Saucony Zealot ISO 4

The expected release date for the Saucony Zealot ISO 4 is on November 03, 2023.

The Saucony Zealot ISO 4 will have the following main updates:

  • The Saucony Zealot Iso 3 will be an improved design on this neutral running shoe.
  • It will be designed to be much more lightweight and nimbler than its predecessor.
  • There will be breathable engineered mesh uppers that will be more stretchable and durable.
  • Fewer Overlays will give it a more natural and sleeker look, with some new color and design models that will be available.
  • There will be FlexFilm Overlays on key areas for reinforcements to improve durability.
  • The cushioning will be improved to be softer and more responsive.
  • The Molded Heel collar will give a more locked-down fit and support.

Previous model of the Zealot ISO:
The Saucony Zealot ISO 3 release date was on April 7, 2017.

Latest Version of the Saucony Zealot ISO


Saucony Zealot ISO



  • The MSRP (Manufacturer’s Suggested Retail Price) for the Saucony Zealot ISO 4 will be $85.
  • With some new additions, the Saucony Zealot will have a slight price increase.
  • You can look at different retailers for more price options.

Arch support and pronation controlArch Support and Pronation Control

  • The new model will be a neutral running shoe.
  • It will offer plush cushioning, ideal for a forefoot and midfoot strike.
  • The shoe will be suitable for a high or normal arch type.


  • Ideally, it will be a road running shoe.
  • However, you could use it as a daily wear shoe on multiple hard surface types.


  • The Saucony Zealot ISO 4 will be a daily running shoe.
  • It will be suitable for daily running or jogging, for long distances.
  • It will not be suitable for marathons and racing, though.


  • The Saucony Zealot ISO 4 will be much more durable this time around.
  • With FlexFilm overlays in key areas and improved sole, it will offer much better durability and quality in construction.

Fit and SizingFit and Sizing

  • The fit will be medium with a roomy toe box.
  • The uppers will be more flexible and adaptable in fit.


  • The men’s model will weigh 241 grams, and the women’s model 207 grams.
  • Generally, the new model will be extremely lightweight for a road running shoe.

Elevation of the Saucony Zealot ISO 4

Heel HeightHeel Height

  • There will be a heel height of 26 mm.
  • There will be good stability in the secure heel counter.

Forefoot HeightForefoot Height

  • The Forefoot height will be 22 mm.
  • The height will be perfect for flexibility in the midfoot area.

Heel-to-Toe DropHeel-to-Toe Drop

  • A 4mm heel-to-toe-drop will be expected.
  • The drop will be quite low for a neutral running shoe, giving you better ground contact and a more minimalist feel.

Components of the Saucony Zealot ISO 4


  • The Zealot ISO 4 will have an updated Tri-Flex rubber outsole that will be more flexible and durable.
  • The Tread will offer improved traction on hard surfaces.


  • The Midsole of the new model will have a 3mm thickness that will be more lightweight and minimalist.
  • It will have an EVERUN Top sole for cushioning hat will be more energizing and lightweight.
  • Cushioning will be slightly softer and lighter.


  • The Saucony Zealot ISO 4 will have uppers consisting of textile and synthetic materials.
  • It will be much more breathable and lightweight with engineered mesh.
  • There will be FlexFilm overlays for high-wear areas to improve durability.
  • The Fit will be much more stretchable and adaptable.

Saucony® Zealot ISO vs. Triumph ISO


Saucony Zealot ISO 4

About the Author

David Alegeta

David is a long-distance hiker, a writer and an editor whose favorite topics include backpacking and trail running. He is an adventure athlete who covered over 20,000 miles. He frequently speaks to groups about the benefits of proper footwear and has written numerous articles on this subject. He lives in Dallas, Texas with his family.