Event details subject to change. Please confirm all information via event website.
Ugly Sweater 5K
Left Hand Brewing Company 1265 Boston Avenue, Longmont, CO, United StatesJoin us for The Ugly Sweater 5k on December 5, 2026, for a 5k event that starts and ends at this awesome taproom in Longmont. Run, walk, jog - whatever goes! Complete the course and celebrate with us and a FREE, local craft brew at the finish line. Wear your best ugly sweater and/or festive […]
Onesie Dash
Enjoy a scenic little dash in and around Red Feather Lakes, Colorado! Wear your favorite onesie (and layer it underneath if you need extra warmth!). Start at The Tavern at Red Feather Lakes and end back at The Tavern for a hot cocoa and s'mores bar and then we'll all walk into town (3 min […]
Race Of The Santas 1M
Start the winter festivities in Breckenridge by lacing up your running shoes for the RACE OF THE SANTAS! The race kicks off on Main Street directly in front of the Canteen Tap House (208 N. Main Street) and finishes in Blue River Plaza just in time for the Lighting of Breckenridge. The first 700 registrants receive a commemorative socks with registration. […]
Summit For Life
Join the Summit for Life on December 4th. In this exciting event, participants race from the base of Aspen Mountain all the way to the top! Racers will climb 3,267 vertical feet, over the course of 2.5 miles—at night! Dinner will be provided by The Little Nell at the summit.
Rock Canyon Half Marathon
It is exciting to bring you another exquisite day of racing alongside the scenic Arkansas River! This is a fast course that starts in Pueblo's City Park and takes you around the zoo just for starters. Then you drop down to the gorgeous rivertrail, where you will be encompassed with nonstop gorgeous terrain and scenery. […]
Candy Cane Course 5K
Join us for the annual Candy Cane Course 5k/12k! A fun, Christmas-themed event that is perfect for the whole family. The fun includes - Great Swag - designer shirt & custom medal Chip-timing with live results and awards Free photos Delicious Treats waiting at the finish line Plenty of fun! Grab your friends and family, […]
RMRR Wash Park 4.5M
Washington Park - Denver 701 S Franklin St, Denver, CO, United StatesEveryone – slow, fast, or in-between – can win at RMRR Trophy Series races. With our handicap scoring system, we predict YOUR finish time based on recent running results, giving you a great goal to shoot for whatever your speed. Just show up an hour before the start and we’ll get you ready for your race. It’s an […]
Rudolph Ramble 5K
Bad news...Rudolph has gone missing. Good news...Santa knows exactly who to call. The Denver running community! Lace up your running (or walking) shoes and join the Rudolph Search & Rescue Team on a festive mission to track down everyone's favorite red-nosed reindeer before Christmas morning. The cookies can wait—it's time to SAVE CHRISTMAS! NEW THIS YEAR ~We […]
Santa Catch
Start your holiday season with the joy of running! Proceeds from this race benefit the nonprofit Adopt A Family- serving thousands of local families in need this holiday season. All 5k & 10k participants will receive a Santa Catch beanie & Hot Cocoa Bar
Santa Shuffle 5K
HO HO HO! Let's kick off the holiday season with our Santa Shuffle at Fleet Feet Littleton! Join us for a family friendly Santa-themed 5K around Clement Park. New Balance is joining us with demo shoes, raffle prizes, and MORE! This year's event will feature a new 5K course, vendor village, several food trucks to […]
CMRA Sand Creek 5M
Runners will compete over a 5 mile distance. runners and Race Walkers will compete over a 5 KM distance. The course will use the crushed gravel trails and single track around and near Bluff Lake Nature Center.
Santa Claus Run
A festive Celebration with Santa, Trail Running and plenty of Cookies and Music to get you in the Holiday Spirit. This 5k and 10k Trail Race is in Louisville and with Blowup Balloons and Christmas decorations makes for a holiday extravaganza. A selfie wall with a visit from SANTA CLAUS finishes off the day. We […]
Winterfest 5K
Kick off the holiday season with a spirited run/walk at Thornton's Carpenter Park. Choose from the chip-timed 5k, or experience the festive atmosphere in a shorter distance in our untimed Fun Run/Walk.
Ugly Sweater Run
Fruita Tavern 153 N Mulberry St., Fruita, CO, United StatesWear your most festive or ugliest holiday gear and get ready for some magical winter fun! After a social 5k fun run enjoy seasonal brews, hot chocolate, music and a big ugly sweater contest benefiting Girls on the Run Western Colorado.
YMCA Jingle Jog
Get ready for the Annual Jingle Jog 5K and Kids' Reindeer Romp as we take on the fun and festive course at the Fountain Creek Regional Park! We are excited to announce that the Jingle Jog will utilize the 5K cross-country at the Fountain-Fort Carson High School.The event's growth has led us to look for […]
Ugly Sweater Fun Run
Grab your best and ugliest holiday sweater and join the Vail Recreation District for a fun-filled morning run through Vail Village on December 11th.
Jingle Bell Run
Get ready for this year’s Jingle Bell Run, the original festive race for charity brought to you by the Arthritis Foundation. Wear your favorite holiday gear, and let's jingle all the way toward a cure! Whether you're running, walking, or strolling, bring your friends, family, and coworkers along for the ride. Together, we're spreading joy […]
Candy Cane Chase
Now in it's 5th Year...we will have 2 now courses at the Creek Oath and Westminster Park is finished! We get the same families coming back year after year, Celebrating the upcoming Holiday Season. Collecting the different Mugs each year.... This years mugs will be made of Glass. and the Finisher Medal TURNS INTO A […]
Sweaty Sweater 5K
Foothills Mall 215 E. Foothills Parkway, Fort Collins, CO, United States5k Run/Walk – 9:00 am Kid’s 1-Mile – 10:00 am Calling all Ugly Sweaters… We want to see your most hideous, outrageous, bulky and unforgettable UGLY sweater running the Sweaty Sweater Race. This is an event for everyone, whether you are walking with friends, running for an award or even prancing towards the finish line […]
Santa’s Dash for Ca$h
Join 3W Races on December 18th at Sloan's Lake Park. Collect your prize envelope at the finish line for gift cards from local businesses and maybe even CA$H!
Ugly Sweater 5K
Get into the holiday spirit with the Ugly Sweater 5K! Runners and walkers, young and old, are invited to join us at Washington Park in Denver for a flat, fast 5K. Dress in a tacky sweater – the more tinsel, bows, reindeer and candy canes, the better. It’s not a fashion faux pas if you’re […]
Resolution Run 5K
Run out the old year, and welcome the new! Now in its 42nd year, the Resolution Run is a family-friendly, neighborhood streets 5K starting & finishing at the Edora Pool Ice Center. Kids, strollers, dogs & walkers welcome! Finish in under 20:26 to earn a special prize! The race is held after sunset – we’ll […]
Rescue Run
Welcome back to Norris-Penrose Events Center / Bear Creek Park! Back in the beginning... The Rescue Run Start/Finish was at Norris-Penrose Events Center - After many wonderful years at Palmer Park we are returning back to our roots! But rather than run on the streets, as we did then, we will be running on the […]
Resolute Runner 5K
The Resolute Runner 5K is the KICK OFF PARTY OF THE YEAR! It's time to be RESOLUTE, to retroactively earn your pumpkin pie and chocolate truffles, and to start the new year on the right foot, literally! The course starts at Johnny Roberts Memorial Park in Arvada, CO, and winds through the beautiful Ralston Creek […]
Hot Chocolate 5K
Warm up your taste buds because you’re invited to the very first Hot Chocolate 5k Run! Come run your personal record and enjoy some post-race treats. This race is the perfect way to end 2025! Cross the finish line to a sweet reward of rich and delicious hot chocolate.
Ralston Creek Half Marathon
Move by Morelli 6542 Fig Street, Arvada, CO, United StatesThe Ralston Creek races feature a fun winter half-marathon and 5K run conveniently located on the west side of the Denver Metro Area in Arvada, Colorado. The courses covers a scenic mix of road and bike path over rolling terrain, and an optional early start time for half-marathon runners who expect to take more than […]
Chilly Cheeks Winter Duathlon
Cherry Creek State Park 4201 S Parker Rd, Aurora, CO, United StatesThe Chilly Cheeks Duathlon Series is now a stand-alone event held in late February. The 63rd Chilly Cheeks Duathlon will be held in the traditional format of Run-Bike-Run. Both runs will be 2.5 miles in length and the bike course will be an 11 mile paved road route. As always, we will provide a marked […]
PPRR Nielson Challenge
North Monument Valley Park 1794 Culebra Ave., Colorado Springs, CO, United StatesRace Format The first time you run this event, you'll establish a base time for yourself. This base time is used to generate a handicap time. The handicap time is calculated using an algorithm developed by Bob Royse, and it's geared to favor a beginning runner and the slower runners. Click here for an explanation of the […]
That DAM Run Half Marathon
Get ready for the Best Dam Run you'll ever do! From your first step to your finish-line celebration, this race is packed with epic views, big accomplishments, and just the right amount of dam fun. Choose from a Half Marathon, 10K, or 5K as you race along Cherry Creek Dam with panoramic views of Denver and the […]
Far Out 3/4 Marathon
Chatfield State Park 11500 N. Roxborough Park Rd, Littleton, CO, United StatesWe 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.
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