- Sat 18 Apr 2026
05:00
Age 18 & over
FREE-£175
- 110 km trail running
Event overview
Run, walk or hike through stunning South Downs landscapes on the iconic Serpent Trail, choosing a challenge that fits you and enjoying a friendly, inclusive trail-running atmosphere.
Highlights
- Explore the legendary Serpent Trail through heathland, woodland and rolling hills
- Choose from multiple distances, from accessible trail runs to ultra challenges
- Take part in an event designed for runners and walkers of all abilities
- Enjoy a relaxed, supportive atmosphere with achievable cut-off times
- Experience fully marked routes that let you focus on the journey, not navigation
- Soak up a welcoming event hub with food, drink and a strong trail community vibe
- Build confidence, endurance and trail skills in a beautiful national park setting
- Finish with a genuine sense of achievement in inspiring natural surroundings
This event is part of Spring Trail Series.
Event photos
Event video
- Average fitness
- Beginner-friendly
- Event expo
- Spectators
- Superfit
- Teams
- Traders at event
Your bib
Please arrive 45 minutes before your start time in order to collect your bib. If you’d prefer to receive yours in the post, you can select this option at registration.
Kit
A helpful kit checklist is readily available.
If you don't finish
In the scenario that you cannot finish a stage, you will be offered entry into the following edition of the race at half price. You will not receive a finishers' medal or official result.
- Check points
- Cut off time
- First aid
- Food stations
- Marshals
- Navigation not required
- Single start
- Sleeping facilities
- Sweeper
- Toilets
- Water stations
- Way markers
Cut offs
Very relaxed cut-offs. It’s not about what time you get, it’s the adventure you have along the way. On average, you will have over 2 hours to complete each 10km (in-between checkpoints).
- Bag transfer
- Camping
- Toilets
Event HQ
Cowdray Farm Shop & Cafe
Easebourne
Midhurst
West Sussex
GU29 0AJ
UK
Race HQ
To find the start, simply put ‘Cowdray Farm Shop, Midhurst’ into maps and you’ll be directed to the event parking by Ultra X high viz crew.
This event has been designed to be the most accessible in the UK. All races start and finish at the same location, just outside the wonderful Cowdray Farm Shop (perfect for spectators). Furthermore, you can park your car at the start/finish village.
The South Downs
You may wish to travel to the South Downs with family or friends. Should they wish to enjoy the South Downs National Park while you race, these sights are highly recommend:

A restored and remodelled medieval castle established by Roger de Montgomery on Christmas Day in 1067.

This National Nature Reserve contains a grove of ancient trees which are among the oldest living things in Britain.

Now one of the most picturesque views in the world, the Sisters were created when ancient rivers cut valleys into the chalk.
- Camping
- Drinks
- GPS tracking
- Map
- Medal
- Physio
- Post-race meal
- Snacks
Included
- Race entry
- Fully marked course
- Medical support throughout the event
- Fully stocked aid stations on course and hot water for preparing food at the campsite
- Ground assistance and full safety support
- Opportunity to purchase event photography
- UTMB World Series Indexed race 100K
- Finisher’s medal
- Drop Bag taken to mid-way point on course
- GPS Tracker
Optional extras
- Camping - Friday and Saturday nights - book your pitch when registering
- Event photography
The Spring Trail Series 50km was such a great event. For many of us it was the first race back after a long hiatus and in true Ultra X style it did not disappoint. Fabulous course, incredible support from all the staff and volunteers but most importantly, it’s the Ultra X running community that makes it such a warm and accepting environment regardless of your background. Renee M
The Spring Trail Series 100km in April was the first time I’d entered a race organised by Ultra X and I can’t speak highly enough of the event, the route, and organisation behind it. From the moment you enter, through to the regular detailed updates and the race itself you can tell how much thought and planning has gone into it, really impressive and means that as a runner all you need to think about on the day is putting one foot in front of the other and having fun! Whenever I spoke to a member of staff or volunteer they couldn’t do enough to help, did so with a smile which created such a welcoming atmosphere that perfectly captures what trail running should be about. Ultra X have set the benchmark for how a trail race should be run! Paul D
The mini 21km trail run I did was the absolute highlight of the month, the Ultra X team did such a great job in helping us not only to prepare but to anticipate in every way in advance. The race was just perfect – great location, great transport connection, fantastic atmosphere which eventually attracted fantastic runners. Zita G
The Spring Trail Series had everything you could ever want from a trail run. From the views to the vibes, this Ultra X event, as usual, didn’t disappoint! Starting and finishing from the same point, the location was perfect, and the course sublime. Plenty of runnable trails, and a good helping of mud to keep it fun! 10/10 – would run again! James C
Sustainability
- Sustainability policy
- Age 18 & over
- Entries open
- Enter online
- Insurance available
- Pay by instalments
Entry fees
Entry fee
£0.00
Entry fee
£175.00
Other races at event
- Sat 18 Apr
- #1 of 5
11:00
Age 18 & over
FREE-£36
- 12 km trail running + 130 m ascent
- Sat 18 Apr
- #2 of 5
11:00
Age 18 & over
FREE-£57
- 25 km trail running + 572 m ascent
- Sat 18 Apr
- #3 of 5
09:00
Age 18 & over
FREE-£100
- 50 km trail running + 1088 m ascent
- Sat 18 Apr
- #4 of 5
07:00
Age 18 & over
FREE-£130
- 50 km trail running + 1362 m ascent