Event details subject to change. Please confirm all information via event website.
Lucky Lyons 5K/10K
Ready to start your St. Patrick’s celebrations off with the wind at your back? Grab your luckiest green running gear and join us March 9th on the beautiful paths of Lyons, Colorado! There will be 5K and 10K races for your whole clan to enjoy. Join us at the afterparty at Main Stage Brewing and […]
Canceled Beer and Donut Hole Mile
Join us for our take on the Beer Mile and/or the Donut Hole Mile to be held as part of our 4th Year Anniversary celebration on Saturday, March 7th, 2026! In the spirit of a traditional Beer Mile format, you'll have to drink one 12oz beer before running each quarter mile. Since we don't have […]
Runnin’ of the Green Lucky 7K
Feeling the luck o' the Irish? Lace-up and chase the rainbow in Denver’s favorite Irish-themed run! Join us at Washington Park for some shenanigans! Runnin' of the Green (ROTG) is a family-friendly 7K and 2 Mile race/walk celebrating Irish traditions, Saint Patrick’s Day, and Spring! The event promises to be a day filled with Irish fun, live music, awards, […]
Run Through Time Marathon
The Annual Run Through Time Marathon, Half Marathon, and 2 Mile Run will take place on Saturday, March 11, in Salida, CO. These beautiful, challenging courses are run on dirt/jeep roads and narrow, hilly single track with fantastic views of Salida and the Arkansas Valley. Elevations range from 7000-9000 feet. Foot travel only. There is […]
Lucky Brew Race
Start your St. Patrick's celebration with either a 5k, 10k or 15k on the Kyger and Poudre River Trail. All participants will receive chip timing, free finish line video footage & photos, rockin’ Lucky Brew Socks, free green beer and a great after party (recommended 18+) complete with food trucks and awards ceremony for top […]
CMRA Spring Spree 10K
The Spring Spree Race is an out-and-back 10K running and 5K race walking course that starts and finishes north of the Halfpenny Brewing Co. across E. Arapahoe Rd. The race starts on S. Forest Way, a north-south street on the west side of the Kaiser Permanente Medical Center. There is a pedestrian cross walk with […]
Sharin O’ The Green 5K
Washington Park - Fort Collins 301 Maple St, Fort Collins, CO, United StatesThis 5k has the luck of the Irish! Bring the kids and the pup for a fun event filled with craft beer, miles of smiles, and memories to last a lifetime at Odell Brewing Company in Fort Collins on March 11, 2023.
Erin Go Braugh 7.77K
Join us for the annual Erin Go Bragh 7.77k! This is THE LUCKIEST race on earth! There may not be a real pot of gold at the finish line of this happy-go-lucky fun run, but there WILL be UNLIMITED Lucky Charms, some lucky Contests, a Dance Party, and more! Woot Woot!
5K for St. Patrick’s Day
Join us for the 40th annual 5k for St. Patrick’s Day! Back again in the downtown area, it’s the flattest 5k in Colorado Springs! Wear your kilts and your super green tech shirt! Bring the shamrocks and your sneakers.
Saint Patty’s Day 5K
Wear your greenest green and get ready for a Saint Patrick’s Day themed social event benefiting local non-profit The Gift of Love. Bring the family and your 4 legged best buddies, Kids 12 and under run free. Enjoy the post run festivities including craft brews, hot chocolate and fun fitness games.
ShamROCK Stampede
ShamROCK Stampede’s mission is to elevate the celebration of St. Paddy’s Day with a family-friendly Walk/Run and Irish-themed festival to increase awareness and raise funds for organizations that help our veterans, first responders, and others break free from PTSD and mental illness. You are CHANGING LIVES when you register for the ShamROCK Stampede. Whether you […]
Lucky Leprechaun 5K
Join us for our Lucky Leprechaun 5K Fun Run taking place on St Patrick’s Day at Twisted Pine Brewing Company - 3201 Walnut St Suite A, Boulder, CO 80301. The Lucky Leprechaun Fun Run celebrates the origins of Saint Patrick's Day, or the Feast of Saint Patrick, which is a cultural and religious celebration held […]
Krueger Family Shamrock Shuffle
The annual Vail Recreation District Krueger Family Shamrock Shuffle short and long races and the kids' fun run will celebrate all things green in the spirit of St. Patrick’s Day! Taking place on the Vail Nordic Center trails, the event includes two race categories - snowshoes and running (with or without traction devices). The race […]
COPS 90 Minute Race
Colorado State Patrol Track 2054 Quaker Street, Golden, CO, United StatesThe Colorado Outdoor Pace Series ("C.O.P.S.") is a unique set of races presented by Golden Mountain Runners and Golden Endurance. Race Dates January 7, 2026 - 5K January 21, 2026 - 45 Minute Timed Race February 4, 2026 - 10K February 18, 2026 - 60 Minute Timed Race March 4, 2026 - 15K March 18, […]
Canyonlands Half Marathon
The first Canyonlands Half Marathon was run on May 1, 1976 had just 22 finishers, including a dog. Today, thousands of runners come together in March to enjoy the scenic red rock formations and winding Colorado River that Moab has come to be known for! Running parallel to Arches National Park and the Mighty Colorado, runners […]
Kingfisher Half Marathon
We host one race per month from November to March. All races are at Chatfield State Park and start at 9:00 am on Saturday mornings. Check-in starts at 8:15 am.
All-Out Spring Fever
From the base of Table Mountain and Colorado's spectacular foothills, All-Out Multicourse presents our 11th annual Spring Fever from Jefferson County's NAAC Stadium… easily accessible from several nearby highways. Along with its Endless Series sidekick in October… Kooky-Spooky, these 5K, 10K & Half Marathon courses will hug the shores of Arvada's Blunn Reservoir via the Ralston Creek Trail […]
Central Park 5K
Is it spring or still winter? We'll know when we run the Central Park 5k at the end of March! Celebrate the end of winter with us on this flat and fast course in the historic Central Park neighborhood!
Behind the Rocks Ultra
Behind the Rocks Ultra starts and finishes at the Behind the Rocks Trail, along the border of the Behind the Rocks Wilderness Study Area. Moab's last hidden gem; its tall standing Navajo Sandstone domes and fins can be seen from many places along the course. This course traverses some remote trails, and give you the […]
Polar Plunge 5K
Are you ready for the COOLEST event of the season! Whether you're a daring plunger, a speedy 5K runner/walker, or a thrill-seeker ready to do BOTH, the Polar Plunge & 5K promises non-stop excitement and heart-pumping fun - all while supporting Special Olympics Colorado. Take the plunge into a chilly pool, dash through the 5K, or double […]
City Park Circuit
Denver Athletics brings you the Denver Park Circuit Series- Three races at Denver's iconic city parks with the same format: One Lap As Fast As You Can Go! Spring- The City Park Circuit Summer- The Cheesman Park Circuit Fall- The Wash Park Circuit Become a Denver Athletics Road Racing Member ($100) or Full Member ($175) and get free entry […]
All Hands on Deck Pirates 5K
This fun packed 5k is Presented by Give It Forward. Bring your entire family. It's All about community. Every child deserves a great start to the school year—but not every family can afford the supplies to make that possible. That’s where Give It Forward steps in. Our annual School Supply Drive brings the community together […]
Cryogenic Cannibal Chase
Planning on some degenerate behavior at Frozen Dead Guy Days? Start your morning off right with an 8k ripper around Lake Estes. This race is the morning pre game for FDGD where you'll score a sick beanie and a hearty breakfast bagel from Village Bagels before the festival kicks off.
Equinox Half Marathon
Both races start & finish at Sparge Brewing in Wellington 3999 GW Bush Unit 101, Wellington, CO 80549
Tortoise & Hare 12K
Cottonwood Glen Park 3074 S Overland Trail, Fort Collins, CO, United StatesThe Tortoise & Hare (T&H) is a low-key “handicap” series of seven races that are run monthly from October to April, typically on the first or second Sunday of the month. Computer-predicted times allow runners of all levels to compete equally. Runners start at staggered intervals with faster runners (Hares) trying to catch slower runners […]
Cayson Pearson Memorial 5K
This annual fun run/walk (& knockout tournament if you also love basketball) is held each year to honor the memory of Cayson Pearson, award scholarships, raise funds for additional and future scholarships, and raise awareness for mental health & suicide prevention.
Running Up for Air
The Up For Air Series is a collection of endurance events created to support improved air quality, while having fun hiking and running on great trails with good people. Proceeds from Up For Area events are donated to non-profit groups; the event directors receive no payment. Salt Lake City resident Jared Campbell started Running Up […]
Easter Bunny Hop
This family-friendly 5K is designed for runners, walkers, families, and anyone who loves welcoming spring in a fun and festive way. Whether you’re chasing a personal best or strolling the course with friends, the Erie Easter Bunny Hop is the perfect way to get outside and celebrate the season. 🌷 What to Expect: Professionally timed […]
Desert RATS Trail Running Festival
Desert Rats Trail Running Festival by UTMB has four unique distances, three days of racing and indescribable views of the desert. There is something for every runner. Enjoy views of the Colorado River as you race through flowy singletrack, climb up the mesa, and take in the vastness of the desert.
Run the Ranch Trail Runs
For the 5th year running and benefiting the Heart J organization, we are bringing back an amazing and beautiful trail race to Loveland, CO. You will have 6 distances to choose from. Come run on beautiful trails on private land at Sylvan Dale Guest Ranch. The views alone are to die for! There are different […]
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