1,000km is 621 miles, 23.8 marathons, 121 miles more than the lifespan of a typical pair of running shoes and 18 miles more than a straight line from Land's End to John o' Groats. 

Over 100 days, it's an average of 10k every day - for over three months. Miss a day, and I'm on the hook for the best part of a half marathon the next day. 

So why do it? Well, more and more people ask for sponsorship for marathons, half marathons or even a single 10k. I thought this might be a fresh way to approach running sponsorship a bit differently.

And most importantly, I'm supporting the outstanding work of Providence Row Charity, whose aim is to help people get off - and stay off - the streets. So please give generously!

I'm starting on 1st March, and will be tracking my distances using a GPS watch and the "Run Keeper" app. Regular updates on here and on Facebook!