![Participants take on the 12 foot high 'Hero Walls' during Tough Mudder London South at The Matterley Bowl in Winchester, Hampshire Stock Photo - Alamy Participants take on the 12 foot high 'Hero Walls' during Tough Mudder London South at The Matterley Bowl in Winchester, Hampshire Stock Photo - Alamy](https://c8.alamy.com/comp/G7EK7F/participants-take-on-the-12-foot-high-hero-walls-during-tough-mudder-G7EK7F.jpg)
Participants take on the 12 foot high 'Hero Walls' during Tough Mudder London South at The Matterley Bowl in Winchester, Hampshire Stock Photo - Alamy
![A participant takes on 'Electric Eel' during Tough Mudder London South at The Matterley Bowl in Winchester, Hampshire Stock Photo - Alamy A participant takes on 'Electric Eel' during Tough Mudder London South at The Matterley Bowl in Winchester, Hampshire Stock Photo - Alamy](https://c8.alamy.com/comp/G7EK7P/a-participant-takes-on-electric-eel-during-tough-mudder-london-south-G7EK7P.jpg)
A participant takes on 'Electric Eel' during Tough Mudder London South at The Matterley Bowl in Winchester, Hampshire Stock Photo - Alamy
![Marathons don't cut it any more – the extreme events offer the best rush | Dougie Cameron | The Guardian Marathons don't cut it any more – the extreme events offer the best rush | Dougie Cameron | The Guardian](https://i.guim.co.uk/img/static/sys-images/Guardian/Pix/pictures/2015/1/14/1421228225366/Tough-Mudder-London-South-011.jpg?quality=85&auto=format&fit=max&s=6a0dcdf988ae839b4a532c3f01c2952f)
Marathons don't cut it any more – the extreme events offer the best rush | Dougie Cameron | The Guardian
Hampshire beauty spot owner could face legal action, says planning authority, jeopardising popular festival site | Hampshire Chronicle
![A participant takes on 'Cage Crawl' during Tough Mudder London South at The Matterley Bowl in Winchester, Hampshire Stock Photo - Alamy A participant takes on 'Cage Crawl' during Tough Mudder London South at The Matterley Bowl in Winchester, Hampshire Stock Photo - Alamy](https://c8.alamy.com/comp/G7EK7G/a-participant-takes-on-cage-crawl-during-tough-mudder-london-south-G7EK7G.jpg)
A participant takes on 'Cage Crawl' during Tough Mudder London South at The Matterley Bowl in Winchester, Hampshire Stock Photo - Alamy
![Participants take on the 12 foot high 'Hero Walls' during Tough Mudder London South at The Matterley Bowl in Winchester, Hampshire Stock Photo - Alamy Participants take on the 12 foot high 'Hero Walls' during Tough Mudder London South at The Matterley Bowl in Winchester, Hampshire Stock Photo - Alamy](https://c8.alamy.com/comp/G7EK7B/participants-take-on-the-12-foot-high-hero-walls-during-tough-mudder-G7EK7B.jpg)