paved except the trek up the Rock. That is a single-track natural surface trail that increase in elevation from 6,206 to 6,486 feet in 0.64 miles - that's a 280 foot climb in just over 0.5 miles!  

Aid stations

Aid stations will be at the following locations along the race course:
  • Mile 1.5 at the turnoff for the 5-Mile and Rock Challenge
  • Mile 3 at the trail turn
  • Mile 4.5 at the trail junction
  • Mile 6 at the underpass
  • Mile 8 at the turnaround (we'll have gels and bananas here)
  • Mile 10 at the underpass
  • Mile 11.5 at the trail junction

Note: Port-o-potties will also be located along the course.

More information

All three events will be professionally timed, with prizes for top finishers and finisher medals for Half Marathon participants. Registration spaces are limited so don't wait to sign up.

Stick around for the post race expo, unique Downtown boutiques and local restaurants within a few blocks of the start / finish line. This will be a great day to spend in Castle Rock.

Schedule of events

6 a.m. - Packet pickup
7 a.m. - Half Marathon start
7:15 a.m. - 5-Mile and Rock Challenge start
9 a.m. - Awards for 5-Mile and Rock Challenge
10 a.m. - Awards for Half Marathon


More information about parking is available.