Every day 10 families are told their child has cancer. As the UK's leading children's cancer charity, CLIC Sargent is the only organisation to offer them all round care and support. These people do truly amazing work.

The Hellrunner is an utterly bonkers race. It is somewhere between 11 and 13 miles long. Basically, they take you through every ditch, river and swamp, no matter how deep. Time is irrelevant, getting to the end is important. The last time I did it I got to the finish line in an ambulance. Part endurance test, part obstacle course. Give generously!