A woman has achieved a lifetime ambition by completing a North Pole marathon in seven hours and 45 minutes.
Kate Charles was running in aid of a children's hospice in Kent
Kate Charles, 33, a finance officer from Brighton, had previously run on all seven continents.
She completed the Grand Slam at the weekend which she prepared for by training at temperatures of -10C.
Speaking to BBC South East reporter Mark Norman, who accompanied her on her journey, she said: "After eight months of training, it was well worth it."
Ms Charles, who covered 26.2 miles of deep snow and hard ice by covering one circuit 16 times, said: "You can't see where you're going.
"One false move and you start to trip. That's what tires your legs out, it's just the stumbling."
And she said she began to feel the effects half-way round: "My hip was starting to give out, and my knees.
"It became a matter of just survival, making sure I was going to be okay."
Ms Charles, who had to cope with temperatures of -20C, said: ""It was like running in a bowl of sugar out there and that got to all of us, I think."
Fifty four runners completed the race.
Later, Ms Charles said: "It is beautiful out there when it's really quiet and the sun's out. It's fantastic scenery."
Ms Charles completed her first marathon in Kenya in June 2002, and has since run in Chile, Norway, the US, Australia, Thailand and Antarctica.
She ran her latest marathon in aid of Demelza House, a residential children's hospice based near Sittingbourne, in Kent.
Her preparation also included running in the ice and snow of Switzerland, and training with the army.