Running Wild 2026
Sign up today!Join us on Saturday 3 July for Running Wild 2027!
Get ready for an unforgettable outdoor adventure packed with obstacles, water and plenty of mud. Set in Nuclear Races’ Wild Forest, this exciting 5km challenge is all about having fun, working together and making memories along the way.
Climb, crawl, slide and splash your way through obstacles as you take on the course. Whether you're joining in with friends, family or colleagues, Running Wild is a fantastic opportunity to get outdoors, enjoy the fresh air and challenge yourself, all while supporting wildlife conservation in Essex. There’s no need for specialist training or experience, just bring your enthusiasm, a sense of adventure and be prepared to get muddy!
Every step, splash and scramble helps support the vital work of Essex Wildlife Trust, protecting local wildlife and the habitats they call home for generations to come.
When you register, you will receive:
- A place in Running Wild 2027
- A Running Wild medal
- Free post-race hot drink
- Free onsite parking
- A post-race shower
- A digital fundraising guide
Registration is £40, and we ask you to pledge to fundraise £100 per participant.
Frequently asked questions
Where is it?
It all takes place at the Wild Forest Obstacle & Activity centre, run by Nuclear Races. The full address is Wild Forest, Parsonage Farm, Ongar Road, Brentwood, Essex CM15 0LA (not the Nuclear Bunker!)
Do I need to be really fit to take part?
No. This event is designed to challenge all abilities and levels of fitness, and the instructors will adapt the challenge to suit each group. We want you to have fun at the same time – and as long as you’re prepared to get muddy and wet, you’ll have a great time!
What should I wear?
Anything you don’t mind getting dirty! Fast drying, breathable fabrics are best and remember that cotton can get heavy and cold when wet. You’ll need a pair of lace up trainers, and best to avoid plimsols or football boots.
How much does it cost?
The registration fee is £40 (plus booking fee). As the cost of providing each participant place is higher than the entry fee, we ask all participants to help make a difference by raising at least £100 in sponsorship to support Essex Wildlife Trust's vital conservation work.
Is there an age limit?
All entrants must be over 13, with under-18s being accompanied by an adult or guardian.
Do I need to be able to swim?
Some swimming ability will help, but you do not have to be able to swim. There will be buoyancy vests available and a water safety team around the lake.
Will there be somewhere to clean up after the event?
There are hot water wash down showers at the finish. These are designed to rinse the mud off, but please don’t bring shampoo & soap – you will need to shower properly once you get home!
Can I invite my family and friends to watch?
Spectators are not allowed out on the course, however there is a spectator area at the start/end.
Is there somewhere to park?
Yes, it is onsite – and free!
Are there toilets?
Yes – for participants and spectators.
What is the best way to send in my fundraising?
We advise you set up a JustGiving page. You can set up an individual page, or a team page – we definitely encourage some healthy competition! It’s quick and easy, and your sponsorship comes direct to the charity. All information will be included in your digital fundraising pack, which will be sent to you once you have completed your registration.
Sounds awesome, where do I sign up?
Great! Just register online now.
Still have a question?
Email our fundraising team and we will do our best to answer it!