- Sat 18 Apr 2026
08:30
Age 14 & over
£89
- 25 km trail running + 175 m ascent
Event overview
From the Windsor Racecourse basecamp, 1,500 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 take in some wonderful surrounding countryside.
You’ll get full support all the way, and a celebration finish back at basecamp. It’s a great way to kick off the Ultra Challenge® season and start to get in shape for summer.
The Ultra Challenge Experience
This challenge is part of the UK's number one series of treks and trail runs for a wide range of ages, fitness and experience levels.
Choose your challenge and do it at your pace. The level of support enables you to go further, whilst enjoying the great outdoors, camaraderie, and the challenge. There are marquee rest stops, lots of food and drink, medical and massage teams, with a fully signed route to guide you.
A big finish-line celebration awaits with an amazing sense of achievement, and once the aches subside, you’ll feel energised, up for more of life’s real challenges – and, maybe, personal horizons redefined.
This event is part of Windsor 50 Ultra Challenge.
Event photos
Event video
- Average fitness
- Beginner-friendly
- Event village
- Families
Your challenge, your way
Whether you’re a walker and new to challenge events, an experienced trekker, a marathon enthusiast upping the distance, or a seasoned ultra runner after UTMB points – there’s an Ultra Challenge® for you! Walk, Jog, or Run at your pace, as an Individual or a Team, for a charity of your choice or just for you.
There’s a new Ultra Trailblazerz® option for ‘rapid runners’, and an Ultra March® option for ‘hasty hikers’, plus a friendly ‘Solo Challenger’ start time to join up with others. The Windsor 50 Ultra Challenge® is fun, safe, and rewarding with full support all the way, enabling you to push yourself further in wonderful historic scenery, and enjoy a great day out!
- Check points
- Circular route
- Distance markers
- First aid
- Food stations
- Marshals
- Navigation not required
- Sweeper
- Toilets
- Undulating
- Water stations
- Way markers
Overview
The 25km loop heads along the Thames Path passing Alexandra and Home Park, with a pit stop for snacks and 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.
Map
Checkpoints
- 15km – snacks, hot drinks and water
- 25km – picnic lunch
- Finish – glass of fizz, medal and t-shirt
- BBQ
- Cafe
- Camping
- Changing facilities
- Music
- Paid parking
- Rural
- Secure bag storage
- Showers
- Toilets
- Camping
- Chip timing
- Drinks
- Event app
- GPS tracking
- Map
- Medal
- Snacks
- Training plan
- T-shirt
Before
- Challenge app
- Facebook forum
- Training guides
- Fundraising support
- Training walks and runs
- Video briefings
- Travel planning
- Parking
During
- Baggage transfers
- The start line
- Timing and GPS tracking
- Rest stops
- Food and drink
- Medical support
- Camping
Along the route
- Fully signed route
- Apps, maps and GPS
- Route safety experts
- Emergency response
- Trek masters
- 24 hour control room
After
- Finish line experience
- Finish times and certificate
- Shuttles and transfers
- Hot meal
- Medical care and follow up
- Deals on future challenges
Bookable extras
- Breakfast
- Parking
- Pre challenge transfers
- Post challenge transfers
- Baggage services
We were so impressed how well organised it was. From registration to the finish line everything was amazing - the staff were so lovely and helpful - the catering was outstanding and all the facilities clean and tidy. A huge thank you to you all!!
For my first event I was amazed at how well organised it was. Particularly as I was on my own. Very well signposted. Excellent medical assistance. Very friendly crew. Fab event!
- Age 14 & over
- Entries open
- Charity entries closed
- Charity places
- Enter online
- Event merch available
- Pay by instalments
Entry fees
Entry fee
£89.00