Twelve hardy Weybridge mums will undertake the Sunwalk 2007 power-walking marathon in Iceland this June.

The annual event takes place at Lake Myvatn in the Land of the Midnight Sun, which was created 2,300 years ago by a volcanic eruption.

Four of the group have experience, having completed the Playtex Moonwalk in London last May, raising over £6,000 in the process.

Georgina Clapton-Hall, one of the participants, said: "This year the supporting team has grown and our Iceland challenge will help ensure that the ongoing research programmes and victim support can continue."

All proceeds will go to Breakthrough Breast Cancer and the Weybridge-based Sam Beare Hospice. To make a donation, visit bmycharity.com/gogirls.