2025 TCS London Marathon

Join us on April 27, 2025

Register Now! Donate To This Event

This event has passed, but you can still donate or add your name to our interest list for upcoming events. Need additional assistance? Please reach out to Kat Gunsur-Smith below.

Join the Crohn’s & Colitis Foundation Team Challenge community as one of the thousands of runners making an impact with every mile. Every dollar raised will help support research, education, and support for those suffering from Crohn’s disease and ulcerative colitis — two debilitating digestive diseases.

Experience one of the six iconic World Marathon Majors events at the 2025 TCS London Marathon! This event is the pinnacle of achievement for elite athletes and everyday runners. On race day, runners from around the world will set out to reach the finish line at Buckingham Palace.

Thank you for making each mile more meaningful. See you at the finish line!

Register Now!

How it works

Start your journey as a member of Team Challenge!

Register & customize your page Your registration is the first step in your Team Challenge journey. Welcome to the team!

Set your fundraising goal Our team will be with you each step of the way, providing tips and resources to help you reach your fundraising commitment. You've got this!

Start fundraising & training Log in to your personal fundraising page and start fundraising! Use email and social media to ask friends and family to donate as you train.

Your fundraising impact

Invested over $500M in research since 1949

Funded nearly 2,500+ research projects to-date

More than 31K participants in advocacy network

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