Joe, who won The X Factor in 2009, took part in the event yesterday (19 October) before crossing the finish line and posing for a selfie.
In the snap, the Geordie singer is wrapped in a foil blanket with his medal around his neck and looks like he is wearing a face pack!
We don't, however, think he was trying out a new beauty treatment - it was just the results of his gruelling run!
Posting the photo on Instagram, Joe said: "Got quite muddy this morning!" You don't say....
Recently, 23-year-old Joe has become quite the fitness fanatic and is often taken selfies while out running. This is the first time we've seen him looking so filthy though!
Well done, Joe. Good work!
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