The course will be marked with red arrow signs and pink flags. You will never go more then 1/4 mile without seeing one of these markings along the course.

The Ridgeline Trail Race 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 and marathon runners will then run a full second loop of the 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. 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.

Aid Station Locations: (approximate distances given).
50K: Miles 1.5, 3, 5, 6, 9, 11.5, 12.5, 15, 16.5, 18, 20, 21, 24, 26.5 and 27.5
Marathon: Miles 1.5, 3, 5, 6, 9, 11.5, 12.5, 13, 14.5, 16, 18, 19, 22, 24.5 and 25.5
Half Marathon: Miles 1.5, 3, 5, 6, 9, 11.5 and 12.5
10K: Miles 2, 3.5, 5 and 5.75
5K: Miles 2, and 2.75

There are no aid stations in the Family Adventure Run.

There is a restroom facility located just off the Ridgeline Trail about 3.5 miles into each loop.

The finish line will be open until 4:00 PM.

We also have gathered a few videos of mountain bikers riding the trails in the Ridgeline Open Space and PS Miller Park. If you would like to see these videos, click here.

Here are links to GPX files which can be loaded onto a GPS device and followed. Right click on each link and click save to desktop: 50K, Half Marathon, 10K, 5K

Here are links to printable maps: 50K, Half Marathon, 10K, 5K

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.