Women's Shoes Neutral Running Karhu

Women's KARHU Synchron


Packing the softest ride in Karhu’s lineup, the new women's Synchron delivers easy steps mile after mile.

Karhu achieved the soft feel by using its AeroFoam Nova midsole. The premium cushioning eases your landings and rolls you through a smooth transition that keeps you moving forward.

Designers updated the internal Fulcrum unit to make the new Synchron more flexible than before, but it still provides a stable ride.

Karhu topped the Synchron with a new mesh upper, too. The adjusted upper fits a wider variety of foot shapes and flexes easily for a more natural feel.

When you need premium softness that can stand up to the miles, the new women's Karhu Synchron has you covered.

Tech specs

Karhu Synchron


10.5 oz (W), 12.7 oz (M)


8 mm

Stack height (heel/toe)





Everyday training



What’s New

Karhu tweaked the upper for a more natural feel that works for a wide variety of foot shapes, and they updated the internal Fulcrum unit for a more flexible ride.

Who It’s Best For

The Synchron is best for neutral runners who want a high-cushion, durable ride.

Why You’ll Love It

The AeroFoam Nova midsole delivers soft landings and smooth transitions, and Karhu’s data-driven approach to fit makes it work for lots of different foot shapes and sizes.

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Reviews (4)

5 out of 5 stars.

5/5 on 4 total reviews

Tara Verified Buyer
5 out of 5 stars.

These shoes are very comfortable. Lots of room in the toe box. A little wide but worked out good for me because I have a high volume food. And I love the extra pair of shoe strings

AJ Verified Buyer
5 out of 5 stars.
Like walking on a cloud,

These are incredible, both supportive and comfortable. Like walking on a cloud.

Lisa Verified Buyer
5 out of 5 stars.
Great sneakers

Been looking for a better pair of sneakers, since my feet have been hurting in my cheap pair. A friend recommended Fleetfeet store, so I went to my local store. So knowable in trying to find a proper pair of sneakers. Unfortunately couldn’t find a pair I liked in my size in the store. So I went online and ordered the pair I tried on in the store. At first the high price ($160)took me by surprise, but everyone told me that’s what you pay for good sneakers. Will definitely go back to Fleetfeet when I need another pair of sneakers

Mary Verified Buyer
5 out of 5 stars.
Karhu Synchron Ortix

These are the best shoes I’ve ever worn. The cushion and stability is absolutely fantastic. I can sleep in them. I walk 7 days/wk minimum 10 mi/day.

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