Why Easy Miles Matter More Than You Think

Let’s be honest—when you first start training for a marathon, especially if you’re newer or somewhere in the middle of the pack, it’s easy to think that the harder and faster you run, the better you’ll get. I get it. I’ve been there too. But here’s the real truth: running easy is actually the foundation that sets you up for everything else. It’s not fancy. It’s not always exciting. But it’s 100% necessary.

Why Building an Aerobic Base Matters: Picture your body like a massive highway system. The more roads (capillaries) and fuel-efficient cars (mitochondria) you have, the smoother and faster your travel will be—without burning out. Aerobic base work strengthens your entire engine, making running at all paces feel easier over time.

Here’s How We Do It:

• Easy Runs: You should be able to carry on a conversation. If you can’t, slow it down.
• Long, Slow Distance (LSD) Runs: The bread and butter of endurance. These gradually get longer, up to 2-3 hours eventually.
• Strides: Short, 20-second accelerations done after easy runs. They keep your legs feeling snappy without adding extra stress.

Sample Aerobic Building Week:

• Monday: Rest or some light cross-training (like yoga or cycling).
• Tuesday: 30-minute easy run + 4 strides.
• Wednesday: 45-minute easy run.
• Thursday: 30-minute easy run.
• Friday: Rest or an easy bike ride.
• Saturday: Long run—start with 6-8 miles and build from there.
• Sunday: 30-minute recovery jog (super slow, think “shuffle pace”).

Why This Works (The Science):

• Mitochondrial Growth: You build more of the “power plants” in your muscles, helping you create energy more efficiently.
• More Capillaries: Think of these as extra highways that shuttle oxygen to your muscles.
• Fat-Burning Boost: You teach your body to save its limited stores of glycogen and instead burn fat—critical for anything over 90 minutes.

How to Progress:

• Beginners: Aim for 20-30 minutes of running, 3-4 days per week.
• Intermediate Runners: Go for 30-60 minutes, 4-5 days a week. Start stretching that long run out slowly.
• Advanced Runners: 45-90 minutes daily, 5-6 days a week. Long runs will become true “adventures” (and teach you patience and grit).

A Few Pitfalls to Avoid:

• Running too fast on easy days. (Use a heart rate monitor—aim for 60-75% of your max heart rate.)
• Skipping your rest days. Recovery is when the magic happens.
• Forgetting to fuel your runs, especially anything over an hour. A little extra carbohydrate can go a long way.

Real-Life Reminder: Even the world’s best marathoners—yes, even the ones winning Olympic medals—spend around 80% of their training running easy. Not hammering. Not “beasting.” Easy. Trust that slowing down now will help you speed up later.

The Bottom Line: You’re not just logging miles to check a box. You’re building an engine that will carry you through 13.1 or 26.2 miles with strength and confidence.

So next time you head out for an easy run and feel that little voice saying “this is too slow,” remember: you’re laying the bricks of a very strong foundation. And you’re doing it the smart way.

Always in your corner,

Coach Misty