Cyclists begin 24-hour Isle of Man TT course challenge
Fifteen cyclists are attempting to cycle continuously around the Isle of Man's 37-mile (60.725 km) TT course for 24 hours to raise money for charity.
Four men completed the challenge last year on folding bikes raising more than £10,000 for a brain charity.
Taking part is Kirstie Harper who will be the first woman to attempt the challenge as a solo rider.
The group is fundraising for charities including the Make A Wish Foundation and the RAF Charitable Trust.
In a separate event on Saturday, 60 cyclists will tackle one, two or three laps of the mountain course as part of the the Isle of Man cycling sportive.
The Isle of Man TT course is used annually for the TT races and Manx Grand Prix - it includes more than 200 corners and 2132 ft of ascent.