Mountain bike events have always been a big part of mountain biking in the Gunnison Valley. South and north, mountain biking events dot the calendar throughout the year.

Gunnison Mountain Bike Events

Gunnison Growler

Gunnison kicks off the season summer events season with some pretty hardcore races held at Hartman Rocks. Memorial Day Weekend (May 26-27, 2018) offers the Original Growler (and half Growler)This beast of a race covers nearly all the singletrack trails at Hartman Rocks. With full and half growler options (64 and 32 miles of dirt track riding, respectively), this is a serious race for hard core mountain bikers. Sign up soon or you may have to wait until 2019 to do the Growler.

CB Devo will also host the Kid’s Growler on May 26, 2018 with races for kids of all ages from Strider riders to 9+. Registration is at the picnic table at Hartman Rocks Base Area on the morning of the 26th.

Gunnison Growler, Gunnison Valley mountain bike events

Scott Junior Enduro

The first annual Scott Junior Enduro will be at Hartman Rocks Recreation Area on September 15, 2018. This inaugural one-day event will showcase some of the most talented junior rippers in the country. Thanks to CB Devo and Scott Bikes for bringing this one to the valley. We can’t wait to check it out!

Crested Butte/Mt. Crested Butte Mountain Bike Events

Crested Butte Bike Week

Crested Butte Bike Week is the world’s oldest mountain biking festival, June 20-24 in 2018. It includes everything from the oddball (Chainless World Championship) to the hardcore (Fat Tire 40 XC mountain bike race).

Chainless World Championship, Crested Butte bike Week

In 2018, CB Devo will host the third annual Junior Bike Week Festival. The event will include all kinds of fun stuff for groms including a track stand competition and a crosscountry race on the awesome Lower Loop system.

The Adaptive Sports Center will also run it’s biggest fundraiser, the 24 Hour Bridges of the Butte Townie Tour on June 23 and 24. Sign up solo or as a team, but don’t forget your costume.

2018’s Crested Butte Bike Week promises to be the best one yet. Bridges of the Butte, the Chainless Downhill, the Junior Wildflower Classic, Fat Tire 40, and Big Mountain Enduro are all converging on a family-friendly weekend of bikes in the home of mountain biking. Don’t miss it!

Chasing Epic Mountain Bike Trips

Chasing Epic mountain bike tours will lead a couple different 4-day guided mountain bike trips in Crested Butte this summer in partnership with local company Colorado Backcountry. These four day all-inclusive trips include guided mountain biking, lodging, food, and more. Planned trips for 2018 include:

  • July 19-22
  • August 9-12 Women Only
  • September 21-24

Spots are limited in these trips, so it’s best to register early to reserve your spot. Or, get a group together and set up a private trip.

Big Mountain Enduro Race

Local company Big Mountain Enduro will host their annual Crested Butte race in the Gunnison Valley during Crested Butte Bike Week, June 23-24, 2018. Racers will get to race technical, steep, fast stages on some of Crested Butte’s best backcountry singletrack trails.


Outerbike Crested Butte

Outerbike is the best bike demo event in the universe and we are so excited to officially announce that we will host Outerbike Summer in Mt. Crested Butte August 17-19, 2018. Get the full skinny over on our Outerbike event page.

The Pearl Pass Tour

Join in on the Annual Pearl Pass Tour September 8-9, 2018. Since 1976, Crested Butte riders have made the precarious trip over Pearl Pass to Aspen every September (except one). Initially proposed as a joke, the Crested Butte riders figured why not and headed across the pass. The next year all the Marin County riders showed up for the annual Pearl Pass tour and a tradition was born.

Pearl Pass, Gunnison Valley mountain bike events

Fat Bike World Championships

On January 23-27, 2019, Crested Butte will host the fourth annual Borealis Fat Bike World Championships. Come to Crested Butte for the best darn fat bike festival going. Someone has to beat Robbie Squire at some point!

Whether you’re here for the races or the spectacle, you do not want to miss the next Fat Bike World Championships.

Other stuff

We know you don’t just come here for the biking. The Gunnison Valley is home to countless music performances, a renowned juried art show, and Colorado’s oldest rodeo. Use our full events calendar to plan your bike trip to line up with some of our other events.

All Gunnison Valley Events