Episode 101: Lost 168lbs and Became a Runner - Mark Simpson's Incredible Transformation episode artwork

EPISODE · Jun 25, 2026 · 48 MIN

Episode 101: Lost 168lbs and Became a Runner - Mark Simpson's Incredible Transformation

from 12 Months to Marathon · host John

Send us Fan MailWhat happens when you reach a point where enough is enough?In this episode, I’m joined by Mark Simpson, whose journey from 25 stone (350lbs / 159kg) to completing his first half-marathon is one of the most inspiring stories we've featured on the podcast. Mark opens up about decades of struggling with his weight, being diagnosed with Type 2 diabetes, the emotional impact of obesity, and the moment he decided to take control of his life.We discuss: How Mark lost over 12 stone (168lbs / 76kg)  The role weight loss medication played in his transformation  Why consistency matters more than perfection  The mental and emotional challenges of long-term weight loss  Building confidence after years of feeling trapped  Discovering running and completing his first 10K and half-marathon  Social media, accountability, and inspiring others  Men's mental health and the importance of talking openly  Why is it never too late to change your life This is an honest conversation about health, self-belief, resilience, and what's possible when you decide to give yourself one more chance.You can follow Mark's journey on Instagram:@shrinking_simmoIf you're over 35 and training for a race, or simply looking for support with your running, you can join our free running community via the link in my Instagram bio:@12monthstomarathonIf you enjoy the podcast, please leave a review and share it with another runner. It really helps us reach more people. Support the show

Episode metadata supplied by the publisher feed · Published Jun 25, 2026

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Send us Fan Mail What happens when you reach a point where enough is enough? In this episode, I’m joined by Mark Simpson, whose journey from 25 stone (350lbs / 159kg) to completing his first half-marathon is one of the most inspiring stories we've featured on the podcast. Mark opens up about decades of struggling with his weight, being diagnosed with Type 2 diabetes, the emotional impact of obesity, and the moment he decided to take control of his life. We discuss: How Mark lost o...

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Episode 101: Lost 168lbs and Became a Runner - Mark Simpson's Incredible Transformation

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