A footballer freestyler is bidding to set a world endurance record.
John Farnworth, from Preston, is aiming to cross the world's largest frozen lake in Siberia while keeping a ball up in the air.
If successful he'll perform half a million touches over the equivalent of two back-to-back marathons.
He'll camp overnight on the lake where temperatures often drop to below minus 20c.
- Video report by Ashley Derricott
John has already set eight world records, his latest during a similar attempt in the Sahara Desert last year.
He told ITV News: "This is going to be my toughest challenge yet. Battling sub-zero temperatures and freestyling on ice will be an experience like no other."
John will attempt the record next month to raise funds for Cancer Research UK.
You can donate to John's fundraising effort here.
You can also donate by texting 70180 with the code:
- ICE5 to donate £5
- ICE10 to donate £10
- ICE20 to donate £20