A HIGH SCHOOL MOUNTAIN BIKE TEAM FUNDRAISER

The Diamond Grinder

The Humboldt Diamond Grinder was originally developed as a gravel-only ride by Revolution Bicycles in cooperation with Green Diamond Resource Company (GDRC); the Diamond in Diamond Grinder! Now in cooperation with GDRC and the City of Blue Lake, the Humboldt Diamond Grinder has evolved into a multi-course ride with epic routes. It is now a fundraising event for the Humboldt Composite High School Mountain Bike Team (HCMTB) and Redwood Coast Mountain Bike Association (RCMBA), two volunteer-only local nonprofits working to improve the local cycling experience. Check out the links below for more information on these awesome groups! 

Cost and What You Get

This is a low key, fun, grassroots event and the price reflects this. We are asking $40 to cover post race meal, and usage permits. We will have a donation option for cash and Venmo if you would like to donate and support the travel expenses of the High School Mountain Bike Team and the Blue Lake Bike Park.

Race Day Schedule

  • Race packet pickup at the venue
    • Diamon Grinder (short course) 8:00 – 9:30 am
    • Lone Star and Showers pass (long courses): 6:30 am
  • Start times
    • Lone Star and Showers Pass (long courses): 7:00 am
    • Diamond Grinder (short course): 10:00 am
  • Lunch: 12:00 pm

Sherpa Sauce and Fairhaven Coffee

We will incentivize donatios with…..Sherpa Sauce and Fairhaven Coffee!

Awards

We will have awards for the top three finishers in all categories.

  • Categories
    • Youth: 0 -16
    • Adult: 17 – 50
    • Masters: 50+

Redwood Coast Mountain Bike Association

RCMBA builds trails that build community! We are a group of volunteers dedicated to building, maintaining, and advocating for sustainable mountain bike trails and bike parks in the Northern California region. It is our goal to promote opportunities that contribute to an active and healthy community.

For six generations, our family-owned company has owned and managed one of our greatest natural resources: forests. Our long-term commitment to the sustainability of this critical natural resource and ecosystem permeates everything we do as a business.

Revolution Bikes

When you support local businesses, local businesses can, in turn, support our community. Revolution Bicycles advocates for and supports cycling infrastructure in Humboldt County. We literally dig in and get our hands dirty..

Blue Lake is a city in Humboldt County, California. Blue Lake is located on the Mad River in a deep valley, 16 miles northeast of Eureka, at an elevation of 131 feet.

Humboldt Composite Mountain Bike Club

Started in 2017. We build strong body, mind, character through the inclusive sport of interscholastic cycling