Register your interest for Big Hike 2025

If you love walking or hiking and taking in spectacular scenery, and want to help fund life-saving science, our Big Hike adventure is for you!

Choose between a 10k, half or full marathon hike at one of our stunning UK locations and help beat cancer step by step.

We’ll share details about our 2025 events very soon. Enter your details below to be the first to know when registrations open.