Radio 1 DJ Greg James will be running the Bath Half Marathon for a breast cancer charity next year.
The 26-year-old will join fellow broadcaster Dermot O'Leary in the 200-strong Coppafeel! team at the event in March.
The drivetime presenter is following the footsteps of his Radio 1 colleague Fearne Cotton, who ran the race in 2011 for the charity which raises awareness of breast care.
The organisation is the lead charity next year, with its team of "hooters" running with giant boobs strapped to their backs or fronts.
O'Leary is running for the charity for the second year running.
James said: "I was recently collared by the two founders of CoppaFeel! and having listened to their story and what CoppaFeel!'s mission was, I agreed to run 13.1 miles in aid of them.
"I love running and this is a great cause to support while doing so. And seeing as Fearne has also done it, I couldn't really say no, could I?"
Mel Taylor, charity director at organisers Running High, said they were delighted to have the two celebrities among the 15,000 entrants in the March 3 race.
"Both Greg and Dermot have infectious personalities and I couldn't think of two better role models to help spread CoppaFeel!'s message far and wide."
Among the Coopafeel! team this year will be a group of young women who have experienced breast cancer, called the Boobettes.
They will be using their diagnosis to educate others about breast care.
The charity was founded in October 2009 by Kristin Hallenga who herself had been misdiagnosed twice by the age of 23, and now lives with secondary breast cancer.
The charity educates young people on the importance of checking their breasts regularly and knowing the signs and symptoms of cancer.
For more information on entering the Bath Half and to apply for a charity place for Coppafeel! or another featured charity, go to www.bathhalf.co.uk or www.coppafeel.org. You can also email running@coppafeel.org.
