Race to Stop the Clot® 2026 Fun Run

Ready, Set, Stop the Clot®!

Join the National Blood Clot Alliance for our 7th annual Race to Stop the Clot® Fun Run in recognition of World Thrombosis Day!

Walk or run a 10K, 5K, or 1 mile course of your choosing — anywhere, anytime between October 10–17. Participate on your own, with family and friends, or rally a team and help raise funds to support NBCA's lifesaving mission.

Every step — and every dollar raised — helps advance blood clot awareness, education, and support.

Choose Your Distance

Register for the 10K, 5K, or 1 Mile and receive:

Digital race bib

Digital finisher certificate

Fun challenges and opportunities to win prizes Your own personal fundraising page

Ways to connect with fellow Race to Stop the Clot® participants

Bringing the whole crew? Receive 20% off when you register 4 or more people together.

Fundraise & Earn Rewards

Every registrant receives a personal fundraising page — share yours with family and friends and see how far your impact can go!

 Raise $100 → Earn an exclusive 2026 Race to Stop the Clot® Fun Run T-shirt

 Raise $250 → Earn a Stop the Clot® stainless steel water bottle

 Donate $100+ during registration → Your race registration is complimentary! A $30 registration discount will be automatically applied at checkout.

 Refer 5 friends who register → Receive a refund of your registration fee.

Fundraising is encouraged, but never required to participate.

How It Works

1. Register. Choose your distance: 10K, 5K, or 1 Mile.

2. Rally your supporters. Your personal fundraising page will be created automatically. Personalize it, share it with friends and family, and work toward your fundraising rewards.

3. Walk or run. Complete your selected distance anytime, anywhere between October 10–17.

4. Celebrate your finish. Submit your time on the results page and download your digital finisher certificate.

Your Miles Make a Difference

All proceeds benefit the National Blood Clot Alliance (NBCA), a 501(c)(3) nonprofit dedicated to advancing the prevention, early diagnosis, and successful treatment of life-threatening blood clots, including deep vein thrombosis (DVT) and pulmonary embolism (PE).

NBCA is the only U.S. nonprofit focused exclusively on blood clot awareness and building community among people affected by blood clots or at increased risk. Your support helps us provide lifesaving education, patient resources, community outreach, advocacy, and support to people across the country.

Register. Rally your supporters. Race your way. Help us Stop the Clot®.