5,000 runners are set to take on a unique obstacle course as the event comes to Cardiff for the first time.
The Gung-Ho! course includes the world's biggest bouncy inflatable and Europe's tallest blow-up slide.
Competitors will face ten obstacles including the 200ft-long ‘Thriller’ slide which is being hosted in Bute Park.
People will be put through their paces in the warm-up with running for, amongst other charities including local charity Tenovus Cancer Care.
The event is sold out and with thousands of people raising money for charity and taking part for many different reasons.
Gung-Ho! is a great opportunity for people to have great fun and raise money for important causes at the same time – and anyone can do it.
A bilingual play about dementia that's touring Wales has been met by sell out audiences. Swansea actress Karin Diamond, who wrote the play, told us how she wanted to show the condition in a different light.
Kathrine Jenkins and Shirley Bassey were amongst a galaxy of showbiz stars in a show honouring the Queen's birthday.
The spectacular show was held in the grounds of Windsor Castle - said to be the monarch's favourite home.
The monarch was joined in the royal box by the Duke of Edinburgh, the Prince of Wales and Duchess of Cornwall, the Duke and Duchess of Cambridge and Prince Harry.
It was a disappointing night for Welsh singer Joe Woolford who failed to win over the Eurovision juries in last night's competition.
The Ruthin star was competing as part of duo Jake and Joe in Sweden.
The pair finished third from the bottom in what was another disappointing year for the UK entry.
For the first time the points were awarded in a different way allowing for the 42 countries to give their points first.
This meant the public votes were saved to last and this made for an exciting fight between Ukraine and Australia for the top spot.
Ukraine just tipped over the edge after being awarded 534 points.
It wasn't all a loss for Jake and Joe after being awarded 12 points by Malta.
It was the first time the UK had been given full points in the last five years.
A party is to be held to celebrate a Welsh singer making it through to the Eurovision finals.
21-year-old, Joe Woolford, from Ruthin will perform alongside singing partner Jake Shakeshaft in Stockholm later tonight.
The pair were chosen to represent the UK in February and are hoping to break the UK's 19 year losing streak with their song 'You're Not Alone'.
Rob Shelley went to meet Joe's uncle who's been organising the party.
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