THIS Workout Will Help You Get A Marathon PB - The Running Channel

Aug 13, 2025

Intro: This is a quick summary of THIS Workout Will Help You Get A Marathon PB from The Running Channel. It’s a great watch — we’re breaking it down so you can try the workout today. Be sure to check out the full video for all the details.

Key Points:

The session is adapted from Chris Thompson’s “Mammoth Marathon” workout, focusing on glycogen‑depletion to teach your body to hold marathon pace when fuel‑low.
It combines a short warm‑up, 8 × 2‑minute 5K‑pace intervals, 80‑second easy jog/walk recoveries, then a sustained marathon‑pace run of 45–60 minutes.
No nutrition is taken during the workout – the goal is to train hard while “empty‑handed.”
The workout is tough but can be scaled: shorten intervals, adjust recovery, or run at a slower pace if you’re newer to distance running.

Workout Example (actionable):

Warm‑up – 5‑10 min easy jog.
Intervals – 8 × 2 min at your current 5K race pace (≈ 25 min total). After each 2‑min effort, jog or walk for ~80 sec (light enough to keep legs moving).
Marathon‑pace segment – Run 45 min (or up to 60 min) at the pace you aim to hold for a marathon PB (typically 9:30–10:30 min per mile for many).
Cool‑down – 5‑10 min easy jog. Tip: If you can’t sustain the full 45 min, stop at 30 min and build up over weeks. Use the Pacing app to set your exact 5K and marathon‑pace targets.

Closing Note: Give this workout a go, tweak the paces to match your current fitness, and let your body adapt to running hard on low glycogen. You’ll likely feel stronger on the second half of your marathon. Remember, you can always customize the intervals and marathon‑pace segment in the Pacing app to fit your own goals. Happy running!