On Saturday 17 June Mark Holding and Seb Tucknott will be cycling the gruelling hills between Winchester and Eastbourne in just a day to raise money for two charities - Chestnut Tree House Hospice and Crohn's & Colitis UK.
But what is already a tough challenge to complete is made even harder by chronic health conditions that both Mark and Seb live with.
Mark has ankylosing spondylitis (AS), Crohn’s disease and psoriasis, while Seb has ulcerative colitis.
These conditions cause both Mark and Seb pain and extreme fatigue which has made training more difficult.
Please donate to whichever of our two charities you would like. If you have no preference then please donate to the page which currently has the fewest donations.