Podcasts · The Marathon Podcast

#138 The fatigue symptoms you NEED to listen to (iron deficiency) | With Marc Lennox

25 Mar 2026 · 1 h 27 min

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Marc Lennox is a 54-year-old 2:43 marathoner, and has learned how iron deficiency can affect us as marathoners. What are the symptoms? What can we do to avoid it? And more importantly, how can we get back to running?

Time stamps:

00:00:00 – Host's Welcome and Marc Lennox Episode Preview

00:00:55 – From Overweight to Marathoner: Marc's Transformative Journey

00:06:22 – Achieving a 2:53 Marathon and Runner Identity

00:15:08 – Public Reaction and Early Marathon Training Philosophy

00:21:22 – How Family Inspired Running and Injury Management

00:26:39 – Marc's Detailed Training Approach and Tempo Runs

00:30:30 – Mysterious Illness, Hospitalization, and Iron Discovery

00:39:09 – Determined Comeback and Realizing Iron's Crucial Role

00:48:58 – Infusions, Blood Tests, and Personal Ferritin Levels

01:00:58 – Understanding Sudden Fatigue and Iron's Link to Injuries

01:09:33 – Minimizing Impact: Foot Strike Hemolysis and Shoe Choices

01:11:43 – High Mileage, Workouts, and Marathon Block Strategy

01:21:38 – Marc's Motivation and Host's Personal Training Update

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The episode on the publisher’s site ↗ (opens in a new tab)