guides

🏃 2021 Races, Runs, & Rides in Douglas County

Castle Rock, Highlands Ranch, Lone Tree, Parker, and Surrounding Areas

By Kyrie Collins, Highlands Ranch-Parker-Castle Rock-Lone Tree Publisher January 13, 2021

Know about a race in Douglas County not listed here? Email kyrieandsam@macaronikid.com.

Rock Hawk Trail Races 5K/10K/Half Marathon
Sunday, April 24 at 7:00 AM
Philip S. Miller Park, Castle Rock

  • 5K Registration: Starts at $35 (price increase on March 1)
  • 10K Registration: Starts at $55 (price increase on March 1)
  • 13.1M Registration: Starts at $85 (price increase on March 1)
  • Includes a t-shirt, free high-res digital race photos, and post-race breakfast burritos

Ridgeline Rampage
Saturday, May 1, 2021
Phillip S. Miller Park, Castle Rock

  • Registration opens Saturday, April 24
  • More details coming soon

Furry Scurry
Saturday, May 1, 2021
Virtual

  • Adult Registration: $40
  • Youth Registration: $20
  • Includes a 2021 Furry Scurry event-day t-shirt and offers from sponsors and vendors

Greenland Trail Races 50K/25K/8M/4M
Saturday, May 8, 2021
Greenland Open Space, Larkspur

  • In-person registration paused until the state moves to a less restrictive COVID dial spot
  • Virtual option available for $30

HRCA Mother's Day 5K
Saturday, May 8 at 9:00 AM
Mountain Vista High School, Highlands Ranch

  • Adult Registration: Starts at $45 (price increase on April 17)
  • Youth Registration (12 & under): $35
  • Registration includes a t-shirt, a pancake breakfast, and a post-race party with an inflatable slide and obstacle course for the kids

Rylie's Run
Sunday, May 9 at 9:00 AM
Douglas County Fairgrounds, Castle Rock

  • Registration: FREE but donations are gratefully accepted
  • Proceeds and donations benefit Rylie's ARK

Castlewood Canyon Endurance Run
Saturday, May 22
Castlewood Canyon State Park, Franktown

  • Registration: $175
  • The Castlewood Canyon Endurance Run (12-Hour Ultra) consists of 3 Different Trail Loops...
    [1] Canyon Loop = 6.7 Miles (Elevation Gain = 885 Feet)
    [2] Rock Pile Loop = 5.6 Miles (Elevation Gain = 429 Feet)
    [3] Peewee Loop = 1.8 Miles (Elevation Gain = 218 Feet)
    [T] Total Loop Miles = 14.1 Miles (Total Elevation Gain = 1,532)
  • Credit cards will not be processed until April 1 in case the event is canceled

Climb4Change 5K/10K
Saturday, May 22 at 7:00 AM
Phillip S. Miller Park, Castle Rock

  • Registration: Starts at $18 (price increase on April 1 and May 1)
  • Child Registration (5 & under): FREE!
  • Registration includes a t-shirt and a medal; Fun-Run registration includes a t-shirt
  • 100% of the proceeds go to the town's Adaptive Recreation program

Elephant Rock Bicycle Ride
Sunday, June 6 at 6:00 AM
Douglas County Fairgrounds, Castle Rock

  • Registration: $30-$110
  • Family Ride (8 miles), Gravel/Road Route (28.5 miles), and 3 Road Courses (44, 60, and 100 miles)
  • Stay after the ride for the Colorado Bike Expo with exhibitors, demos, live music, food and more

Pedaling 4 Parkinson's
In-Person: Saturday, June 12 | Virtual: June 1-30
Sweetwater Park, Lone Tree

  • Fundraising Minimum: $150
  • No registration fee
  • In-person event will take place if local guidelines permit
  • Virtual event will allow cyclists around the world to support the cause
  • 100% of money raised benefits the Michael J. Fox Foundation for Parkinson's Research

HRCA Happy Hour Half K
Friday, June 18 at 6:00 PM
Civic Green Park, Highlands Ranch

  • Adult Registration: Starts at $25 (price increase on April 23)
  • Youth Registration (12 & under): Starts at $20 (price increase on April 23)
  • Registration includes a t-shirt and post-race party with a beer garden and a live performance by the 6 Million Dollar Band
  • 100% of the proceeds go to the HR Therapeutic Rec program

Cattle Crossing 5K & Family Fun Trek
Saturday, June 19 at 8:00 AM
Tallman Meadow Park, Parker

  • 5K Registration: $35 for in-person | $20 for virtual
  • Family Fun Trek Registration: $20 for a family of four | $6 per additional person
  • Registration includes a commemorative item, post-race pancakes, free digital photo downloads, and more
  • FREE Kids' Dash after the race for children 8 and under (no registration needed)

Mountain Ridge Trail 10K/Half Marathon
Saturday, June 19 at 7:00 AM
Mountain Ridge Middle School, Highlands Ranch

  • 10K Registration: $50 | Half-Marathon Registration: $80
  • Virtual race options available

HRCA Independence Day 5K
Sunday, July 4 at 8:00 AM
Highlands Ranch Town Center, Highlands Ranch

  • Adult Registration: Starts at $35 (price increase on April 23)
  • Youth Registration (12 & under): Starts at $25 (price increase on April 23)
  • Registration includes a t-shirt, pancake breakfast, and one beer from Living the Dream Brewing Company (ages 21+)

Prairie Dog Half/10K/5K
Saturday, July 17 at 6:30 AM
Castle View High School, Castle Rock

  • 5K Registration: Starts at $35 (price increase on July 1)
  • 10K Registration: Starts at $45 (price increase on July 1)
  • 13.1M Registration: Starts at $75 (price increase on July 1)

Kids' TRY-athlon (Ages 6-12)
Saturday, July 17
H2O'Brien Pool & Park, Parker

  • Registration: $25
  • More details coming soon

Cook Creek TRYathlon (Ages 5+)
Saturday, July 24 at 8:40 AM
Cook Creek Pool, Lone Tree

  • Registration: $25

HR Mountain Bike Series
Wednesdays: July 21, July 28, August 4, August 11

  • Individual Race Registration: $30 for Adults | $25 for Juniors (ages 10-18)
  • Series Race Registration: $100 for Adults | $80 for Juniors
  • July 21, July 28, and August 4 at Red Tail Park; August 11 at Rocky Heights Middle School
  • All races begin at 6:00 PM

Chase the Moon 12-Hour Endurance Run
Friday, July 23 at 7:00 PM
Mountain Vista High School, Highlands Ranch

  • Solo Ultra: Starts at $135 (price increase on March 31)
  • 3-Person Relay: Starts at $265 (price increase on March 31)
  • 5-Person Relay: Starts at $395 (price increase on March 31)
  • 12-Hour team relay (3 or 5 people) and solo ultramarathon, to be run overnight
  • Includes a t-shirt, free high-res digital race photos, and post-race breakfast burritos

HRCA Splash Mash Dash Kids Triathlon (Ages 4-12)
Saturday, August 7 at 9:00 AM
Northridge Rec Center, Highlands Ranch

  • Registration: Starts at $40 (price increase on April 23)
  • Course determined by age group: 4-6 years, 7-9 years, 10-12 years
  • Registration includes a t-shirt, finisher's medal, and donuts

Wildcat Mountain 10M/10K and Kids Trail Run
Saturday, August 28 at 8:00 AM
Rocky Heights Middle School, Lone Tree

  • 10K Registration starts at $40 (price increase on April 23)
  • 10M Registration starts at $50 (price increase on April 23)
  • Kids Race (Ages 2-12) Registration: $5
  • Registration includes a t-shirt for adults, a free pancake breakfast, and a post-race party

Labor Day Half Marathon, 5K, and 10K
Monday, September 6 at 6:30 AM
Salisbury Park, Parker

  • Registration: Starts at $35
  • Registration includes t-shirt and finishers medal
  • Virtual option available

HRCA Oktoberfest 5K
Saturday, September 18 at 9:00 AM
Highlands Ranch Town Center, Highlands Ranch

  • Adult Registration: Starts at $35 (price increase on April 23)
  • Youth Registration (12 & under): Starts at $25 (price increase on April 23)
  • Registration includes a t-shirt and post-race party with free pancakes and free beer (ages 21+)

So Long to Summer 5K
Saturday, September 18
Salisbury Park, Parker

  • More details coming soon

Battle by the Brook Adventure Race
Saturday, September 25 at 8:00 AM
YMCA Camp Shady Brook, Deckers

  • Family Race Registration (shorter course): $50
  • Competitive Race Registration: $75
  • Each team will race in a variety of endurance disciplines, including orienteering/navigation,  cross-country running/hiking, mountain biking, and paddling
  • Enjoy an amazing day that ends with a post-race cookout and live music

Relay For Life of Southeast Denver
Saturday, September 25 at 1:00 PM
O'Brien Park, Parker

  • More details coming soon

Indian Creek Fifties
October 16, 2021
Indian Creek Campground, Sedalia

  • 15M Registration: Starts at $80 (price increase on August 1)
  • 55K Registration: Starts at $110 (price increase on August 1)
  • 50M Registration: Starts at $135 (price increase on August 1)

Backcountry Wilderness Half Marathon
Saturday, November 6 at 9:00 AM
Rocky Heights Middle School, Lone Tree

  • Registration starts at $60 (price increase on April 20)
  • Registration includes a long-sleeve shirt and post-race party with free pancakes and free beer (21+)

Turkey Day 5K
Thursday, November 25
Parker Recreation Center, Parker

  • More details coming soon


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