10K races near Castle Rock

The Spooky Sprint - Denver is a Halloween-themed road race held annually at Chatfield State Park in Littleton, southwest of Denver. As part of the Bodies Race Series, it offers a family-friendly setup with options for a 5K, 10K, half marathon, or an untimed 1 Mile. Younger children have their own untimed dash. The in-person races feature chip timing with live results and awards, and a virtual option allows participants to run independently while still receiving event merchandise. The race course is a road race within Chatfield State Park, with distances from a 1-mile family option to a half marathon. The expected attendance is in the hundreds, suggesting a focus on local runners, families, first-time racers, and those seeking Halloween-themed fun, rather than a large-scale urban event. Registration includes a custom bib, a designer shirt, and a finisher medal, along with complimentary participant photos and post-race treats. Children aged 10 and under can participate in the dash for free without merchandise. The 5K and 10K events provide reduced pricing for participants aged 12 and under.

The HRCA Wildcat Mountain Trail Races offer 10-mile, 10K, and kids’ run options in Littleton, Colorado. The event begins at the Douglas County East/West trailhead near Rocky Heights Middle School. The 10-mile race starts first, followed by the 10K, with the kids’ race taking place later in the morning. The course uses the East/West Trail, leading into the HRCA Backcountry Wilderness Area and its Wildcat Mountain trail system. This is a local, in-person trail event, distinct from road races. The available distances accommodate adults seeking a longer trail run and families with children participating in a shorter race.

Philip S. Miller Park and the Ridgeline Open Space in Castle Rock serve as the setting for this trail festival, challenging runners on Castle Rock's extensive ridgeline trail system. This event is an athletic gathering, combining serious trail pursuits with a strong community and family spirit. Runners will navigate the varied terrain of the ridgeline trail system, experiencing the natural contours of Philip S. Miller Park and Ridgeline Open Space. Beyond the main races, the liveBIG Family Adventure Run offers a dedicated family obstacle course for children ages 5 to 12, ensuring an engaging experience for younger participants and an inclusive atmosphere.

The Above the Clouds Ultra begins and ends on the track at Merit Academy in Woodland Park, Colorado, a mountain town known as the City Above the Clouds. This yearly trail event features a 50k and a 10k. The 50k gains 4,137 feet, and the 10k gains 1,126 feet. It is a mountain trail race, not a road ultra, featuring climbing, singletrack, forest roads, and long sections through National Forest land. The 50k route ascends Lovell Gulch to Rampart Range Road, proceeds south with clear views of Pikes Peak, and then encircles Rampart Reservoir on quick singletrack. It then links to the less-trafficked 700.A National Forest trail, moves north on quiet forest roads, and finishes by descending the latter half of the Lovell Gulch loop. Aid stations are located at Lovell Gulch, Rainbow, Dam, and Rampart Ridge. Offerings include Tailwind, Muir Energy gels, fruit, snacks, and hot items like bacon, quesadillas, and potatoes. Crews may meet 50k runners at certain aid stations, but Rampart Ridge is closed to crews, and reaching the Dam aid station requires passing a paid entry point.

Washington Park hosts the SKECHERS Hot Chocolate Run, a community event bringing a sweet occasion to the local pathways. We return for another Hot, inviting participants to embrace the spirit of this recurring gathering. Runners will navigate the park's routes, finishing with a hot chocolate reward at the finish line. This event offers a cheerful experience, combining a run with a treat and holiday cheer.

The Halloween Trick or Trot Run is a San Francisco running event with 5K, 10K, and half-marathon options, plus a 1-mile Family Fun Run. It is designed for runners seeking a holiday race over a standard road run, with post-run Halloween candy provided. Virtual 5K, 10K, and half-marathon entries are also available for those who prefer to complete the distance independently. Registration is organized into waves, and each wave closes upon reaching capacity, encouraging early sign-ups. Runners may select an Eco-Registration for the 5K, 10K, or half marathon to forgo the race shirt. The availability of short, long, family, virtual, and no-shirt choices offers greater flexibility than a single-distance Halloween fun run.

Turkey Trails Denver is an annual Thanksgiving-themed running event in Denver offering a half marathon, 10K, 5K, 1 mile, and a Kid’s Dash. It accommodates various participants: adults can select a longer timed race, families can opt for a shorter distance, and children 10 and under have their own untimed dash. The half marathon, 10K, and 5K are chip-timed with live results. The 1 mile and Kid’s Dash are untimed. Registrations include a custom bib, designer shirt, and medal. The Kid’s Dash includes a youth-sized shirt and medal. Children can also run the dash for free without swag. The 5K and 10K have youth pricing for ages 12 and under. The finish area provides free photos and treats. A virtual option allows participation remotely while still receiving event gear.

The Denver Veterans Day Run begins and ends in Denver's City Park, offering 5K and 10K run/walk choices and a virtual participation option. The Colorado Veterans Project organizes this Veterans Day event, welcoming runners, joggers, walkers, children, and dogs. The most demanding event is the 10K Rippetoe Ruck Challenge, requiring participants to carry a 25-pound ruck or backpack. The day includes more than just the races. The Rippetoe Rucksack Challenge pays tribute to Army Captain Russell Brian Rippetoe. The event raises money to support veterans, honoring their service and sacrifice. Following the run, City Park hosts a parade and festival featuring marching bands, floats, car and motorcycle clubs, military vehicles, historical reenactments, local vendors, children's activities, entertainment, and a beer garden.

Run Denver 'Mile High City' 5K/10K/13.1 is a local Denver running event offering 5K, 10K, and half marathon distances, taking place in late November. It functions more like a supported group run than a large race: each wave is limited to approximately 15 to 20 participants, both runners and walkers are accepted, and timing chips are not used. The atmosphere is intentionally relaxed. Bibs are distributed on race day, participant gifts are mailed out, and organizers can record times by bib number upon request. Waves begin in the morning and are filled sequentially, with a waitlist or virtual run offered once capacity is reached. Participants receive a shirt, medal, and entry into a virtual runner community; the virtual option also includes text-based coaching support prior to the run.

The Thanksgiving Gobble Trot Run 5K/10K/13.1 is a Denver/Aurora holiday race series offering 5K, 10K, and half marathon distances. Organized by The Best Races, it centers on a Thanksgiving morning running tradition: participants can race, jog, or walk before the day shifts to stuffing and turkey. The event welcomes families, friends, and local runners, not exclusively competitive athletes. The core idea is to enjoy the outdoors with others, complete a manageable distance, and burn calories before the Thanksgiving meal.