Walkers on a path during the Snowden Sea to Summit challenge

Join Team Terry for the Snowdon Sea to Summit challenge. 

You don't need to be an expert in cycling or kayaking – just bring your adventurous spirit, and you'll conquer this 30-mile route through the stunning Snowdonia landscape.

Choose your fundraising option



  • £99 registration fee and at least £460 raised 10 weeks prior to the event.

Full payment 

  • £99 registration fee and £230 to be paid 8 weeks prior to event.
People in kayaks on a lake with mountainous Welsh landscape behind them

Why join Team Terrence Higgins Trust?


We’ll be here to support you from the moment you register until you cross that finish line.

In the lead up to your challenge we’ll provide you with:

  • A guide to help kickstart your fundraising
  • Your free Terrence Higgins Trust T-shirt
  • A member of the Terrence Higgins Trust team to support you with your training and fundraising.

Discover Adventure will provide:

  • Cycle and Mountain Leaders and Kayak Instructors
  • One night’s hotel accommodation in Caernarfon 
  • Hire bike and helmet, kayak, paddle and buoyancy aid
  • First aid qualified staff and first aid supplies
  • Snacks and water
  • Complimentary glass of fizz to celebrate the completion of your challenge!

How to register


Find out more and sign up for this event by visiting the Snowden Sea to Summit page on the Discover Adventure site.

Remember to choose Terrence Higgins Trust as your charity when prompted!

Get in touch


Any questions or want to tell us you're signing up to a trek? Contact our Fundraising team.