Colorado Race Calendar — Running Events
(As of Tuesday, May 19, 2026) Print Version
For event listing corrections, please contact us.
For event listing corrections, please contact us.| Date | Event | Location |
| Sat., 5/30/26 | Elk Meadow 10k Trail Race Run  Register | Buchanan Park Recreation Center Evergreen, CO |
| Sat., 5/30/26 | Elk Meadow 5k Trail Race Run Register | Buchanan Park Recreation Center Evergreen, CO |
| Sat., 6/6/26 | Basalt Half Marathon & Relay Run Register | Basalt Middle School Basalt, CO |
| Sun., 6/7/26 6:30 AM | Colorado 13er Half Marathon Run, 10K Run, 5K Run  Register | Home Depot Louisville, CO |
| Sat., 6/20/26 8:00 AM | Unicorn 5k (North) 5K Run Register | Carpenter Park Fields Thornton, CO |
| Sun., 6/21/26 7:30 AM | Father's Day Classic 10k, 5k & 1 Mile 10K Run, 5K Run, 1 Mile Run Register | Apex Recreation Center Arvada, CO |
| Sat., 6/27/26 | Alderfer 10k Trail Race - 6/27/26 Run Register | Alderfer Ranch Evergreen, CO |
| Sat., 6/27/26 | Alderfer 5k Trail Race - 6/27/26 Run Register | Alderfer Ranch Evergreen, CO |
| Sat., 6/27/26 8:00 AM | Before The Fourth 5k 5K Run, 5K Walk, 5K Fun Run/Walk Register | Clement Park Littleton, CO |
| Sun., 6/28/26 5:30 AM | Mt Blue Sky Ascent & RoundTrip (formerly Mt Evans Ascent) Ascent: 14.5 Mile Run, Round Trip: 29 Mile Run Register | Mount Blue Sky Idaho Springs, CO |
| Fri., 7/3/26 | Gut Buster 5K Color Run Run Register | Destination Granby Offices Granby, CO |
| Sat., 7/4/26 | Devil's Thumb Freedom Run 5k/15k Run Register | Devil's Thumb Ranch Tabernash, CO |
| Sat., 7/4/26 7:30 AM | FireKracker 5k Citizens 5K Run, Elite 5K Run, Kids 1 Mile Run Register | City Park Fort Collins, CO |
| Sat., 7/4/26 | Independence Day 10k Run Register | Carter Park Breckenridge, CO |
| Sat., 7/4/26 8:00 AM | Let Freedom Run 5k – Longmont 5K Run Register | Sandstone Ranch Park Longmont, CO |
| Sat., 7/4/26 7:30 AM | Let Freedom Run 5k/10k – Louisville 10K Run, 5K Run Register | Louisville Recreation Center Louisville, CO |
| Sat., 7/18/26 6:30 AM | Summer Splash Prairie Dog Half Marathon, 10k & 5k Half Marathon Run, 10K Run, 5K Run Register | Castle View High School Castle Rock, CO |
| Sat., 7/25/26 | Staunton 10 Mile Trail Race Run Register | Staunton State Park Pine, CO |
| Sat., 7/25/26 | Staunton 5k Trail Race Run Register | Staunton State Park Pine, CO |
| Sat., 8/1/26 8:00 AM | Unicorn 5k (South) 5K Run Register | Highlands Heritage Regional Park Highlands Ranch, CO |
| Sun., 8/16/26 7:00 AM | Erie Half and 5K Half Marathon Run, 5K Run Register | Reliance Park Erie, CO |
| Sat., 8/22/26 8:00 AM | Byers Peak Stampede Half Marathon Run, 5K Run Register | Fraser Rodeo Grounds Fraser, CO |
| Sun., 8/23/26 7:30 AM | Pioneer Prairie Dog Half Marathon, 10k & 5k Half Marathon Run, 10K Run, 5K Run Register | Westminster Promenade Terrace Westminster, CO |
| Sun., 8/30/26 9:30 AM | Wine Run 5k at The Winery at Holy Cross Abbey 5K Run Register | The Winery At Holy Cross Abbey Canon City, CO |
| Sat., 9/12/26 9:00 AM | The Denver 5k 5K Run Register | Sloan Lake Park Denver, CO |
| Fri., 9/25/26 6:00 AM | Red Feather Trail Jamboree 50 Mile Run, 50K Run, Half Marathon Run Register | Ben Delatour Scout Ranch Red Feather Lakes, CO |
| Sat., 9/26/26 7:00 PM | Night Nation Run – Denver Run Register | Dick's Sporting Goods Park Commerce City, CO |
| Sat., 10/3/26 7:00 AM | Colorado Springs Marathon Marathon Run, Half Marathon Run, 5K Run, Kids K Fun Run/Walk Register | Colorado Springs Pioneers Museum Colorado Springs, CO |
| Sun., 10/4/26 7:00 AM | SKECHERS Hot Chocolate Run - Denver 5K Run | Washington Park Denver, CO |
| Sun., 10/11/26 8:00 AM | Westy Half and 5k Half Marathon Run, 5K Run Register | Promenade Terrace Park Westminster, CO |
| Sat., 10/17/26 9:00 AM | The Great Trailhead Footrace 10 Mile Run, 5 Mile Run Register | Bear Creek Lake Park, Pelican Point Picnic Shelter Lakewood, CO |
| Sat., 10/31/26 8:30 AM | Narrowleaf Lake & Pumpkin Run 10 Mile Run, 7 Mile Run, 4 Mile Run, 1 Mile Run | Boyd Lake State Park Loveland, CO |
| Sat., 1/16/27 8:00 AM | Rock 'n' Roll Arizona 5K Run  Event Details  Register  Website  Results | Tempe Beach Park Tempe, AZ  Course Map |
| Sun., 1/17/27 7:00 AM | Rock 'n' Roll Arizona Half Marathon Run, 10K Run Event Details Register Website Results | Tempe Beach Park Tempe, AZ Course Map |
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