Tomorrow, hundreds of runners will take on a race around Hyde Park with a difference.
After a fairly standard 5km run, competitors have to climb 28 floors of the Hilton Hotel on Park Lane.
For all of those who finish the race, champagne and bacon sandwiches are being served at Galvin at Windows restaurant.
Star of TV's First Dates Fred Srieix is one of the organisers and will be taking part alongside Chris Galvin. They visited the London Live studios to discuss the event.