Hundreds line up along the Thames for the start of a Sport Relief mile in London. It is one of many similar events taking place across Britain.
Bang Goes The Theory's Liz Bonnin and Dallas Campbell limber up alongside BBC Director of the North and BBC Breakfast's Charlie Stayt
There are some very creative costumes at the event, including a rather surreal vision of a man wearing a horse's head.
Even Scooby Do is doing his bit for charity, as well as taking in the atmosphere.
Did The Joker overtake Batman and Robin?
Having performed some music at the start of the race, a kilted musician takes a stroll along the course.
Some participants go to great lengths to make costumes and banners. Here's one that really stands out.
Balloons are all the rage. Maybe a plan to float to the finish line?
School Reporters were also at the race. Rachel and Gracie, from Guildford County School, ask Blue Peter Presenter Helen Skelton about her memorable kayak along the Amazon River.
A panda bear gives a low down of the day so far. Must be hot in there!
Cliff Parisi, who plays Minty in EastEnders, is delighted to join fellow Sport Relief miler Eddie Izzard. The comedian has already completed 43 marathons and plans to run eight miles for the Sport Relief event. Will Minty keep up?
Scootering along the race mile towards the finish line should save this young participant a few minutes.