By using this website you agree to our
First header image
Second header image

Castle Rock Trail Festival

6 races scheduled · Sat 5th Oct 2019 · Castle Rock
Event passed
See results and photos
About this event

Come run Castle Rock’s best trail race at the beautiful Phillip S Miller Park! The event will offer six races: a 50k ultramarathon, a marathon, a half marathon, a 10K, a 5K and a family adventure race. The event will highlight the soft surface trails that are a part of the town’s largest ever park project. The race will begin near Castle Rock’s state-of-the-art Miller Athletic Complex, a beautiful $30 million venue. The race course will showcase the trails in Phillip S Miller Park and the adjacent Ridgeline Open Space. Don’t forget to take in the impressive views of the surrounding buttes and the scenic views of Castle Rock as the trail twists and winds over the flowing race course. If you have any energy left after your race, you can climb Challenge Hill, a 200-step staircase on the hillside near the finish line.

Raceday details
Your organiser
Visit websiteExternalLink
How to enter

Tickets available until Fri Oct 04 2019

What's included:

All participants in the trail races will receive a custom technical shirt in gender specific sizing.

All finishers will get a custom made finisher medal

Music at the start/finish will create a party-like atmosphere

Professional chip timing with a disposable bib chip (Adventure run is untimed)

Professional photos taken during the event

Indulge in snacks at the post race party

Runners and walkers welcome

Gift certificate awards from RNK Running in Parker

Fully supported course with up to 11 aid stations in the 50K

Live band on the amphitheater stage

The Miller Activity Complex will be available for athletes and their friends and families for a reduced fee of $4 on race day, so that runners can shower if needed after the race or if support crews want to rest indoors.

1 / 2
12:00am Sat 5th Oct 2019

Run 50km

12:00am Sat 5th Oct 2019

Run 26.2mi

Half Marathon
12:00am Sat 5th Oct 2019

Run 13.1mi

Benefits of booking with Let's Do This

Free injury protection - Refunds until 4 days before the event.


We're #1 in customer satisfaction -

Stay up-to-date
Get email updates about this event.
Be the first to review
How was the event?

What's on your mind? Past attendees and our team will be happy to answer your questions and help you prepare.

Running Events in the United States
Running Events in the United States
Route description
Route description

The Castle Rock Trail Festival course is located entirely within the confines of Philip S Miller Park and Ridgeline Open Space in Castle Rock, CO.

Starting near the amphitheater at PS Miller Park, the course travels along the yellow and purple trails before crossing a pedestrian bridge to the Ridgeline Open Space. Here, runners will circumnavigate the perimeter of the Rigeline Trail counterclockwise before returning to the pedestrian bridge. Once back in PS Miller Park, runners will continue on the yellow trail. Half Marathon, 10K and 5K runners will finish at the start line while 50K runners will get to experience the red and green trails within PS Miller Park.

The 50K runners will run two full loops of the course while the marathon runners will run two loops of the half marathon course.

The entire course is run on entirely on dirt single and double track trails. The Ridgeline Trail 50K, Marathon, Half Marathon, 10K and the LiveBIG 5K are challenging courses with a lot of short ups and downs, twists and turns and some roots mixed in to test your ankles. There will be 11 aid stations in the 50K and marathon, six aid stations in the half marathon and two aid stations in the 10K. There is only one aid station in the 5K and it is very close to the finish line. Each aid station will provide Gatorade, water and gels. 50K and marathon runners will also find a variety of food items, including pretzels, potato chips and fruit.

Family Adventure Run Obstacle Descriptions

The family adventure run will feature up to 13 possible obstacles. Here are a list of the possibilities.

  1. P.S. Miller Challenge Hill – 200 steps to the top of the ridge. A daunting task but you’ll love the views.
  2. Bubble Trouble – Nothing more satisfying than a spare bit of bubble wrap right? Crawl to the end and see how many you can squash on the way.
  3. Walk the plank – How’s your balance? Step up and make it to the end without falling!
  4. Mom, I’m TIREd – Knees up and one foot in each circle.
  5. Basic Training – Crawl under the flags, and thank your lucky stars it’s not real basic training or those flags would be barbed wire!
  6. SeeSaw – A ‘stay on your feet’ take on a classic playground toy. Extra points if you manage all 3 without falling off.
  7. Through The Rabbit Hole – Just like Alice.
  8. The Wall – Up and over, watch your footholds.
  9. Hurdles – Over is the preferred method but under works just as good.
  10. String Maze – OK, James Bond, see if you can make it to the end without touching a string.
  11. The Ladder – Just like The Wall……Up one side and down the other.
  12. HAY there! – It’s just not October without climbing a hay stack.
  13. Inflatable Obstacle Course – Test your speed against others in your group or just try to make it to the end on your feet.
Logistics and schedule

Avoid The Rush!
Pre-race Packet Pickup and Registration
Thursday and Friday, October 3 & 4

11:00 AM to 7:00 PM

Race Day Packet Pick-up
You can also pick up your race packet on race morning before the race. Race day packet pick-up closes at the start of the last race.

Drop Bags:
We will have a 10’x10′ tent with a tarp on the ground under it at the start of the second loop of the 50K. This is located right near the start/finish line. You are more than welcome to take a bag to this location and leave it for the duration of the race.


Spectators are welcome!

How to get there

1375 W Plum Creek Pkwy, Castle Rock, CO 80109, USA

Get directionsExternalLink


The Castle Rock Trail Festival will take place at Philip S Miller Park. Philip S Miller Park is located in Castle Rock, just west of I-25 at the Plum Creek Parkway exit. Take 1-25 to exit 181, travel west 1/4 mile. The entrance to the park will be on the west side of Plum Creek Parkway. Please follow the directions of the parking crew upon arrival. The race will be staged near the amphitheater.

Overflow Parking:

We will be utilizing an overflow parking at the Douglas County Event Center once parking at PS Miller Park has filled. The Douglas County Event Center is about 1.5 miles west of PS Miller Park. There will be shuttles running between the two locations throughout the day. If you are running the 5K or family adventure run, you may find it less stressful to park at this location and take the shuttle.

There is no camping in the parking lot at PS Miller Park. If you want to camp before the race, there are two campgrounds located within ten miles of the race site. Jellystone RV Park in Larkspur and Colorado Heights Camping Resort in Monument.


If you plan to fly to Colorado to run this event, Denver International Airport is approximately 45 miles from the race location.

Ask a questionFrom what gear to use to the race course itself – Our community is here to help.
Booking related questionsDo you have a question about bookings, cancellations, or refunds?
Event passed
See results and photos

© Let's Do This 2021