Help for Heroes - 100 Miles in September

I signed up for this. On the face of it walking a hundred miles in 30 days should be a piece of piss.

It's 3.3333 miles per day. 

Donate:

https://www.facebook.com/donate/649372989368455

Sign up:

https://www.helpforheroes.org.uk/give-support/challenges/100-miles-in-september/