The Newton Aha is a standard, daily running, neutral shoe designed for a neutral foot motion, ideal for runners looking to transition to a forefoot strike.


Important Shipping Note: U.S. sales only.


Every one is familiar with the "Aha" moment when the confusion suddenly becomes clear. This sensation inspired the Newton Aha: the beginner Newton model for neutral runners. With Newton's POP 3 platform featuring the smallest lugs in the Newton line, this shoe is the first step to forefoot striking.

Model Number:

Weight: 8.4 oz (size 9)

Stack Height: 23mm (Heel), 17mm (Forefoot)

Available Widths: D=Medium

How It Fits (based on width D)

  • Sizing: Standard running shoe length
  • Heel: Medium width
  • Midfoot: Medium
  • Forefoot: Medium
  • Toe-Box height: Medium to high
  • Arch Structure: Medium to low
  • Shoe Shape: Semi-Curved



  • Action/Reaction Technology is utilized in the heel and forefoot. These external lugs compress to absorb shock energy, and then release energy during toe-off.
  • P.O.P 3 is an entry-level Newton platform, featuring tapered lugs that recess into polyurethane-filled chambers for a forgiving underfoot feel.
  • EVA midsole offers durable underfoot cushioning.
  • Biomechanical metatarsal sensor plate in the forefoot allows you to feel the ground, offering constant sensory feedback.


  • SHARC Outsole consists of a high abrasion compound that provides increased traction in both dry and wet conditions.


  • Engineered mesh provides lightweight breathability and structure in key areas.
  • Overlays are anatomically placed to provide a secure fit.
  • ETC Sockliner is anti-bacterial for underfoot comfort and a healthy foot environment.
  • Strobel Last with the upper stitched to full length fabric for a comfortable underfoot feel.

Footwear Performance Characteristics

Pronation Control: What's This?

  • Neutral
    • Min
    • Mod
  • Support
    • Min
    • Mod
    • Max
  • Motion Control
    • Mod
    • Max

Heel-Toe Offset (mm): What's This?

  • 0
  • 1-2
  • 3-4
  • 5-6
  • 7-8
  • 9-10
  • 11+

Stack Height:

  • Barefoot
  • Minimal
  • Low
  • Medium
  • High
  • Maximal


  • Road
  • Road-Trail
  • Hard Trail
  • Varied Trail
  • Soft Trail

Shoe Type:

  • Premium
  • Standard
  • Performance
  • Racing

Customer Reviews

Comments: I originally was skeptical about running in Newtons in general. Having been through 4 knee surgeries on both my knees over the past 15 years, I have a hard time finding that shoe that allows me to pack on the miles. I have spent the past few months running in the Kinvara 3 to much success but they wear way too quickly. I am also an under pronator so cushion was key. Having tried neutral cushioned trainer I found that my gait suffered so I became stuck in that area of finding the balance between both worlds. The Newton Aha is it. I am a forefoot runner so they transition has been easy. These shoes are cush without being soft and clunky. They make you want to run fast. Every step has that pop. Not overly aggressive but its there. I feel like I could run all day in these shoes. Like I said I was totally happy with my Kinvaras but these Newtons are the cats meow. The feel just as light on the foot and oh my are they roomy. I have a tween-er width foot. 2E is too much so they f eel sloppy but normal width tends to cinch my foot these are an amazing middle to the two. Like Newton says this is the perfect entry into a Newton. Highly Recommend These Shoes!!!!
From: Marc, Great Hills, MD, USA. December 3rd 2014