While participants do need to be reasonably fit to stand a realistic chance of success in the challenge , most active people , and particularly those who are young or used to hillwalking , should not be put off by the daunting prospect of climbing three famously high mountains in succession .

You need to be quite fit to do the challenge in NUMBER@1 hours , but people who are young and active , and people who are used to hillwalking , can do it .
