The Millennium Stadium transformed into a giant assault course for the high-octane Men’s Health magazine Survival of the Fittest event in Cardiff today (Sunday 3 October).

Wales’ capital city was selected as the host location to kick off the 10 kilometer running challenge, organised by the biggest men's lifestyle magazine in the UK, following the success of the inaugural event in Cardiff on the same weekend last year.

Dubbed the Tri-Nations Series, the Cardiff leg attracted over 2,500 sporty men and women to face the tough route interspersed with obstacle zones every kilometre, before the event heads to Nottingham (October 9) and Edinburgh (October 17).

With the unique features of each host city woven into the route’s infrastructure, the Millennium Stadium featured as the highlight of the Cardiff run, which began in Cardiff Bay’s Oval Basin at 10am.

Claire Matthews, Marketing Director for Men’s Health magazine, said: “Men's Health is delighted to return to Cardiff for the second year of Men's Health Survival of the Fittest' powered by Land Rover.

“Despite the weather, we've had another fantastic turn out for this brilliant, exciting adventure race with over 2,500 signed up to start the race today – men and women!

“We hope everyone had a great day, including all the spectators and friends and families too. And thanks to Cardiff for its continued support of our signature race event.”