The BBC Radio 2 star was supported by the Prince of Wales before the end of her Great Northern Marathon Challenge on FridaySara Cox receiving a message from the Prince of Wales during her Children In Need challengeSara Cox receiving a message from the Prince of Wales during her Children In Need challenge(Image: PA)

Sarah Cox was left overcome with emotion as she kick-started the last day of her mammoth Children In Need challenge with a message from royalty.

The BBC Radio 2 star will end her Great Northern Marathon Challenge on Friday (November 14), having covered the equivalent of five marathons, over 135 miles, in five days.

Carrying a Pudsey Bear backpack, Sara will complete her journey in Pudsey, Leeds, where the charity’s bear is named after, having started in Kielder Forest and travelled through Northumberland, Durham, North Yorkshire and West Yorkshire.

The challenge, which has so far raised more than £4 million, has now been supported by Prince William, who recorded a video message, which was played by Scott Mills on his Radio 2 breakfast show.

The Prince of Wales said: “Sara, massive congratulations for what you’re doing.

Sara was surprised by the message(Image: PA)

“You’re so nearly there, just a little bit further, and I know the people of Pudsey will all come out and welcome you with huge open arms, big hugs, and hopefully, lots of your favourite crumpets.

“Keep going, you’ve done fantastically well, and the nation’s so proud of you.”

The challenge is the longest tackled by Radio 2 as part of the annual fundraiser. Calling the current fundraising total “incredible”, Sara said: “Everybody just giving a fiver or a tenner did it, that is amazing.

“Thank you so much. Thanks to everybody who has donated, you’re absolutely awesome.”

The BBC’s annual Children In Need telethon starts on BBC iPlayer and BBC One at 7pm on Friday.

The evening, hosted by Paddy McGuinness, Big Zuu, Mel Giedroyc, Rochelle Humes, Vernon Kay and Lenny Rush, will see performances from the likes of McFly singer Tom Fletcher and girl band Remember Monday, alongside sketches from BBC favourites including The Apprentice, EastEnders and Gladiators.