I finished! But in a disappointing 4 hours and 45 minutes. I had to walk several stretches of the second half, because my legs seized up. But I got two nice massages from St John's Ambulance helpers, and an even nicer one from Charlotte at the WaterAid reception after the race - almost worth the pain!

It's not too late to sponsor me, if you haven't done so already. I'm collecting sponsorship for WaterAid, who work with local communities in developing countries to deliver sustainable water facilities. One in eight of the world's population lacks access to clean water, and one in three to proper sanitation; but it takes just £15 to provide these for a person in Africa or Asia.

Donating through Justgiving is (they say) "quick, easy and totally secure. It’s also the most efficient way to sponsor me: WaterAid gets your money faster and, if you’re a UK taxpayer, Justgiving makes sure 25% in Gift Aid, plus a 3% supplement, are added to your donation".

So please sponsor me now!