I'm trying to raise awareness (and funds) to help cure colon (bowel) cancer, which is still the biggest cancer killer of non-smokers in the UK.

Funds go directly to 40tude, a brilliant charity funding research at the National Bowel Cancer Screening Centre at St. Mark's Hospital.

If you'd like to donate, your support will mean a great deal to everyone on this challenge as we start to feel the effects of the high altitude and the multiple vertical steps awaiting us as we make our way from the Annapurna foothills up into the mountains, flying the flag for 40tude.

Tom Campbell