Sat 19 Sep 2026 Horsham, West Sussex, UK

Tough Mudder London South | 5K - Saturday

London South is the standout event of the series for good reason. 'Showstopper' obstacles, a diverse course, seriously muddy obstacles and a party atmosphere make it the ultimate mud party!

Enter now
  • Sat 19 Sep 2026
Holmbush Estate, Horsham
5K - Saturday

12:00

Age 14 & over

£75

  • 5 km multi terrain running

Event overview

This event is part of Tough Mudder London South.

Event details

  • All fitness levels
  • Event village
  • Families
  • Newcomers
  • Spectators
  • Teams
  • Traders at event

Route

  • First aid
  • Hilly
  • Marshals
  • Traffic free
  • Wave start
  • Way markers

Location

  • Bar
  • Cafe
  • Camping
  • Changing facilities
  • Free parking
  • Music
  • Park
  • Secure bag storage
  • Showers
  • Toilets

What's included

  • Camping
  • Drinks
  • Medal
  • T-shirt

Do it for charity

Looking to do this event for charity? Charity entry options are explained on the Tough Mudder London South 15K Sunday charity places for 2025 page.

Mental health

Mind

The mental health charity.

  • Running vest
  • Fundraising support
  • Fundraising materials
  • Training plan
  • Training guide
  • Dedicated contact

Sign up
£30

Fundraise
£300

Cancer

Macmillan Cancer Support

No one should have to face cancer alone.

  • Fundraising support
  • Fundraising materials
  • Dedicated contact

Sign up
£30

Fundraise
£300

Free sign up Dementia

Alzheimer's Society

United to create a world without dementia.

  • Technical t-shirt
  • Running vest
  • Fundraising support
  • Fundraising materials
  • Pro training advice
  • Training guide
  • Online training zone
  • Dedicated contact
  • Exclusive social group
Own place

Buy own place + join charity team.

Fundraise
Any amount

How to enter

  • Age 14 & over
  • Entries open
  • Charity entries closed
  • Charity places
  • Collect race pack
  • Enter online
  • Event merch available
  • Fundraising optional
  • Pay by instalments
Enter now

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4 steps to wellbeing
Sleep well

A good night's sleep is an essential foundation for a healthy lifestyle, effective training and weight control.

Train slow

Low-intensity training is easier for you, reduces the risk of injury and helps builds an efficient aerobic system.

Eat natural

Cut out sugar & junk food, reduce carbs, eat natural foods and train your body to burn fat for fuel.

Get outdoors

Fresh air, natural light and reconnecting with nature all help to improve mental and physical wellbeing.