5K races near Longmont

Rut Run 5K is a 3.1-mile fall race in Estes Park, Colorado, connected to the town's Elk Fest. This downhill, point-to-point run is organized by the Estes Park Running Club, welcoming runners, joggers, walkers, and strollers on the course. Participants take the Hiker Shuttle from the Estes Park Visitor Center to the start on Fish Hatchery Road, then proceed along the Fall River Trail toward downtown. The course passes the historic Elkhorn Lodge, follows the river, and concludes at Performance Park. Elk Fest food vendors, local restaurants, and a complimentary beer token are available at the finish, linking the event to the festival.

The Lafayette Music Fest 5K/10K is a run-or-walk race held alongside a live-music festival in Lafayette, Colorado. Participants can choose between a 5K and a 10K. Rock for the People, a 501(c)(3) nonprofit, organizes the event as part of its mission to foster a more inclusive local music community by providing free and low-cost rehearsal and recording access. Both courses utilize the Coal Creek Trail in Boulder County and are designed as out-and-back routes for simplicity. The 10K features four aid stations approximately 1 to 1.5 miles apart, offering salty and sweet snacks, water, and electrolyte drinks. The 5K includes two aid stations with drinks and a limited snack selection. Awards are presented to the top three female and male finishers in each age group, ranging from 10-20 to 70+. The finish area offers a festival atmosphere with donuts, live music performances, and opportunities to enjoy the musical aspect of the event.

PRA Miner Gold Rush is a school-year kickoff race and fall festival at Prospect Ridge Academy, featuring a 5K on campus in the morning and a 1-mile fun run afterward. The 5K corrals at 8:30 a.m. and starts at 9 a.m.; the shorter run begins at 10:30 a.m. The schedule shifted earlier due to afternoon thunderstorms impacting past events. The race day centers on the PRA community, drawing over 1,000 people to campus in a recent edition. The 5K also serves as a BOLDERBoulder qualifier, making it more than a casual school run for those aiming for a seeded start there. Following the running events, the Fall Festival takes place from 10 a.m. to 2 p.m. on the grass soccer field, offering ticket packages, family sponsorship levels, business sponsorships, and early festival access for families purchasing a sponsorship package.

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 Long View Marathon runs point to point between Fort Collins and Loveland in northern Colorado. The full marathon begins at Edora Park and concludes at Fairgrounds Park. The same finish area hosts the half marathon, which starts at Fossil Creek Park, and a 5K centered on Fairgrounds Park. The races occur in October, with staggered morning starts for the marathon, half marathon, and 5K. The route incorporates sections of the Long View and Front Range bike paths, meaning the longer races utilize a paved-path corridor instead of a closed downtown loop. Packet pickup is available at Altitude Running in Fort Collins prior to race day and at each race’s start area on race morning, subject to a strict cutoff. Marathon and half-marathon prizes feature custom works by local artist Amy Hayman, gift cards to local businesses, overall awards, and age-group prizes; the 5K offers overall and masters awards.

The Westy Half & 5k is a fall running event in Westminster, Colorado, located at 10600 Westminster Boulevard. It features two distances: a half marathon for those seeking a longer morning run, and a 5k for participants preferring a shorter race. The event is part of the Hometown Race Series, which organizes half marathons and 5k races in communities outside the primary Denver and Boulder metro regions. A notable aspect is the 5k medal policy: all 5k finishers receive a medal, a practice that remains infrequent for this race distance.

Race to Cure Sarcoma Denver is an annual event in Denver featuring a timed 5K run, an untimed 5K run, or a 1-mile walk. Virtual options are available for those unable to attend in person. Adult registration costs $35, while children ages 6 to 12 can register for $10. Registration remains open until 8:30 AM MDT on race morning. The participants include not only runners seeking a specific time but also families, children, walkers, survivors, supporters, and individuals fundraising in honor of someone affected by sarcoma. The event is part of the Sarcoma Foundation of America’s Race to Cure Sarcoma series. This series utilizes local races to fund research and increase awareness of sarcoma, a rare cancer that can develop in bone or connective tissues like muscle, fat, nerves, blood vessels, and tissue around joints. The Denver campaign has a fundraising goal of $90,000. Individual fundraisers and teams, such as Super Mario, Team Dave Hughes, Purple Cancer Beaters, The Joel Memorial League, and Dave’s Legacy, are already contributing. This broader cause benefits over 200,000 sarcoma patients and their families, making the race both a community gathering and a practical fundraiser for research.

The Apex Foundation Trick or Trot 5K & Halloween Hunt, a Halloween-time race event in Arvada, is presented by Intermountain Health. The 5K is open to runners and walkers of all ages and abilities. Registered participants receive an event giveaway item, a swag bag, and a chance at prizes. The event includes a separate 1-mile Trick or Trot Candy Hunt for children 12 and under, featuring candy stops along the course. Costumes are encouraged, with contest prizes awarded for children 12 and under, couples, groups, homemade outfits, and pets. Proceeds benefit the Apex Foundation, a 501(c)(3) nonprofit supporting Apex Park and Recreation District's community recreation programs.

I Ain't Scared (of 5k) is a Halloween-themed 5k held at Carpenter Park, located near Colorado and 108th Avenue in Thornton, Colorado. The children's race begins at 9:15 AM Mountain time, followed by the 5k at 9:30. The shorter event is a 100-yard fun run for children ages 2 to 7. This race occurs only when Halloween falls on a weekend. Costumes are encouraged, and music and Halloween snacks are provided. All participants receive a finisher medal and a T-shirt printed with glow-in-the-dark ink. The kids' fun run is free, making the event suitable for families as well as 5k runners.

The Great Candy Run is a 5K in Denver, Colorado, located at 1700 E Louisiana Ave. The event incorporates a candy theme, featuring candy, candy canes, candy corn, costumes, and activities for children. Now in its 22nd year, the run benefits families affected by a fetal syndrome. Its short distance is suitable for children, walkers, new runners, and families seeking a casual race day.

The Louisville Trail Race offers half marathon, 10K, and 5K distances on dirt trails near Louisville Community Park in Louisville, Colorado. It provides a Front Range trail running experience, allowing both experienced and newer trail runners to select a course suited to their abilities. The routes are predominantly flat and dirt, utilizing an out-and-back structure on trails surrounding the park. A challenging hill near the finish offers views of the Flatirons and Front Range mountains. This event, now in its second decade, maintains a family-friendly atmosphere with post-race activities encouraging participants to bring guests.