The Serpent Trail 50k Ultra Marathon

The Serpent Trail is a long distance trail through some of the most breath taking countryside in the South East.  The Serpent Trail 50k Ultra race is the southern half of the trail, starting just outside Petworth and finishing in Petersfield via a mix of paths and tracks on generally sandy trails that dry well, plus short sections of road.

There are two race starts for the 50k - 8am & 10am. Both start times are as inclusive and are more of a ‘preference of choice’ rather than fast and slow waves necessarily.

Before entering click here and make sure you read the info about the two start times.

The highest point of the 50k is within the first 3 miles of the race, with a long downhill to follow and smaller undulating hills thereafter as you run through habitats rarer than rainforest.  This race takes you on a journey through woodlands, greensand hills, lowland heath and river meanders in some of the best, quintessentially English Countryside you could find! 

The 50k is a flat route so is a great course for those looking to go fast, a great first Ultra race or a good long distance walking challenge!  

  • 50km Distance / 700m Total ascent

  • Coach Transport to race start - INCLUDED in entry fee!

  • 5 Checkpoints

  • UTMB Index qualifying race

  • Walkers welcome

  • Free TRIBE bar to collect at registration

  • Serpent Trail markings PLUS full race signage along the route

  • Camping available on Friday and Saturday night, with Kids race!

  • Food and licensed bar in venue

  • FREE Professionally shot race images for you via our Race Photos page and social media

  • The top 3 Male and Female finishers in each race will receive sought-after laser etched trophies!

  • FREE un-timed Kids race of circa 1km at 7pm on Friday evening, all welcome!

There is a small kit list which is a minimum and left up to the individual to supplement and consider the conditions and weather.  Kit List info HERE

Venue - Petersfield Rugby Club (PRFC), Hampshire, GU31 4EP

Race Start - 8am & 10am Saturday 5th July 2025.    Bus Departs PRFC @ 7am &  9am prompt

Cut Off - Midnight - giving 16 / 14 hours to finish

50k Information page HERE

Provided -  5 Checkpoints with food and drink.    Medical cover.   Fully marked route.  Changing and Shower facilities.

Included -   Coach transport to race start. Serpent Trail 50k finishers medal.  FREE professionally taken photos of the event shared on social media. FREE after event massage Team at finish line!

T-shirts - We have followed suit with many other events and are offering T shirts as an extra that you can purchase online at time of entry or by editing your entry at a later date. These organic cotton Tees are a small charge of £12. This is designed to ensure those getting a T shirt as part of the event actually want to have one and to try and cut down any wastage from the event.


Trees not tees - We have teamed up with Trees not tees so that you can now choose to pay for a tree being planted by them with a race entry, this can be instead of OR as well as an event T-shirt. Read all about it here and do some future good with an entry to the Serpent Trail!

We are proud to have Havant & East Hants MIND as our official charity. Mental health has affected everyone either directly or indirectly so we are pleased to be able to help raise awareness and funds to help them do their great work in supporting those in need through the event. There is the option to give the charity a donation at time of entry and we information about fundraising for them through sponsorship HERE.

By entering you agree to our privacy policy and terms and conditions. Minimum age is 18 years old.

Online entries only - ENTRIES CLOSE 9 PM Saturday 7th JUNE 2025 or when the event is full. 

This date is also the withdrawal deadline - you must have cancelled your place by this date as after this cut off point the amount of event infrastructure / logistics / supplies that have been paid for mean it is too late to be refunded. HOW TO CANCEL YOUR PLACE.

There are no deferral or substitution options. In the event of entry withdrawal there is a 75% refund until Saturday 10th May (8 weeks before the race), then 50% refund until Saturday 7th June (4 weeks before the race).  

After the 7th June 2025 there are no refunds for that years event. See our FAQ’s page for more information regarding cancelling your place and withdrawing from the event.