Are you a regular walker and new to endurance events? Perhaps a seasoned trekker looking for testing adventures? Or even a marathon runner wanting to 'up' your distance? Whether it's along magnificent coastal scenery, or in stunning open countryside, there’s an Ultra Challenge for you.

Every challenge gets full support and hospitality all the way from the challenge organisers, leaving you to focus on the challenge! You'll get rest stops with free food and drink, medics, massage and pace walkers, pre-event training support, accommodation options, plus medals and T-shirts.

First, decide which event you wish to enter from the options below. Then follow the link for your chosen challenge to be taken to the registration form on Action Challenge’s website.

Make sure you choose 'Terrence Higgins Trust' from the-drop down list in ‘other charities’ to join our team.

Once you've registered on their site, we’ll be in touch to help you get started with your training and fundraising!

If you've bought a place in the race already and would like to run for us, let us know and we'll send you a free Terrence Higgins Trust running top. There's no minimum sponsorship in this case, just raise as much as you can!

Each challenge has different distance options – find out your full range of options at the individual event links below.

Easter 50 (Saturday 12 April 2025)

The first Ultra Challenge of the season – and a good one to take on after the Easter break!

Isle of Wight (Saturday 3/Sunday 4 May)

The island is easy to get to – with good transport links, and its coastal path is the setting for an unforgettable challenge, which 2,000 or so adventurers will take on over the bank holiday weekend.

Jurassic Coast (Saturday17/Sunday 18 May)

Spectacular World Heritage coastline, and an amazing challenge with distance options for all!

London 2 Brighton (Saturday 24/Sunday 25 May)

The original Ultra Challenge – now in its 11 year, with a varied 60% off-road route, and a classic challenge!

Lake District (Saturday 7/Sunday 8 June)

Take on and enjoy some of England’s finest countryside at your pace.

Cotswold Way (Saturday 22/Sunday 23 June)

A spectacular 100km looped route from the new basecamp in Cirencester – the ‘capital’ of the Cotswolds – which takes in some fabulous scenery.

Peak District (Saturday 28/Sunday 29 June)

This challenge welcomes 2,000 adventurers into the fabulous Peak District National Park.

North Downs (Saturday 12 July)

The looped route takes in some of the North Downs Way, the Surrey Hills, and the magnificent views over the countryside to the south.

South West Coast 50 (Saturday 2 August)

From basecamp in the shadow of Dunster Castle, the route takes in the fabulous first section of the 630 mile SW Coastal Path – from Minehead to Porlock, with fantastic views out towards Wales.

Summer Walk (Saturday 24 August)

Explore the ‘gateway to London’ along the River Thames eastern section.

South Coast (Saturday 7/Sunday 8 September)

The South Downs National Park is a superb backdrop for 2,000 adventurers to take on a real challenge.

Thames Moonlight 10 Walk (Friday 13 September)

Take on a spirited 10km or an energetic 10 mile looped route through the heart of London as darkness falls, passing famous landmarks.

Thames Path (Saturday 14/Sunday 15 September)

Take on England’s greatest river with a ‘flat’ 100 km route.

Thames Bridges Trek (Saturday 14 September)

Venture across the capital, with unrivalled views of the skyline.

Chiltern 50 (Saturday 28 September)

The end of season challenge takes in some of the best of the wonderful Chilterns countryside, with historic trails, nature reserves, forests, and a few hills with fantastic views.

Halloween Walk (Saturday 26 October)

A hair-raising hike around London’s scary streets and historic haunts! Gather your bravest guys and ghouls and dress to distress.

Charity sponsorship

Pay a small registration fee, do lots of fundraising and we cover the cost of your event place!

• 10 miles: fee £10 / fundraising target £100
• 25km: fee £20 / fundraising target £240
• 50km: fee £30 / fundraising target £360
• 75km: fee £35 / fundraising target £450 
• 100km: fee £40 / fundraising target £575 

Mixed funding

Pay half of the event place cost yourself, fundraise a bit less and we pay the balance of the event place cost.

• 10 miles: fee £22.50 / fundraising target £70
• 25km: fee £50/ fundraising target £150
• 50km: fee £75 / fundraising target £225 
• 75km: fee £90 / fundraising target £270
• 100km: fee £100 / fundraising target £300 

Self funding

You pay the full cost of the event place – choose your own fundraising target!

• 10 miles: £39
• 25km: £89 
• 50km: £139 
• 75km: £169
• 100km: £198 

Not all events offer all options. See individual event pages for full details.

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 or running vest.
• A member of the Terrence Higgins Trust team to support you with your training and fundraising.
• Regular news and updates to keep you informed.

Any questions? Get in touch with our Fundraising team.

Got a question about our challenge events or fundraising for Terrence Higgins Trust? Take a look at our FAQs.