Register for 2026

Dirty Burro MTB Race

DIRTY BURRO XC MTB RACE

The 50k XC mountain bike race continues the rich history of mountain bike racing in Big Bear! The 2026 course details will be announced in the coming months, but plan on it taking you through stunning mountain landscapes on a challenging yet enjoyable route with flowy single and double track trails.

Special 2026 note: Junior riders (18 and under) race for FREE in the Dirty Burro MTB events! Get the next generation on the trails—no entry fee required. Just register and show up ready to ride.

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PRICE INCREASE DATES

WHAT'S INCLUDED

SCENIC ALPINE ESCAPE

With cool summer temps at 7000+ ft elevation, towering pine forests, and unreal alpine views, it's no surprise Big Bear Lake is one of California's most stunning and iconic cycling destinations. Join the ride in 2026 and see what all the hype is about.

Tour de Big bear aid stations

AID STATIONS & SUPPORT

From aid stations with DJ booths and ribs to on-course mechanics and SAG support, everything’s in place to keep you going strong from start to finish.

CHIP TIMING & AWARDS

See how you performed in detail with chip tracking and full breakdowns. Lead the pack and win cash and special awards for earning that podium spot.

RACE TEE + FINISHER MEDAL

Rep Big Bear and celebrate your achievement with our 2026 technical performance tee and finisher medal.

BIKE WASH + BIKE VALET

The perfect cool down after tackling Big Bear's roads, our bike wash and valet service helps keep your most prized possession clean and protected after the race.

BIG BEAR CYCLING EXPO

The ultimate post-race party at Bear Mountain Resort! Our free cycling expo offers a good time for everyone with 50+ vendors, live music, food trucks, drinks, the Bikes and Brews Fest, a free Kids Zone, and more.

Dirty Burro XC MTB Race Course

Routes can be subject to change due to conditions beyond our control.

Course Description

Conquer the Extraordinary

  • 33 Challenging Miles: Fast and treacherous Singletrack and Doubletrack sections.
  • Dazzling Scenery: Relish in the stunning vistas of Big Bear Lake, a legendary backdrop for mountain bike racing.
  • Expect the Unexpected: Ride beneath towering pine trees and maybe catch the fleeting glimpse of Red Deer.
  • Historic Roots: Big Bear became a mountain bike racing hub in the 80’s; hosting some of the largest amateur events in the US.

Key Features

  • The Delamar Climb: Take on the infamous 11.6% grade climb that will test your endurance and invigorate your soul.
  • Strategic Aid Stations: Recharge at Mile 10, Mile 16.5 and Mile 23, crucial checkpoints on your journey.
  • Finish Strong: Experience the exhilarating rush, as you descend swiftly to the triumphant end in Holcomb Valley.

Surfaces (distances approximate)

8.6 miles paved

27.3 miles single-track & double track

Elevation:

Gain:  3,200 ft

Loss: 2,950 ft

Seize this chance to etch your name in history and feel the rush of pure adrenaline. Prepare yourself and your gear, and get ready to tackle The Dirty Burro XC Mountain Bike Race.

No E-Bikes in the Mountain Bike Event

E-bikes are allowed in the Tour de Big Bear road events only.  E-bikes will not be allowed in the Dirty Burro Mountain Bike event due to Forest Service restrictions on use of e-bikes on single track trails.