How to Run For Charity

We are thrilled to launch an expanded charity program in 2023.

Do you want to run to make a difference? Commit to fundraising a minimum of $250 for our Official Charity Partner, First Descents, and receive your 2023 Boulderthon entry for 50% off.

*Choose your own charity spots are SOLD OUT for 2023, but we're excited to partner with our Official Charity Partner, First Descents.


1. Register for the race of your choice, choosing the Charity Option at checkout (this option is 50% off).

2. Create a Fundraising Page Here and set your goal to at least $250. 

3. We will email you a Charity Runner form to fill out to confirm your entry. Please return this within 3 days of receiving it.

Our Official Charity Partner

Who We Are

First Descents provides life-changing outdoor adventures for young adults impacted by cancer and other serious health conditions.

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Need inspiration?

You may fundraise for any charity partner you wish, but here are some of our recommendations! Are you a charity  interested in becoming a Charity Partner? Please email

Achilles International

We break down barriers to race start lines and empower the disability community to cross the finish line.

Learn more

Girls on the run

Girls on the Run reaches girls at a critical stage, strengthening their confidence at a time when society begins to tell them they can’t. Underscoring the important connection between physical and emotional health, our program addresses the whole girl when she needs it the most.

Learn more

Humane Society of Boulder Valley

It is the mission of the Humane Society of Boulder Valley to protect and enhance the lives of companion animals by promoting healthy relationships between pets and people.

Learn more

Children's Hospital Colorado Foundation

As a nonprofit hospital just for kids, donors support everything from the world-class care we provide to the groundbreaking discoveries we make. You can help us provide care for every child who needs us, regardless of a family's ability to pay.

Learn more

Leave No Trace

Using the power of science, education and stewardship, Leave No Trace is on a mission to ensure a sustainable future for the outdoors and the planet.No matter where or why you get outside, it’s yours to protect. It’s Your Nature

Learn more

Community Food Share

Community Food Share is a food bank fighting hunger in Boulder and Broomfield Counties by providing access to fresh, nutritious food through local partners and its onsite and mobile pantries.

Learn more