Running Wild 2026

Are you ready to Run Wild for wildlife? Suitable for all abilities and open to ages 13+ , this is the ultimate challenge to take on with friends, family, colleagues, teammates – or come along and meet new people!

When: From 10am, Saturday 11 July

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: £40

Fundraising pledge: £100

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

Participants will receive:

• 
  
• A place in Running Wild 2026
  
• 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.

Before you register to take part please read our:

Event terms & conditions

Frequently asked questions

On your marks… get set… MUD!

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Host or Publisher Essex Wildlife Trust