Walk National Three Peaks Challenge Various dates This epic challenge involves climbing the three highest peaks of England, Wales and Scotland, often within 24 hours. You'll walk a total distance of 23 miles (37km), climbing 3,064 metres up Snowdon, Ben Nevis and Scafell Pike. It's an open challenge, which means you can do it as a personal challenge or a charity challenge to raise funds for Katharine House. You can take part in the Challenge in two ways — as a self-organised group, or a professionally organised event. Self-organised events can be the cheapest way to take part, while many groups will benefit from the assistance provided by professional mountain guides. To register: Simply visit the Three Peaks Challenge website and then let us know you're taking part so we can support your fundraising. Other walking challenges Don't fancy taking on the Three Peaks? Visit the Time Outdoors website for inspiration and other suggested walks.