The Marathon Secret: Why Your "Chassis" Matters as Much as Your Engine
By James Baxendale on 19 February 2026
To help you reach the finish line stronger and faster, we’ve developed a specialized strength and conditioning (S&C) protocol. This program isn't just a list of gym exercises; it is built on the proven results of biokineticists, sports scientists, and elite running coaches. These industry experts have consistently shown that a 2-day-a-week commitment to strength training is the "magic pill" for marathon success.
Why 2 Days a Week?
Research indicates that heavy resistance training can improve running economy by up to 5%. This means you use less oxygen to maintain the same pace. Furthermore, because running involves impact forces of up to 3x your body weight, building muscle density is your primary defense against "runner’s knee" and IT band syndrome.
The "Core 5" Essential Exercises
1. Single-Leg Romanian Deadlift (RDL) The "gold standard" for runners. By targeting the hamstrings and glutes while demanding ankle stability, it fixes the imbalances that lead to late-race fatigue.
- Pro Tip: Keep hips square to the floor to maximize hip control.
2. Back Squats (or Goblet Squats) These build raw power in the quads and glutes. Stronger legs absorb the repetitive shock of 42.2 kilometers, protecting your joints from the pavement.
- Pro Tip: Aim for depth (thighs parallel to the floor) for maximum glute activation.
3. Single-Leg Calf Raises The Achilles tendon is a common "engine failure" point for marathoners. Slow, controlled raises build the tendon resilience needed for high-mileage weeks.
- Pro Tip: Use the edge of a step and count 3 seconds up, 3 seconds down.
4. Walking Lunges Lunges mimic the running gait more closely than any other move. They ensure your pelvis remains level even when you hit the "wall" at the 32km mark.
- Pro Tip: Ensure both knees form 90-degree angles to maintain functional alignment.
5. Planks & Side Planks Your core is the bridge between your upper and lower body. A strong core prevents "form breakdown"—the inefficient wobbling that wastes precious energy in the final 10km.
- Pro Tip: Actively squeeze your glutes and pull your belly button toward your spine.
How to Integrate This Into Your Training
For a marathoner, strength work should support your running, not replace it.
- Peak Training: Stick to 2 sessions per week. Focus on maintaining strength without adding excessive fatigue.
- The Taper: Stop all heavy lifting 7–10 days before race day to allow your muscles to fully recover and super-compensate.
Stop just running; start building a body that can handle the distance. Your PB Â will thank you. Download your S&C Protocol here.
https://drive.google.com/file/d/1DvAXVPIgRwiCccYmtFxenCZDSV284hCK/view?usp=sharing