I'm cycling every stage of the Tour de France a day before the pros do - that's 3,521km of cycling over 23 days, with 5 days in the mountains, tackling gradients of over 20% at points. It's going to be incredibly tough, but I'm really looking forward to the challenge.

It's all part of the 3 Tours Challenge (twitter.com/3tourschallenge), raising money for Cure Leukaemia. 5 of the team riding Le Tour - One Day Ahead with me will also be riding the Giro D'Italia and La Vuelta a Espana this year - a staggering achievement.

Cure Leukaemia (CL) helps to save lives and hasten global progress towards eradicating blood cancer within the next 30 years. CL supports the internationally renowned Centre for Clinical Haematology in Birmingham and a network of specialist research nurses across the UK who administer often world first and potentially life-saving clinical trials to leukaemia patients who have exhausted standard treatments. In 2017, Cure Leukaemia is committed to raising an additional £1m to double the Centre's capacity for patients, world first trials & nurses.