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Thames Path Challenge bridge sunset with walkers
The Thames Path challenge
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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.

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Ultra Challenge Series logo

How to register

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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!

Choose your event

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

Bath 50 Ultra Challenge

Centred on this elegant historic city, take on a 50 km Ultra, a testing 29 km, or a sharp 10 km challenge at your pace! From our Bath Racecourse basecamp 2000 adventurers will head out on looped routes around & through Bath – with fantastic panoramic views, past the famous Royal Crescent, along the River Avon and taking in many of the city’s sights & sounds and surrounding countryside. 

Windsor 50 Ultra Challenge 

Saturday 18 April 2026 

Take on a 50 km Ultra, a  historic 25 km, or a sharp 10 km challenge – and make it an active Easter! From our Windsor Racecourse basecamp 2000 adventurers will head out on looped routes through the Great Park with fantastic views of the Castle, on to Runnymede, along the Thames Path, and takes in some wonderful surrounding countryside. 

Isle of Wight Ultra Challenge

Saturday 2 - Sunday 3 May 2026 

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 Ultra Challenge 

16 - 17 May 2026

Spectacular World Heritage coastline. A start in Corfe Castle, the route heads down to Swanage, and along through Lulworth Cove, past Durdle Door, with ups & downs to Weymouth half way. For full 100 km challengers, it’s past Portland Bill, Chesil Beach, and on to West Bay (of TV’s Broadchurch) – before a finish line celebration in the vibrant town of Bridport. 

London 2 Brighton Ultra Challenge 

Saturday 23 - Sunday 24 May 2026

The ‘original’ Ultra Challenge! 2,000 or so adventurers will take on the Capital to Coast trails and test their grit & determination. Richmond-Upon-Thames is the start for most, and it’s over the North Downs with wonderful Surrey & Sussex countryside to halfway at Turners Hill. The full 100km route heads over the South Downs before the welcome sight of the Brighton coastline comes in to view. You’ll get full support & hospitality all the way – and with half, quarter, Sussex Marathon & Brighton 25km loop options also available – there’s a classic bank holiday weekend challenge here for everyone!

Lake District Ultra Challenge

Saturday 6 - Sunday 7 June 2026 

Take on England’s finest countryside at your pace! Challenge basecamp is in Kendal, and it’s a 100km looped route taking in a couple of tough hills, the Garburn Pass, historic Ambleside, a half way point by Lake Windermere, forests & nature reserves – with some stunning views en-route – before a huge welcome & celebration back at basecamp after a momentous journey. You’ll get full support & hospitality all the way, optional camping / hostel accommodation – and with 50km half, marathon, quarter & 10K distance options also – there’s a Lake District Challenge for everyone!

Cotswold Way Ultra Challenge

Saturday 13 - Sunday 14 June 2026 

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

Peak District Ultra Challenge

Saturday 4 - Sunday 5 July 2026  

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

North Downs 50 Ultra Challenge

Saturday 1 August 2026 

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 Ultra Challenge 

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 

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

South Coast Ultra Challenge

Saturday 5 - Sunday 6 September 2026  

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

Thames Moonlight 10 Walk 

Friday 11 September 2026

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 Ultra Challenge 

Saturday 12 - Sunday 13 September 2026

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

Thames Bridges Trek 

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

Chiltern 50 Ultra Challenge 

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 

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

Prices and fundraising options

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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.

How we'll support you

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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.

Running and challenge events FAQ’s

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