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WINDSOR 50
ULTRA Challenge Options

Sat 18 April 2026

With 50km, 25km & 10km options – it’s the perfect opportunity to challenge yourself in spring and get in shape. Join 2,000 others for and Walk, Jog, or Run from Windsor Racecourse.

CHECK OUT THE ROUTE

DO A QUICK ‘FLY THROUGH’…

A preview of the Challenge!

THE 50 km Challenge

Windsor LOOP

18 April 2026

From Windsor the ‘figure of 8’ route follows The Thames Path with fantastic views of the riverside & surrounding countryside, passing Eton College, and old Windsor before a snacks & drink stop at Runnymede. You follow ‘The Great Walk’ towards Windsor Castle with epic views as you get close. A lunch stop back at basecamp, before the 2nd 25 km loop – with more of the Thames Path, a final rest stop at Dorney Court, then back to the Racecourse where a loud cheer & celebration await.

50 km & 320 m

  • Start: Windsor Racecourse
  • Start times: 8am – 9.30am walkers & joggers (runners will be off first at 8am)
  • Solo Challenger start time option – join up with others.
  • Finish: Windsor Racecourse
  • Finish times: Runners 4 – 6 hrs, joggers 5 – 8 hrs, walkers 8 – 12 hrs

All rest stops have – covered seating areas, toilets, medics & manned by our event teams. 

  • 12 km – snacks, hot drinks & water
  • 25 km – picnic lunch & fizzy drinks 
  • 42 km – snacks, hot drinks & water
  • 50 km – meal, hot drinks & water
  • Finish – glass of fizz, medal & t-shirt

There’s a full range of optional parking & pre or post Challenge Shuttle bus transfer services, to make it easy to join & exit – and to provide flexible options for your planning. These include: 

  • Parking at Windsor Racecourse 
  • Shuttles to and from Slough train station (good London links) before and after your challenge

See ‘Bookable Extras’ for full details

2 available 

For WALKERS looking to achieve a sub 12 hour total time for 50 km. There’s a dedicated start time to opt into on the Reg Form – and join in with 200 or so other ‘Marchers’

25 km & 175 m

  • Start: Windsor Racecourse
  • Start times: 8.30am – 10.30am
  • Finish: Windsor Racecourse
  • Finish times: Runners 2 – 3 hrs, joggers 3 – 5 hrs, walkers 4 – 6 hrs

All rest stops have – covered seating areas, toilets, medics & manned by our event teams. 

  • 12 km – snacks, hot drinks & water
  • 25 km – picnic lunch, hot drinks & water
  • Finish – glass of fizz, medal & t-shirt

There’s a full range of optional parking & pre or post Challenge Shuttle bus transfer services, to make it easy to join & exit – and to provide flexible options for your planning. These include: 

  • Parking at Windsor Racecourse 
  • Shuttles to and from Slough train station (good London links) before and after your challenge

See ‘Bookable Extras’ for full details

The 25 km Challenge

Windsor Loop

18 April 2026

The 25km loop heads along the Thames Path passing Alexandra & Home Park, with a pit stop for snacks & drinks near historic Runnymede, before heading to Windsor Great Park with magnificent views of the Castle. Then back to basecamp for the finish line celebrations.

THE 10 km Challenge

Windsor Loop

18 April 2026

Perfect if you want a more leisurely start to your season – or perhaps to bring the children along and make it an active family day out! The route heads around Eton, then crosses over the river to the Windsor area – and heads west with fantastic views of the magnificent Castle before making our way back to basecamp – where a picnic lunch awaits!

10 km & 25 m

  • Start: Windsor Racecourse
  • Start times: 10:00am start for all
  • Finish: Windsor Racecourse
  • Tea / coffee / snacks at the start. 
  • Picnic lunch, hot drinks & water at finish

There’s a full range of optional parking & pre or post Challenge Shuttle bus transfer services, to make it easy to join & exit – and to provide flexible options for your planning. These include: 

  • Parking at Windsor Racecourse 
  • Shuttles to and from Slough train station (good London links) before and after your challenge

See ‘Bookable Extras’ for full details

Are you ready to sign up ?

2025 EVENT Factsheet

All you need to know about the Challenge. Print it off or send it to your friends!

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