Tom Daley is currently participating in a grueling four-day trek, rowing, cycling, running and swimming event from London to Plymouth.The event is raising money as part of the Hell of a Homecoming for Red Nose Day campaign for the Comic Relief charity organization.“I’ve never done anything like this before,” Daley revealed in a promo. “I mean, I’ve trained for the Olympics, but I’ve never done any kind of endurance training, let alone swimming in that freezing water.