Walk, jog or run with UK’s #1 trek and trail Ultra Challenges and push yourself further in 2026
There are full 100km challenges – which can be continuous, or two-day options that have camping at halfway points to ensure you only walk in daylight. Or choose one of the shorter distances – walk along stunning coastlines, or run through countryside – your challenge, your way.
Choose your own Ultra Challenge take it on as a walk, jog, run, or mix it up – your challenge, your way. Scroll down to see all available challenges.
Choose between full charity sponsorship, mixed funding or the own place options. Your challenge, your way.
Take on a 50 km, 25 km, or 10 km challenge – fundraise for Barts charity, and get active after the Easter break!
From the Windsor Racecourse base camp, join 1,500 adventurers heading out on looped routes through the Great Park with fantastic views of Windsor Castle, on to Runnymede, along the Thames Path, and enjoy some wonderful countryside.
The ‘original Ultra Challenge’, your way.
Join 2,000 adventurers of all experience levels & ages and take on a classic capital to coast route. Test your grit over the Bank Holiday weekend.
A Richmond start in Old Deer Park – then the North Downs and wonderful Surrey & Sussex countryside to halfway at Turners Hill. The full 100 km route heads over the South Downs before the welcome sight of the Brighton coastline comes in to view.
The magical Cotswold Way provides a stunning setting for a testing challenge – with some fantastic views en route and tough hills in between!
The base-camp in Cirencester is the hub for a full challenge looped route through the heart of the Cotswolds, which provides a stunning setting for 2,000 adventurers to test themselves. There are rolling hills, villages, the scenic Cotswold Way, footpaths & trails, with some fabulous views en route.
A looped 50km challenge setting out from Guildford.
Taking in some of the best of the Surrey hills, the North Downs Way, and the surrounding countryside, this route has variety, wonderful scenery & fabulous views out to the south – and easily accessible from London!
Starting alongside the grandeur of Woolwich Royal Artillery Barracks – the full 50km looped route heads along the Thames Path capturing some of London’s iconic sites.
From Greenwich to the O2, Old Royal Naval College, the Cutty Sark, the Tower of London, and the Olympic Park, before returning to Woolwich via the foot tunnel.
An Eastbourne start, up Beachy Head, over the magnificent Seven Sisters, and along the famous South Downs Way National Trail with stunning views over the sea to a Brighton mid-point.
With Devil’s Dyke next a few ups & downs lie ahead, before historic Arundel comes into view after an 100km amazing journey.
A 25km trek taking in unrivalled views of the skyline from its best vantage points.
Setting out from Putney Bridge – it’s East towards the City, zig-zagging over the array of historic bridges – each with its fascinating story – and a midpoint stop in Vauxhall for some snacks & drinks. 25km later, it’s a finish line celebration in Southwark past the majestic Tower Bridge.
England’s greatest river provides a fantastic backdrop for an unforgettable challenge.
The full 100km route follows England’s greatest river, from Putney Bridge past Hampton Court to Runnymede of Magna Carta fame at 50km – passing wonderful historic scenery including Windsor, then on all way to Henley.
This 50km looped route covers some of the best of the Chilterns countryside.
You can walk, jog, or run along historic trails and over rolling hills. Starting & finishing in Henley Showground, you’ll pass through nature reserves, forests, and a few hills with great views – it’s a route with real variety, and some wonderful scenery – and it’s all easily accessible from London.
The end of season Ultra Challenge®– in the ‘Garden of England’
Set in the ‘Garden of England’ with a basecamp near Maidstone, this 50km looped route heads anticlockwise around the Kent Downs – starting on the North Downs Way to Blue Bell Hill, around picturesque Aylesford, and following the River Medway to Mote Park stopping halfway for a picnic. Along the Len Valley Walk to the majestic Leeds Castle, then the North Downs Way back to the finish line.
We appreciate every single one of our fundraisers – you make it possible for us to fund vital healthcare and research. As a valued member of the Barts Charity team you will get:
We support the Barts Health NHS Trust hospitals and Queen Mary University of London Faculty of Medicine and Dentistry. Your fundraising allows us to bring brilliant ideas, ground-breaking research and transformational healthcare to life in East London.
If walking doesn’t appeal to you take a look at our other events.
Take on the Brighton 10 Mile this June and experience one of the UK’s most iconic seaside runs. With fresh sea air, sweeping coastal views and an electric atmosphere, this is the perfect challenge for runners ready to step up from a 10km.
Join us after work for an unforgettable evening run on one of the longest days of the year.
Join us on the summer solstice for the Finsbury Park 5km or 10km, a friendly, scenic run around the wide paths of Finsbury Park.
