Colorado & Wyoming Mountain Bike Race Calendar

People are always complaining there’s not a comprehensive list of XC/endurance mountain bike races in Colorado and Wyoming… with so many promoters, it definitely can be hard and a lot of lists out there miss out on several big races and series (or ignore the awesomeness that is Wyoming mountain bike racing).  So here it is, the one many try to copy and rarely succeed… the one and the only comprehensive race calendar, big and small races alike, Wyoming included!  

I have began posting 2023 dates as they trickle in!  

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If you know of an event I have missed, please comment below with details/website.  This list is specifically for mountain bike events, please see my gravel calendar if the event is more that style.  Thanks!

I pulled all these dates off the official event websites and communications with race directors. Please check official websites for any changes/cancellations – I will try to note when possible, but sometimes I cannot keep up.  Also several races on this list are lottery-entry, or sell out pretty darn quickly, so always check websites for full registration details and processes.

Last updated 5/29/2023

2023 Dates

January 2023

• January 7, 2023 – Winterbike – Copper Mountain, CO (Fat Bike)
• January 21, 2023 – Leadville Winter Mountain Bike Series: Colorado Cup – Leadville, CO (Fat Bike)
• January 21, 2023 – Cottonwood Crusher – Buena Vista, CO (Fat Bike)

February 2023

• February 3, 2023 – Alley Loop Fat Bike Race – Crested Butte, CO (Fat Bike)
• February 4, 2023 – Leadville Winter Mountain Bike Series: Tennessee Pass Night Jam – Leadville, CO (Fat Bike)
• February 9-11, 2023 – Wyoming Senior Olympics – Laramie, WY (Fat Bike)
• February 12, 2023 – Snow Dawg – Laramie, WY (Fat Bike)
• February 18, 2023- Frisco Freeze – Frisco, CO (Fat Bike)

March 2023

• March 4, 2023 – Leadville Winter Mountain Bike Series: Mineral Belt Mayhem – Leadville, CO (Fat Bike)
• March 4, 2023 – Chubby Chaser – Laramie, WY (Fat Bike)
• March 10-12, 2023 – The Drift – Pinedale, WY (Fat Bike)
• March 18, 2023 – Leadville Winter Mountain Bike Series: Fatty Patty – Leadville, CO (Fat Bike)

April 2023

• April 1, 2023 – The Bear – Bear Creek Lake State Park, CO (XC)
• April 5, 2023 – Salida Enduro Series – Salida, CO (Enduro)
• April 8, 2023- Leadville Winter Mountain Bike Series: East Side Epic – Leadville, CO (Fat Bike)
• April 8, 2023 – Aspen Cycling Club Short Track Race Series – Carbondale, CO (XC)
• April 12, 2023 – Salida Enduro Series – Salida, CO (Enduro)
• April 15, 2023 – Aspen Cycling Club Short Track Race Series – El Jebel, CO (XC)
• April 19, 2023 – Salida Enduro Series – Salida, CO (Enduro)
• April 22, 2023 – Aspen Cycling Club Short Track Race Series – Glenwood Springs, CO (XC)
• April 23, 2023 – Royal Gorge Groove – Canon City, CO (XC/Endurance)
• April 26, 2023 – Salida Enduro Series – Salida, CO (Enduro)
• April 29-30, 2023 – Fangdango – Castle Rock, CO (XC)
• April 30, 2023 – Salida Enduro Series – Salida, CO (Enduro)

May 2023

• May 2, 2023 – Dirt Pile Race Series – Fort Collins, CO (Short track XC)
• May 3, 223 – Valmont Short Track Series – Boulder, CO (Short track XC)
• May 5-6, 2023 – 18 Hours of Fruita – Fruita, CO (Endurance)
• May 5-6. 2023 – Grand Junction Ride & Vibes – Grand Junction, CO 
• May 6, 2023 – Sarlacc Attack 50k – Fruita, CO (Endurance)
• May 9, 2023 – Dirt Pile Race Series – Fort Collins, CO (Short track XC)
• May 10, 2023 – Valmont Short Track Series – Boulder, CO (Short track XC)
• May 13, 2023 – Royal Gorge Six & Twelve – Canon City, CO (Endurance)
• May 13, 2023 – 12 Hours of Mesa Verde – Cortez, CO (Endurance) 
• May 16, 2023 – Dirt Pile Race Series – Fort Collins, CO (Short track XC)
• May 17, 2023 – Valmont Short Track Series – Boulder, CO (Short track XC)
• May 20, 2023 – Salida Big Friggin Loop – Salida, CO (Endurance)
• May 23, 2023 – Dirt Pile Race Series – Fort Collins, CO (Short track XC)
• May 24, 2023 – Summit Mountain Challenge: Frisco Roundup – Frisco, CO (XC)
• May 24, 2023 – Valmont Short Track Series – Boulder, CO (Short track XC)
• May 24, 2023 – Prince Creek MTB – Carbondale, CO (XC)
• May 27-28, 2023 – Gunnison Growler – Gunnison, CO (XC/Endurance)
• May 27-28, 2023 – Grand Enduro – Grand Junction, CO (Enduro)
• May 28, 2023 – Iron Horse Bicycle Classic Subaru MTB Race – Durango, CO (XC) 
• May 29, 2023 – MGXC – Elbert, CO (XC)
• May 30, 2023 – Dirt Pile Race Series – Fort Collins, CO (Short track XC)
• May 31, 2023 – Session Series – Floyd Hill, CO (Enduro)
• May 31, 2023 – Eagle Ranch Classic – Eagle, CO (XC)
• May 31, 2023 – Valmont Short Track Series – Boulder, CO (Short track XC)

June 2023

• June 3, 2023 – ERock Sunrise to Sunset – Castle Rock, CO (Endurance)
• June 5, 2023 – Fat Fish Racing Series – Casper, WY (XC)
• June 6, 2023 – Dirt Pile Race Series – Fort Collins, CO (Short track XC)
• June 7, 2023 – Mid Week Melee – Bear Creek Lake State Park, CO (XC)
• June 7, 2023 – Summit Mountain Challenge: Country Boy Contest – Frisco, CO (XC)
• June 7, 2023 – Session Series – Floyd Hill, CO (Enduro)
• June 7, 2023 – Valmont Short Track Series – Boulder, CO (Short track XC)
• June 8-11, 2023 – GoPro Mountain Games – Vail, CO (XC)
• June 14, 2023 – Daveos Dash – Vail, CO (XC)
• June 14, 2023 – Glassier Buckhorn MTB Race – Basalt, CO (XC)
• June 14, 2023 – Valmont Short Track Series – Boulder, CO (Short track XC)
• June 17, 2023 – The Hundo – Bailey, CO (Endurance)
• June 19, 2023 – Fat Fish Racing Series – Casper, WY (XC)
• June 21, 2023 – Mid Week Melee – Bear Creek Lake State Park, CO (XC)
• June 21-25, 2023 – Junior Bike Week – Crested Butte, CO
• June 21, 2023 – Summit Mountain Challenge: Soda Creek Scramble – Keystone, CO (XC)
• June 21, 2023 – Session Series – Floyd Hill, CO (Enduro)
• June 21, 2023 – Valmont Short Track Series – Boulder, CO (Short track XC)
• June 24, 2023 – Winter Park Classics: Point to Point – Winter Park, CO (XC)
• June 27, 2023 – Gem City Mountain Bike Series – Laramie, WY (XC)
• June 28, 2023 – Session Series – Floyd Hill, CO (Enduro)
• June 28, 2023 – Son of Middle Creek Enduro – Vail, CO (XC/Enduro)
• June 28, 2023 – Butterhack XC – Aspen, CO (XC)
• June 28, 2023 – Valmont Short Track Series – Boulder, CO (Short track XC)

July 2023

• July 4, 2023 – Firecracker 50 – Breckenridge, CO (Endurance)
• July 5, 2023 – Minturn Mini – Minturn, CO (Kids Only XC)
• July 8, 2023 – Telluride 100 – Telluride, CO (Endurance)
• July 8-9, 2023 – Big Mountain Enduro – Durango, CO (Enduro)
• July 9, 2023 – Silver Rush 50 – Leadville, CO (Endurance)
• July 10, 2023 – Fat Fish Racing Series – Casper, WY (XC)
• July 11, 2023 – Gem City Mountain Bike Series – Laramie, WY (XC)
• July 12, 2023 –  Highlands Ranch MTB Series – Highlands Ranch, CO (XC)
• July 12, 2023 – Sky Mountain Park Race – Aspen, CO (XC)
• July 19, 2023 – Summit Mountain Challenge: Copper Mountain Melee – Copper Mountain, CO (XC)
• July 19, 2023 – Beaver Creek Blast – Beaver Creek, CO (XC) 
• July 19, 2023 – Highlands Ranch MTB Series – Highlands Ranch, CO (XC)
• July 22, 2023 – Sunrise to Sunset Winter Park – Winter Park, CO (Endurance)
• July 22-23, 2023 – Colorado State MTB Championships – Copper Mountain, CO (XC)
• July 25, 2023 – Gem City Mountain Bike Series – Laramie, WY (XC)
• July 26, 2023 – Highlands Ranch MTB Series – Highlands Ranch, CO (XC)
• July 26, 2023 – Smuggler Hunter Creek XC – Aspen, CO (XC)
• July 28-30, 2023 – Leadville Stage Race – Leadville, CO (Endurance)
• July 29, 2023 – Laramie Range Epic – Laramie, WY (XC/Endurance) 
• July 29, 2023 – Winter Park Classics: Super Loop – Winter Park, CO (XC)
• July 31, 2023 – Fat Fish Racing Series – Casper, WY (XC)

August 2023

• August 2, 2023 – Berry Creek Blast – Edwards, CO (XC)
• August 2, 2023 – Highlands Ranch MTB Series – Highlands Ranch, CO (XC)
• August 4-5, 2023 – Trestle Gravity Series – Winter Park, CO (Downhill)
• August 5, 2023 – Pierre’s Hole – Alta, WY (Endurance)
• August 5, 2023 – New Castle Dirty Dozen MTB Race – New Castle, CO (XC)
• August 5, 2023 – Emerald Mountain Epic – Steamboat Springs, CO (Endurance)
• August 5, 2023 – Snowmass 50 – Aspen, CO (Endurance)
• August 5, 2023 – Boggy Draw Beat Down – Dolores, CO (XC/Endurance)
• August 8, 2023 – Gem City Mountain Bike Series – Laramie, WY (XC)
• August 9, 2023 – Summit Mountain Challenge: Basin Burnout – Arapahoe Basin Ski Area, CO (XC)
• August 9, 2023 – Government Trail Snowmass to Aspen – Snowmass Village, CO (XC)
• August 12, 2023 – Leadville Trail 100 – Leadville, CO (Endurance)
• August 12, 2023 – Bear Bait 8 – Casper, WY (Endurance)
• August 13-18, 2023 – Breck Epic – Breckenridge, CO (Endurance)
• August 14, 2023 – Fat Fish Racing Series – Casper, WY (XC)
• August 16, 2023 – Camp Hale Hup – Camp Hale, CO (XC)
• August 23, 2023 – Snowmass Discovery – Snowmass Village, CO (XC)
• August 26, 2023 – Lake City Alpine 50 – Lake City, CO (Endurance)
• August 26, 2023 – Winter Park Classics: Tipperary Classic – Winter Park, CO (XC)
• August 26-27, 2023 – Colorado High School MTB League  – TBD  (High School XC)
• August 30, 2023 – Summit Mountain Challenge: Peaks Time Trial – Breckenridge, CO (XC)
• August 30, 2023 – Vail Grind – Vail, CO (XC)

September 2023

• September 1-3, 2023 – Trestle Gravity Series – Winter Park, CO (Downhill)
• September 3, 2023 – Grand Traverse Mountain Bike – Aspen, CO (Endurance)
• September 6, 2023 – Snowmass Short Track – Snowmass Village, CO (XC)
• September 8-10, 2023 – Pikes Peak Apex – Colorado Springs, CO (Endurance)
• September 9-10, 2023 – Colorado High School MTB League  – TBD  (High School XC)
• September 16, 2023 – Leadville Big Friggin Loop – Leadville, CO (Endurance)
• September 17, 2023 – Firebird 50k – Eagle, CO (Endurance)
• September 17, 2023 – Bearlodge Mountain Classic – Sundance, WY (XC)
  
• September 17, 2023 – Spring Valley Scramble – Glenwood Springs, CO (XC)
• September 17, 2023 – Monarch Crest Crank – Salida, CO (Fun ride)
• September 23-24, 2023 – Colorado High School MTB League  – TBD  (High School XC)
• September 30, 2023 – Gowdy Grinder – Curt Gowdy State Park, WY (XC) 

October 2023

• October 1, 2023 – Beti Bike Bash – Lakewood, CO (Women Only XC)
• October 7-8, 2023 – Colorado High School MTB League  – TBD  (High School XC)
• October 21-22, 2023 – Colorado High School MTB League State Championships  – TBD  (High School XC)