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.

The Castle Rock Half Marathon is back for 2018!

Construction at Festival Park is complete. Now, the park is the perfect place for the race. Don't miss out on this newly revamped event.

Race information

Date: Saturday, June 23, 2018
Time: 7 a.m.

Registration information

Register Here!


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

Available events

  • Half Marathon
  • 5-Mile
  • Rock Challenge

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!  

More information

All three events will be professionally timed, with prizes for top finishers and finisher medals for Half Marathon participants. 

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.