Comedian Mark Watson has announced his latest project - a series about marathons to tie in with the London marathon and a marathon gig.

He explained more in his latest blog. "It’s a 13-episode comedy series for Audible about the London Marathon. I’ve written it all and the cast is bloody amazing. It includes, but is not limited to, Sara Pascoe, Derren Brown, Rufus Hound, Harry Enfield, Sofie Hagen, Desiree Burch, Angela Barnes, Adam Kay, David Baddiel, Lolly Adefope, Ray Winstone and lots more. We’ve recorded some of it already and I think it’s going to be one of the best things I have ever made."

The series comes out at the end of February and to mark the release Watson is doing a 26.2-hour long show (to mirror the format of marathons). It takes place at the Pleasance in London, on February 27th and 28th. It will start at 9.48pm and continue until midnight the following day – "or until the death from exhaustion of everybody in the room: whichever occurs sooner."

Tickets are on sale here: www.pleasance.co.uk/event/mark-watsons-comedy-marathon#overview

All ticket proceeds will be donated to the Dementia Revolution, a joint campaign run by charities Alzheimer’s Society and Alzheimer’s Research UK as Charity of the Year for the 2019 Virgin Money London Marathon.

Watson has performed a number of marathon shows since 2004. His last marathon show was also at the Pleasance in aid of Comic Relief in 2015.

Fans can also get into the show by coming up with an idea for a stupid challenge: "the funnier or weirder the better, but genuine efforts at bucket-list-item-achievement are also more than welcome. Email [email protected] with these and we will contact you soon."

Watch a live stream here.