Running events in Colorado

There are 160 upcoming running events listed in Colorado between July 2026 and July 2027. The next race is Spirit of the West 5K Run/Walk on Sun, Jul 26, 2026. Every listing includes the date, venue, distances, and a direct registration link.

RunFinders covers Colorado through Denver–Boulder — 160 upcoming races across the state's listed metro areas, from weekend 5Ks to marathon weekends. Pick a city below for its full local calendar.

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Denver–Boulder
160 upcoming events

All 5K (150) 10K (70) Half Marathon (56) Marathon (7) Trail Run (12)

Showing the next 100 of 160 races

Sun, Jul 26, 2026 Spirit of the West 5K Run/Walk 205 Flora Way · Golden, CO · From $35 5K Road
Sat, Aug 1, 2026 12th Annual Run for the Ring Barbara Davis Center for Diabetes at the CU Anschutz Medical Campus · Aurora, CO · From $15 5K Road
Sat, Aug 1, 2026 Move with MADD Denver 5K Sloan's Lake Park, Denver, CO · From $15 5K Road
Sat, Aug 1, 2026 Unicorn 5k (South) 9651 S Quebec St · Highlands Ranch, CO · From $13 5K Road
Sun, Aug 2, 2026 Bound for Boston Marathon & Half Marathon - Denver Northfield High School · Denver, CO · From $45 5K10KHalf MarathonMarathon Road
Sat, Aug 8, 2026 RMRR August 5km and picnic 6315 S University Blvd · Centennial, CO · From $10 5K Road
Sat, Aug 8, 2026 All-Out Runapalooza 14982 W 69th Ave · Arvada, CO · From $35 5K10KHalf Marathon Road
Sat, Aug 8, 2026 Summer Sizzler- Denver Carpenter Park/Thornton Recreation Center Park · From $17 5K10K Road
Sat, Aug 8, 2026 Arapahoe Warrior 5K 2201 E Dry Creek Road · Centennial, CO · From $25 5K Road
Sat, Aug 8, 2026 Eat. Run. Adopt. 10K 375 Meadowlark Dr · Berthoud, CO · From $40 10K Road
Sun, Aug 9, 2026 Pancake Stampede 5K 6115 S Santa Fe Drive · Littleton, CO · From $20 5K Road
Sun, Aug 9, 2026 The Bullfrog Summer Surge 600 South Kipling Parkway · Lakewood, CO · From $10 5K Road
Sat, Aug 15, 2026 Bagel Run 5K/10K/13.1 DENVER/AURORA Piney Creek Hollow Park (Course Map will be emailed) · Centennial, CO · From $30 5K10KHalf Marathon Road
Sat, Aug 15, 2026 Run for PB& J 5K/10K/13.1 DENVER/AURORA Piney Creek Hollow Park (Course Map will be emailed) · Centennial, CO · From $30 5K10KHalf Marathon Road
Sat, Aug 15, 2026 Frontier Academy Community 5K 6530 W. 16th Street · Greeley, CO · From $25 5K Road
Sat, Aug 15, 2026 Sunrise Stampede Fall River Elementary School / Stephen Day Park · Longmont, CO · From $10 5K Road
Sat, Aug 15, 2026 Miles for Migraine Colorado 101 N Yosemite Street · Denver, CO · From $10 5K Road
Sun, Aug 16, 2026 Erie Half & 5k Reliance Park · Erie, CO · From $30 5KHalf Marathon Road
Sun, Aug 16, 2026 Cancer League of Colorado Race 4 Research Washington Park · Denver, CO · From $40 5K Road
Sat, Aug 22, 2026 Staunton Rocks! Marathon and Half Marathon 12102 S Elk Creek Rd · Pine, CO · From $90 5K10KHalf MarathonMarathon Road
Sat, Aug 22, 2026 2026 True Impact Ministries 5K/10K 6395 S Clarkson St · Centennial, CO · From $39 5K10K Road
Sat, Aug 22, 2026 Byers Peak Stampede Half Marathon & 5K Run 1741 Co Hwy 73 · Fraser, CO · From $45 5KHalf Marathon Road
Sat, Aug 22, 2026 Coyote Chase 5k 329 Campus Dr. · Louisville, CO · From $30 5K Road
Sat, Aug 22, 2026 Ram Run 13175 W Green Mountain Dr · Denver, CO · From $10 5K Road
Sat, Aug 22, 2026 Jog in the Bog 5k 3645 W 112th ave · Westminster, CO · From $45 5K Road
Sun, Aug 23, 2026 Pioneer Prairie Dog Half, 10k & 5k 10600 Westminster Blvd · From $25 5K10KHalf Marathon Road
Sun, Aug 23, 2026 Rebel Run 5k Great Lawn Park · Denver, CO · From $20 5K Road
Sat, Aug 29, 2026 Run for Breast Cancer 5K/10K/13.1 DENVER/AURORA Piney Creek Hollow Park (Course Map will be emailed) · Centennial, CO · From $30 5K10KHalf Marathon Road
Sat, Aug 29, 2026 Sloth Run 5K/10K/13.1 DENVER/AURORA Piney Creek Hollow Park (Course Map will be emailed) · Centennial, CO · From $30 5K10KHalf Marathon Road
Sat, Aug 29, 2026 RexRun For PAWSitivity 2026 Trail Run/Walk Arapahoe County Fairgrounds · Aurora, CO · From $20 5KTrail Run Trail
Sat, Aug 29, 2026 Historic Elizabeth Main Street 5K & Family Color Run Main Street · Elizabeth, CO · From $10 5K Road
Sat, Aug 29, 2026 Run Like the Wind 5k / 2k / Dog Jog 14863 CO Hwy 7 · Allenspark, CO · From $20 5K Road
Sun, Aug 30, 2026 Glow & Roll: Illuminate What's Possible 7306 W Bowles Ave · Littleton, CO · From $55 5K Road
Sat, Sep 5, 2026 Raising the Barr 13401 Picadilly Rd · Brighton, CO · From $55 Trail Run Trail
Sat, Sep 5, 2026 Golden Harvest Half Marathon & 5k/10k - Denver Parking Lot South of The Westin Westminster · From $17 5K10KHalf Marathon Road
Sat, Sep 5, 2026 Demon Dash 19500 W 64th Pkwy · Arvada, CO · From $25 5K Road
Mon, Sep 7, 2026 Labor Day Half Marathon Salisbury Equestrian Park · Parker, CO · From $27 5K10KHalf Marathon Road
Mon, Sep 7, 2026 FCA All-Abilities Labor Day 5K Mehaffey Park 3350 W 29th Street · Loveland, CO · From $10 5K Road
Fri, Sep 11, 2026 Flaming Foliage Relay - Idaho Springs to Buena Vista 1545 Miner Street · Idaho Springs, CO · From $623 Trail Run Trail
Sat, Sep 12, 2026 National Chocolate Day: Run for Chocolates 5K/10K/13.1 DENVER/AURORA Piney Creek Hollow Park (Course Map will be emailed) · Centennial, CO · From $30 5K10KHalf Marathon Road
Sat, Sep 12, 2026 Run for Mental Health 5K/10K/13.1 DENVER/AURORA Piney Creek Hollow Park (Course Map will be emailed) · Centennial, CO · From $30 5K10KHalf Marathon Road
Sat, Sep 12, 2026 6 Dot Dash 2233 W Shepperd Ave · Littleton, CO · From $40 5K Road
Sat, Sep 12, 2026 For The City Network 5K 1501 65th Ave · Greeley, CO · From $35 5K Road
Sat, Sep 12, 2026 The Denver 5k Utica Street & West 17th Ave · Denver, CO · From $35 5K Road
Sun, Sep 13, 2026 Mad Dash 5K 2100 Country Club Parkway · Milliken, CO · From $40 5K Road
Sun, Sep 13, 2026 RMRR September 5k/10k 9830 Riverdale Road · Thornton, CO · From $10 5K10K Road
Sun, Sep 13, 2026 Buffalo Bicycle Classic University of Colorado Boulder · From $125 Half MarathonTrail Run Trail
Sun, Sep 13, 2026 31st El Grito 5k (2026) 900 Auraria Parkway · Denver, CO · From $20 5K Road
Sun, Sep 13, 2026 Tiger Prowl 5K 9700 W 8th Ave · Denver, CO · From $20 5K Road
Sun, Sep 13, 2026 9/11 Heroes Run - Denver, Colorado Great Lawn Park · Denver, CO · From $21 5K Road
Sat, Sep 19, 2026 All-Out Fall Fest 10170 Church Ranch Way · Westminster, CO · From $35 5K10KHalf Marathon Road
Sat, Sep 19, 2026 14th Annual Superhero Event Family Fun Plex or Anytime/Anywhere Virtually · Greeley, CO · From $20 5K10K Road
Sat, Sep 19, 2026 Gummball 5K 9755 Henderson Road · Brighton, CO · From $30 5K Road
Sat, Sep 19, 2026 Miles 4 Madison 5K & 1K 8100 Piney River Ave · Littleton, CO · From $25 5K Road
Sat, Sep 19, 2026 2026 Montbello Alive! 5K 15555 E. 53rd Ave · Denver, CO · From $25 5K Road
Sat, Sep 19, 2026 Denver: Walk With Autism and Resource Fair 4601 W 46th Ave · Denver, CO · From $25 5K Road
Sun, Sep 20, 2026 Expo Park XC Runs South Moline St and East Exposition Ave. · Aurora, CO · From $22 5K Road
Sun, Sep 20, 2026 20th Annual Golden Gallop 701 24th St · Golden, CO · From $25 5K10K Road
Sun, Sep 20, 2026 Farmers 5000 9505 W. 32nd Ave · Wheat Ridge, CO · From $10 5K Road
Sat, Sep 26, 2026 Oktoberfest Run 5K/10K/13.1 DENVER/AURORA Piney Creek Hollow Park (Course Map will be emailed) · Centennial, CO · From $30 5K10KHalf Marathon Road
Sat, Sep 26, 2026 Run for Donuts 5K/10K/13.1 DENVER/AURORA Piney Creek Hollow Park (Course Map will be emailed) · Centennial, CO · From $30 5K10KHalf Marathon Road
Sat, Sep 26, 2026 Lisa Nelson’s Mustang Stampede 5K 13355 West 80th Avenue · Arvada, CO · From $25 5K Road
Sat, Sep 26, 2026 Parker Parks and Recreation So Long to Summer 5K/10K 11920 Motsenbocker Rd · Parker, CO · From $40 5K10K Road
Sat, Sep 26, 2026 Runway 5K - Run for the Angels 11001 Control Tower Road · Broomfield, CO · From $40 5K Road
Sat, Sep 26, 2026 HRCA Oktoberfest 5K 9352 Dorchester St · Littleton, CO · From $40 5K Road
Sun, Sep 27, 2026 NIGHT NATION RUN - DENVER DICK'S SPORTING GOODS PARK · Commerce City, CO · From $35 5K Road
Sun, Sep 27, 2026 Boulder Marathon Boulder Reservoir Marathon Road
Sun, Sep 27, 2026 Flyin' Lion 5K 199 E. Littleton Blvd. · From $15 5K Road
Sat, Oct 3, 2026 Big Waves Family 5K run/walk 397 W 148th Ave · Westminster, CO · From $45 5K Road
Sat, Oct 3, 2026 HRCA Wildcat Mountain Trail Races 11033 Monarch Blvd · Littleton, CO · From $10 10KTrail Run Trail
Sat, Oct 3, 2026 Spooky Sprint - Denver Chatfield State Park · Littleton, CO · From $20 5K10KHalf Marathon Road
Sat, Oct 3, 2026 I Can 5k Carpenter Park Fields · Thornton, CO 5K Road
Sat, Oct 3, 2026 Lafayette Music Fest -5K - 10K 400 W South Boulder Rd Suite · Lafayette, CO · From $40 5K10K Road
Sun, Oct 4, 2026 Evergreen Mountain Weeknight Race 5300 S Olive Rd, · Evergreen, CO · From $25 Trail Run Trail
Sun, Oct 4, 2026 RMRR October 5k/8mi 16002 E Smith Rd. · Aurora, CO · From $10 5K Road
Sat, Oct 10, 2026 Bagel Run 5K/10K/13.1 DENVER/AURORA Piney Creek Hollow Park (Course Map will be emailed) · Centennial, CO · From $30 5K10KHalf Marathon Road
Sat, Oct 10, 2026 Coffee Lovers Run 5K/10K/13.1 DENVER/AURORA Piney Creek Hollow Park (Course Map will be emailed) · Centennial, CO · From $30 5K10KHalf Marathon Road
Sat, Oct 10, 2026 Suffer Better 10th Annual Fall Trail Runs Staunton State Park · Pine, CO · From $25 5KTrail Run Trail
Sat, Oct 10, 2026 Kipling Villas 5K - 2026 9706 W Walker Pl · Littleton, CO · From $15 5K Road
Sun, Oct 11, 2026 Westy Half & 5k 10600 Westminster Blvd · From $30 5KHalf Marathon Road
Sun, Oct 11, 2026 Your Story Isn't Over 5k/10k/Kids 1-Mile 6301 S University Blvd · Littleton, CO · From $20 5K10K Road
Sat, Oct 17, 2026 Indian Creek Trail Runs 2499 Pine Creek Rd · Sedalia, CO · From $30 5KTrail Run Trail
Sat, Oct 17, 2026 Living Water 5K and Family Fun Run 4601 W. 46th Ave · Denver, CO · From $30 5K Road
Sat, Oct 17, 2026 The Great Trailhead Foot Race 5 & 10 Miler 15600 W Morrison Rd. · Lakewood, CO · From $55 Trail Run Trail
Sun, Oct 18, 2026 The Palmer Lake .5K (Yes "Point" 5) 104 CO-105 · Palmer Lake, CO · From $15 5K Road
Wed, Oct 21, 2026 DU Crimson Classic 5K Run/1.5 Mile Walk Carnegie Green, University of Denver 5K Road
Sat, Oct 24, 2026 Race to Cure Sarcoma Denver Berkeley Lake Park · Denver, CO · From $10 5K Road
Sat, Oct 24, 2026 Apex Foundation Trick or Trot 5K & Halloween Hunt Powered by REP Fitness 13150 W 72nd Avenue · Arvada, CO · From $10 5K Road
Sat, Oct 24, 2026 YMCA Creepy Crawl 5K presented by Corwin Honda Santa Fe Trailhead · Palmer Lake, CO · From $40 5K Road
Sun, Oct 25, 2026 Ghosts and Goblins 5K/10K City Park · Denver, CO · From $30 5K10K Road
Sun, Oct 25, 2026 The 14th Annual Odyssey Odyssey - 2026 101 Yosemite Street (Great Lawn Park) · Denver, CO 5K Road
Sat, Oct 31, 2026 Halloween Trick or Trot Run 5K/10K/13.1 DENVER/AURORA Piney Creek Hollow Park (Course Map will be emailed) · Centennial, CO · From $30 5K10KHalf Marathon Road
Sat, Oct 31, 2026 PB&J Fuel Run 5K/10K/13.1 DENVER/AURORA Piney Creek Hollow Park (Course Map will be emailed) · Centennial, CO · From $30 5K10KHalf Marathon Road
Sat, Oct 31, 2026 I Ain't Scared (of 5k) Colorado and 108th Ave · Thornton, CO · From $29 5K Road
Sat, Oct 31, 2026 Halloween Fun Run 5k & 1mile - Zombie Theme 320 Chicago Creek Rd · Idaho Springs, CO · From $20 5K Road
Sun, Nov 1, 2026 Feet for Justice Run 2001 Colorado Blvd · Denver, CO · From $10 5K10K Road
Sun, Nov 1, 2026 RMRR November 5k/15k Gateway Rd · Denver, CO · From $10 5K Road
Sun, Nov 1, 2026 All-Out Kooky-Spooky 19500 W 64th Pkwy · Golden, CO · From $35 5K10KHalf Marathon Road
Sat, Nov 7, 2026 Turkey Trails- Denver Chatfield State Park · Littleton, CO · From $17 5K10KHalf MarathonTrail Run Trail
Sat, Nov 7, 2026 City Park Classic (5k/10k & 1 Mile Walk of Hope for Pancreatic Cancer Research) 2001 Steele St · Denver, CO · From $16 5K10K Road

Calendar updated Sun, Jul 26, 2026. Missing a race? Add it free.