The Children’s Tumor Foundation NF Endurance Team gives participants the opportunity to run, bike, or swim in endurance events across the country. Get a guaranteed spot in premier and often sold-out races, participate in running or cycling events around the world, take on a new challenge with an obstacle course or triathlon…you can even “Choose Your Own Challenge” and pick any adventure you’d like to tackle to benefit CTF.
Official Partner
The Children’s Tumor Foundation is now an official charity partner of the TCS London Marathon in London, England, an elite race that is part of the World Marathon Majors. Entries for the 2025 TCS London Marathon (April 2025) are still available. Applicants can also express interest in the 2026 event. Athletes must commit to fundraising $10,000 to advance CTF’s mission to end NF, using the race to improve the lives of millions living with neurofibromatosis or schwannomatosis.
Find an event
Run with realbuzz to END NF!
We’ve partnered with realbuzz to offer more opportunities for you to run in support of CTF.
How it works:
- View the available events below.
- Click the “Register” button for your chosen race. On the realbuzz event page, find the “Run for a partner charity” box and click “Enter Now.” Pay the realbuzz deposit fee (refunded upon reaching fundraising minimum).
- Create your personal CTF fundraising page here. Set corresponding fundraising minimum (noted for each event), or aim higher!
- Reach 75% toward that race’s minimum 60 days before the event in order to register for your race at no additional charge.
Need help or have questions?
2024 Marathons
2025 Marathons
No events in your area?
Climb a mountain, cycle across the country, or run/walk in any race not on our NF Endurance team schedule -- the challenge is up to you! Sign up with the NF Endurance Team and pick the event of your choice to fundraise for the Children’s Tumor Foundation.
Sign Up to Choose Your ChallengeFind a Participant/Team
Why you should get involved
NF Heroes
Get to know NF Heroes - individuals living with NF - their stories will push you across the finish line
Earn Incentives
Earn a variety of fun prizes when you reach fundraising milestones