March 25, 2026

5 Reasons Why You Need to Run More Zone 3 Miles

We hear a lot about the benefits of Zone 2 running and aerobic training, but we don't hear as much about the benefits of Zone 3 running. Below we are breaking down 5 reasons why we think Zone 3 miles can be a good addition to your training.

Yowana Wamala

5 Reasons Why You Need to Run More Zone 3 Miles

Zone 3 work sits in that sweet spot where you can push the pace without tipping into burnout, making it perfect for building strength and control. It helps you turn steady miles into efficient, repeatable efforts that translate directly to stronger long-run finishes and smoother race execution. Add it consistently and you’ll feel the gap close between easy pace and threshold pace faster than you expect.

Disclaimer:

When initially building running volume, hammering every run at a higher-than-necessary intensity can increase the risk of injury. Relaxed running plays a vital role in the foundational base-building phase.Experienced runners with an established base and solid running-specific strength can use Zone 3 runs to steal fitness, gaining additional aerobic stimulus without over-stressing the neuromuscular system.

1. Mental Toughness

The marathon is a mental battle as much as it is physical. Pushing through moderate intensities, especially when fatigued, prepares your mind for the demands of marathon racing.

2. Every System is Connected

Many runners find themselves hitting either hard workouts or relaxed Zone 2 runs, neglecting the moderate zone almost entirely. Running steady “grey zone” paces bridges the gap between recovery runs and high-intensity efforts, ensuring no training stimulus is under-utilized.

Watch Yowana's video breaking down each one of these benefits of Zone 3 running on the Supwell YouTube channel:

3. Improved Running Economy

Running at a moderate pace necessitates strong form, strengthening your running mechanics and improving efficiency at your goal race pace.

4. Bigger Aerobic Stimulus

Zone 3 running places more stress on the cardiovascular system, leading to the aerobic adaptations that are vital to unlocking your potential as a distance runner.

5. Time Efficiency

The less time you have to train per week, consider implementing more Zone 3 runs to get a bigger aerobic bang for your buck. While a runner training 11 hours per week would typically spend a high percentage of time in Zone 2 for optimal recovery, someone training 6 hours per week can get away with more steady mileage.

For more training articles, check these out:

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