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 – and head to the Thames, the surrounding countryside, and the Great Park.
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
All rest stops have – covered seating areas, toilets, medics & manned by our event teams.
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:
See ‘Bookable Extras’ for full details
ULTRA MARCH® category for walkers aiming to do 50 km in less than 12 hours
For 2026, there’s ULTRA TRAILBLAZERZ® for faster, competitive, runners with an eye on the clock and a ‘time goal’ of sub 5 hrs (male) & 5.5 hrs (female) for 50km on this Challenge. 7.45am start.
Ultra Challenge® 50 km and 100 km events are fully ITRA-certified and officially recognised as UTMB Index races.
25 km & 175 m
All rest stops have – covered seating areas, toilets, medics & manned by our event teams.
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:
See ‘Bookable Extras’ for full details
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
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:
See ‘Bookable Extras’ for full details
