article_snippet.sent: Scroll down for video .
article_snippet.sent: When you see the camels coming up behind you, you're in danger of being cut off for being too slow. '
article_snippet.sent: In the second-to-last push of the race I was only just in time - by 13 minutes.'
article_snippet.sent: When I get back to the UK
article_snippet.sent: I'm going straight to the surgeon to see what's gone wrong. '
article_snippet.sent: I've not been in hot stuff on foot before and
article_snippet.sent: it's very, very difficult. '