Blue Peter presenter Helen Skelton has completed the gruelling 78 mile Namibia Ultra Marathon - the second woman in the world to ever to finish the mammoth run.
Helen, who used to work for Newsround, managed the desert race in 23 hours and 45 minutes - just 15 minutes under the time limit. It's the equivalent of running THREE marathons.
Helen, 25, came eighth and couldn't believe it when she crossed the finishing line - to see her mum waiting for her. She'd flown out as a surprise.
"It was a gruelling experience, but one I'll never forget," she told Newsround. "There were tough times but also amazing times."
Check out the blistered feet! Helen is due to run the London marathon later in April, but she has to to see if her feet have recovered enough.