Essex Wildlife Trust – On your Marks get set … MUD!

Join us in the forest for a 5K like no other as you take on obstacles, water and mud – and raise vital funds for your local wildlife.

Event details


Saturday 10 June 2023

From  10am – start times will be staggered’

A static map of Running Wild

About the event

Run Wild for wildlife!

Running Wild is back for a second year! Join us in the forest for a 5K like no other, as you take on obstacles, mud, slides, swings, and water – all while raising vital funds for your local wildlife.

When: From 10am, Saturday 10 June
Where: Wild Forest, Parsonage Farm, Ongar Road, Brentwood, Essex CM15 0LA
What: A 5K packed full of obstacles, water, climbing, sliding – and lots of mud!
Registration fee: £20 – Early Bird* offer!
Fundraising pledge: £100

Held at the award-winning Nuclear Races site, Running Wild is a 5K muddy obstacle course that everyone – whatever your fitness level – can take part in! Climb over, crawling through and jump across some crazy obstacles, before finishing in style with the famous 20-foot Deathslide into a lake!

If you’re looking for a fun and exciting challenge to take on with friends, family, colleagues or teammates, then look no further.

The early bird catches the… mud?

You can save £10 on the registration fee if you sign up now – our Early Bird offer means it’s currently only £20* to sign up.

Participants will receive:

  • A place in Running Wild 2023 – worth £45 + vat!
  • A Running Wild medal
  • Free post-race hot drink
  • Free onsite parking
  • A post-race shower
  • A digital fundraising guide

By fundraising for Essex Wildlife Trust, you will be doing something amazing for the wildlife and wild places of Essex. You will be helping us create a brighter, wilder future.

*Early bird prices available until 31 March 2023, after which the standard £30 registration fee applies.  Registration fees subject to an additional booking fee.

On your marks… get set… MUD!

“Taking part in ‘Running Wild’ was not only super fun and a great excuse to get really muddy but was a fantastic way to raise vital funds for wildlife whilst going a bit wild yourself!” – Katie, Running Wild 2022 participant

Essex Wildlife Trust
Contact email: