A Complete Core Workout for Runners

Hi, I’m Kat, physiotherapist and co-founder of Lake Therapy. If you love running, you’ve probably heard that a strong core can make all the difference — and it’s true. Whether you’re training for your first 5K or preparing for a marathon, your core muscles are the foundation of every stride.

If running is already causing pain, take a look at running with knee pain or our sports injury treatment in Farnham. My 8 time-efficient exercises for endurance athletes make a good companion to this workout.

Running puts up to three times your body weight through your joints with every step. Without proper stability, that force can lead to strain, fatigue, and eventually injury. Building core strength helps your body absorb impact, maintain posture, and run more efficiently — making it one of the most important parts of your training. In this guide, I’ll walk you through effective core exercises for runners that support strength, control, and injury prevention.

Why Core Strength Matters for Runners

Your “core” isn’t just about visible abs — it includes the deep stabilising muscles that connect your upper and lower body: the diaphragm, transverse abdominis, obliques, pelvic floor, and multifidus. These muscles create a strong, supportive cylinder around your spine, helping you stay steady even when fatigue sets in.

When your core is weak, your body has to compensate. This can show up as hip pain, tight hamstrings, or lower back discomfort after long runs. That’s why consistent core exercises for runners are essential — not only to improve performance but to reduce your risk of common running injuries.

Step 1: Activate the Deep Core

Before diving into planks or crunches, it’s important to switch on the deep stabilising muscles that support your spine. These gentle activation exercises are a great starting point:

• Multifidus activation – Lie on your back with your knees bent. Gently pull your tummy in to press your low back into the floor, then roll your pelvis the other way to create a small arch under your low back. Repeat 3-4 times.

• Transverse abdominis activation – Lie on your back with both knees bent. Place two fingers just inside your hip bones. Gently draw your belly button in and up about a centimetre — you’ll feel a tightening beneath your fingers.

• Pelvic floor activation – Gently contract the muscles you’d use to stop the flow of urine, then relax fully. Keep breathing throughout.

• Diaphragmatic breathing – Place one hand on your chest and one on your stomach. Take a deep breath so your belly rises (not your chest), then slowly exhale.

These small but powerful movements form the foundation of all core exercises for runners, helping your body learn to stabilise before you add resistance or load.

Step 2: Build Functional Strength

Once you’ve mastered activation, you can move on to dynamic exercises that challenge your core in multiple planes of motion. These are often called “cross sling” exercises because they train the muscles that wrap diagonally across your body — just as they do when you run.

• Planks – Whether front, side, or reverse, planks work nearly every muscle in your core. Keep your hips level, push through your shoulders, and engage your glutes.

• Chops – Kneel on one knee and use a resistance band or cable to pull diagonally across your body, engaging your obliques and shoulders.

• Bird dogs – On hands and knees, reach one arm forward and the opposite leg back, keeping your torso still. Alternate sides.

• Dead bugs – Lying on your back, lift your arms and legs in the air. Slowly extend one arm and the opposite leg without arching your back, then return and switch sides.

These core exercises for runners mimic the rotation, balance, and control required for strong, efficient running form.

Step 3: Keep It Consistent

The key to building a stronger core isn’t doing endless crunches — it’s consistency. Aim to add 10–15 minutes of core exercises for runners into your routine three times per week. You’ll likely notice better posture, smoother running, and fewer aches in just a few weeks.

Remember: your core doesn’t just protect your back and hips — it powers every stride you take.

Your Next Step

If you’re struggling with lower back or hip pain while running, if any of the above exercises hurt, or if you want a personalised programme of core exercises for runners, our Lake Therapy team can help. We’ll assess your movement patterns, pinpoint any imbalances, and design a tailored plan to strengthen your core and support your performance.

You can book an Initial Consultation to start your journey, or arrange a free Discovery Call  to chat about how we can help you build strength and run injury-free.

<

p data-start=”5132″ data-end=”5147″>Warmly,
Kat