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Choosing a Shoe

One size does not fit all. At Newton Running, we design our shoes to support and strengthen optimal running form across a variety of running types and levels. We have a shoe for nearly everyone, and we encourage you to try us out. Here is how to find the right shoe for you.

Choosing a Shoe

There are three major factors to help you choose the right shoe:

1. Running Gait & Natural Support

First, identify your foot type. Stand in front of a mirror with bare feet shoulder-width apart and bend your knees, keeping your heels on the ground. Watch the bones on the inside of your ankle as you bend and straighten your knees. If the bones move inward more than 1/3 inch, you likely pronate during your running gait. If your ankle bones do not move inward or outward significantly, you have a neutral gait. If your ankle bones move outward, you may be one of the rare people who supinate. Also, if your big toe is shorter than your second toe (the common Morton’s foot type), you likely pronate.

Other methods to determine your running gait and support needs include:

  • Look at the wear on an old pair of running shoes (not walking shoes, which show your walking gait). Place the shoes side by side on an elevated surface like a table, with the toes pointing towards you. Look at the shoes from eye level. If either or both lean noticeably inward, you likely pronate.
  • Look at the sockliner in an old pair of running shoes. If the foam is compressed specifically under the ball of the big toe, this also indicates pronation.


If your feet pronate, look for our Stability, Universal and All-Terrain models. If your feet supinate or you have a neutral gait, look for our Neutral, Universal and All-Terrain models.

2. Running Experience

If you're a beginner runner, alternate run/walk or are a heavy heel striker who wants to switch to Newton running, you may wish to start with the Guidance or All-Terrain lines. These shoes offer midfoot support and a wider platform for greater ground coverage, and the entire outsole is layered with carbon rubber for better durability.

If you're an experienced natural runner, you may prefer the Performance Trainer line. This line is lighter, more flexible and more responsive than our Guidance or All-Terrain lines.

3. Terrain, Speed and Distance

Our Guidance and Performance lines are best for the road, tracks, paths, grass and hard surfaces. Our All-Terrain shoes are designed for all conditions, but are particularly beneficial for off-road conditions.

You might consider one of our Performance line shoes for faster runs. More experienced runners might even use the Performance line shoes for all runs. The Guidance and All-Terrain lines are great for everyday training.

Most of our shoes can be used for training and racing any distance, from 5k to marathon and beyond. The MV2 is designed for short or mid-distance racing and speed workouts.

Selecting A Shoe Size

Remember to fit for the largest dimension of your largest foot, not simply length.