The MicroCast

Top 5 Science-Backed Reasons Runners DNF – And How to Prevent Them


Listen Later

GI distress. Muscle damage. Hyponatremia. Mental fatigue. Bad pacing. In this evidence-packed episode, we break down the five most common scientific causes of DNF (Did Not Finish) in ultramarathons—and how better training can help you avoid them.

Whether you're training for your first 50K or aiming to shave time off a hundred-miler, this episode covers actionable strategies to improve your fueling, hydration, strength, mindset, and race-day decisions.

🎙️ In this episode, Coach Zoë and TJ cover:

  • The real reason most runners DNF—and it’s not bad luck

  • How to train your gut (and brain) for ultra success

  • What "lifting heavy" means for runners (and what it doesn’t mean)

  • Why tracking calories burned is NOT hot

  • How to stop sabotaging your race with early pacing errors

⏱️ TIMESTAMPS
00:00 – Pre-wedding chaos and podcast commitment
06:40 – Hot or Not: Progression Runs, Pausing Your Watch, and Calorie Tracking
22:19 – Strength Training: What "Heavy" Really Means for Runners
38:30 – DNF Science Deep Dive: GI distress, muscle damage, electrolytes, mental fatigue, pacing
01:18:10 – Why most DNFs = training errors, not race-day flukes

📣 Subscribe so you never miss an episode
💻 Learn more about coaching: https://www.microcosm-coaching.com
📸 Follow us: https://www.instagram.com/microcosmcoaching

...more
View all episodesView all episodes
Download on the App Store

The MicroCastBy Microcosm Coaching

  • 5
  • 5
  • 5
  • 5
  • 5

5

36 ratings


More shows like The MicroCast

View all
Trail Runner Nation by Trail Runner Nation

Trail Runner Nation

1,169 Listeners

The Strength Running Podcast by Jason Fitzgerald

The Strength Running Podcast

1,335 Listeners

The Freetrail Podcast with Dylan Bowman by Dylan Bowman

The Freetrail Podcast with Dylan Bowman

780 Listeners

Some Work, All Play by David Roche and Megan Roche

Some Work, All Play

1,855 Listeners

The Drop by Believe in the Run

The Drop

374 Listeners

Fuel for the Sole by Fuel for the Sole

Fuel for the Sole

290 Listeners

Singletrack by Finn Melanson

Singletrack

932 Listeners

Trail Society by FREETRAIL

Trail Society

291 Listeners

The Trailhead by UltraSignup

The Trailhead

110 Listeners

Tread Lightly Running Podcast by Amanda Brooks and Laura Norris

Tread Lightly Running Podcast

357 Listeners

Everyday Ultra by Joe Corcione

Everyday Ultra

187 Listeners

The Boulder Boys Show by The Boulder Boys

The Boulder Boys Show

176 Listeners

The Trail Network Podcast by The Trail Network Podcast

The Trail Network Podcast

90 Listeners

Marathon Handbook Podcast by Marathon Handbook

Marathon Handbook Podcast

47 Listeners

Your Diet Sucks by Zoë Rom

Your Diet Sucks

145 Listeners