The best pictures as thousands of people run Cardiff's Pretty Muddy race

Thousands of people took to Cardiff's Bute Park to take part in Cancer Research UK's Pretty Muddy obstacle course. The race on Saturday, May 3, saw the park become a sea of pink and brown with around 4,000 children and adults taking part on the course at Coopers Field.

11-year-old Abi Knox, from Llandaff, sounded the horn which saw runners get underway. Abi was running in memory of her mum, Jenny, who died of breast cancer two years ago.

Abi said: "It meant a lot to start the event in my mum's memory. I took part with my friends Steffan and Lottie and it was so much fun. My favourite obstacle was the big slide at the end. It was a great day and I loved taking part."

Cancer Research say each year 20,200 people in Wales are diagnosed with cancer but through their research we can move towards a world free from the fear of a devastating diagnosis.

Ruth Amies, Cancer Research UK’s spokesperson in Wales, said: "It was a fantastic day in Cardiff - full of emotion, courage, tears, laughter and hope as people celebrated the lives of those dear to them who have survived cancer and remembered loved ones lost to the disease.

"Now we're asking everyone who took part to return the money they're raised as soon as possible. Every donation, every pound raised will make a real difference."

You can see the best pictures here: