Former pro rugby player, Damien Browne, talks about the hardship and isolation over the course of the nine weeks he spent rowing across the Atlantic solo.
26-year-old Shane Finn has run 47 marathons. He tells us all about what motivates him along with his plans for world domination as an entrepreneur.
Andrew Cotton has surfed the biggest waves on the planet. Last year he hit the headlines for one of the worst wipeouts of all time. Now six months into his recovery from a broken back, Andrew tells us what it's like to surf waves the size of 2-storey houses.
Stephen Redmond is first person to swim the 7 Oceans. Here he tells us how he faced box jellyfish, sharks and severe sea sickness as he completed his incredible challenge.
Nikki Bradley was diagnosed with cancer at 16. She's on crutches permanently and faces a full leg amputation. That won't stop her climbing mountains though.
Moire O'Sullivan is one of Ireland's top mountain runners and adventure racers. She tells us how she managed to win the National Adventure Racing Series just months after giving birth.
Eoin Keith on how he went from playing pitch&putt to being a world-class ultra runner. He also talks training, diet and how turning 50 is an advantage.
Hard As Nails is a weekly podcast produced by Outsider.ie. We interview some of the most hardcore people on the planet to find out what makes them tick.