Boulder · United States

5K races near Boulder

73 races in 2026 next one in 2 days

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Race calendar

Upcoming 5K races near Boulder

This week 10

Run · road · 5K

38th Annual Gut Buster 5K Color Run

Granby · 57 km away

Run · road · 5K

MOUNT EVANS FREEDOM RUN 5K

Evergreen · 39 km away

Run · road · 5K

Let Freedom Run 5k - LONGMONT

Longmont · 16 km away

Run · road · 5K

Loveland Liberty 5K

Loveland · 46 km away

Run · road · 5K

July 4th Run 5K/10K/13.1

Centennial · 59 km away

+35 more 5K racesShow fewer ↓

Run · road · 5K

July 4th Freedom Run 5K/10K/13.1 DENVER/AURORA

Centennial · 59 km away

Run · road · 5K

Rendezvous Run for Independence

Winter Park · 45 km away

Run · road · 5K

Let Freedom Run 5k/10k - Louisville

Louisville · 11 km away

Run · road · 5K

July 4th Run DENVER/AURORA

Aurora · 48 km away

Run · road · 5K

Sand Creek Half Marathon, 5K & 10K

Denver · 39 km away

JUL 18

Run · road · 5K

BRR All-Comers Summer Track & Field Series #3

Boulder · 2 km away

Run · road · 5K

Denver · 35 km away

Run · road · 5K

Odell Brewing 5K

Fort Collins · 66 km away

Run · road · 5K

All-Out Dog Days

Westminster · 22 km away

Run · road · 5K

Heatwave Half Marathon - Denver

Littleton · 56 km away

Run · road · 5K

DRMABPsi 1–5K Walk, Run & Roll

Denver · 46 km away

Run · road · 5K

2026 OCA Colorado 5K Panda Run

Denver · 38 km away

Run · road · 5K

Respect Life 5K

LITTLETON · 50 km away

Run · road · 5K

WeldWerks Brewing Colorado Brewery Running Series

Greeley · 66 km away

Run · road · 5K

Summer Splash Prairie Dog Half, 10k, & 5k

Castle Rock · 74 km away

Run · road · 5K

Heritage Eagles 5K

Littleton · 53 km away

Run · road · 5K

One Is Too Many: Veteran Suicide Awareness 5k and Kids Run

Greeley · 61 km away

Run · road · 5K

27th Annual Donor Dash

Denver · 39 km away

Run · road · 5K

Floyd Hill Dash

Idaho Springs · 35 km away

Run · road · 5K

Elevation Run/Walk

Conifer · 54 km away

Run · road · 5K

The Hero's Journey 5K

Aurora · 52 km away

Run · road · 5K

Run for Coffee Lovers DENVER/AURORA

Aurora · 48 km away

Run · road · 5K

Rocky Mountain Half & 5K

Estes Park · 42 km away

AUG 12

Run · road · 5K

Rocky Mountain Half Marathon & 5K

Estes Park · 42 km away

Run · road · 5K

12th Annual Run for the Ring

Aurora · 48 km away

Run · road · 5K

Unicorn 5k (South)

Highlands Ranch · 59 km away

Run · road · 5K

2026 SKECHERS Wicked Wine Run Denver

Denver · 46 km away

Run · road · 5K

All-Out Runapalooza

Arvada · 23 km away

Run · road · 5K

Summer Sizzler- Denver

Thornton · 31 km away

Run · road · 5K

Fort Collins Running Summit

Fort Collins · 66 km away

Run · road · 5K

Western Welcome Week Pancake Stampede 5K Fun Run & Walk

Littleton · 50 km away

Run · road · 5K

Panther Prowl 5K

Lakewood · 38 km away

Run · road · 5K

Sunrise Stampede

Longmont · 26 km away

Run · road · 5K

Bagel Run 5K/10K/13.1 DENVER/AURORA August

Centennial · 59 km away

Run · trail · 5K

Westminster Trail Races

Westminster · 21 km away

Boulder · 80 km

73 races mapped View on map →

Recurring 5K races near Boulder

Races that repeat — weekly, monthly or yearly

Homecoming 5K - Colorado State University

Lafayette Music Fest -5K - 10K

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.

Spooky Sprint - Denver

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.

PRA Miner Gold Rush

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.

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.

Spooky Sprint Denver 5k/10k & Half Marathon

Castle Rock Trail Festival / liveBIG Run

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.

SKECHERS Hot Chocolate Run Denver

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

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.

Westy Half & 5k

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

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.

Apex Foundation Trick or Trot 5K & Halloween Hunt

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.

View all recurring races near Boulder →

Looking for something else near Boulder?

10K running Boulder → 58 Half Marathon running Boulder → 46 Marathon running Boulder → 7

Other races in the next 90 days

All sports & distances →

JUL 139 km away cycling

Denver Rotary Club Cycling to Serve 2026

JUL 861 km away cycling

HRCA Rocky Gulch Circuit

JUL 1867 km away cycling

FoCo Fondo p/b Fat Tire

gravel19.3 km51.5 km96.6 km

JUL 1870 km away triathlon

Parker Parks and Recreation Kids' TRY-athlon

1.2 km2.4 km8.1 km

JUL 1945 km away cycling

Winter Park Classics – Race Rendezvous

JUL 2537 km away cycling

Blue Sky Hill Climb

JUL 2540 km away cycling

2026 Colorado Park 2 Park Challenge

JUL 2961 km away cycling

HRCA Badlands Circuit

gravel8.9 km17.7 km

About 5K races in Boulder

Boulder Base Miles

Boulder hosts 128 5K races in 2026 within 80 km of the city centre — upcoming dates, recurring series, and other races nearby, all in one place.

Boulder gives runners more than 150 miles of trails, so locals rarely run the same week twice. Mesa Trail rolls from Chautauqua Park with Flatirons views, and the full out-and-back runs half-marathon distance with over 2,000 feet of vert. Mt. Sanitas climbs 1,300 feet in under a mile and a half, so the fitness has nowhere to hide. South Boulder Creek Trail and Bobolink Trail suit chill Z2 days. Boulder Track Club, Elevate Run Club, Fleet Feet Boulder, Avanti Run Club, and RISE Running keep the group calendar busy. Bolder BOULDER 10K, the 2026 Dash & Dine 5k Run Series, and Boulder Marathon give the city its anchor races.

Boulder riders get road, gravel, singletrack, and base miles right out the door. Boulder Cycling Club runs Tuesday Night Rides from Twisted Pine Brewery at 5:30 PM and Thursday Night Rides from Upslope Brewery at 5:30 PM. The long version is 2 km with 500 m of elevation. The short version is 7 km with 275 m. The climb is 5 km with 3,112 m of gain. Wednesday Morning Velo and Valmont Short Track Series keep the race legs sharp.

June through September is the cleanest block for longer runs, steady rides, and cool summer nights. Elevate Run Club has long runs every Saturday at 7 am in the summer months, and locals stack Z2, intervals, and trail days before the afternoon heat matters. Boulder Cycling Club weekly rides resume in March, so road and gravel season ramps before summer really lands. Winter stays pretty damn mild when you put it in perspective. Bike paths are regularly plowed clear, and people ride all winter on fat tire bikes with snow tires. Shady areas hold snow after sunny days, so locals watch the ice and keep moving.