Men's Shoes Neutral Running Karhu

KARHU Synchron 2020

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Men's | KARHU Synchron
Men's / Women's
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Customer Reviews
4.8 out of 5 stars.
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The Karhu Synchron 2020 is the most luxurious yet.

Cushioned by an AeroFoam Nova midsole, the Synchron delivers a plusher ride than traditional EVA foam compounds. Designers paired the AeroFoam with Karhu’s signature Fulcrum technology, which provides smooth transition and helps runners keep their momentum moving forward.

Karhu built the Synchron 2020 with the help of more than 100,000 3D foot scans taken through Fleet Feet’s fit id outfitting process. The scans help ensure the best possible fit, so you can run in comfort.

Tech specs

Karhu Synchron 2020




9.9 oz (women’s); 11.6 oz (men’s0


8 mm


Everyday trainer




Road, track

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Reviews (9)

4.8 out of 5 stars.

4.8/5 on 9 total reviews

Marc Verified Buyer
3 out of 5 stars.
KARHU Synchron 2020

Way too narrow in the toe box.

James Verified Buyer
5 out of 5 stars.
I like these shoes

I remember Karhu shoes from old runner's world shoe reviews many years ago. These were a very good deal from Fleet Feet so I finally decided to try them and am very impressed by the fit and feel. They have good cushion while feeling faster than the Hoka's that I have in strong daily rotation. Not as cushioned as the Bondi, but the newer model Clifton compares well and gives my feet some change a couple of days a week. They feel better than the new Clifton, but thay may be because they are my newest pair of shoes. Still, I was disappointed that the Clifton's are less cushioned than past models and mainly need a pair like the Karhu's to avoid Hoka fatigue and not rely so mucy on the a little too lethargic Bondis to build my speed back. I would buy Karhu's again and always look for a good price.

Brandon Verified Buyer
5 out of 5 stars.
Best shoes ever

I was a hoka guy before I tried in these Kahru's. These are the best shoes I've ever put on. Highly recommend!

Zachary Verified Buyer
5 out of 5 stars.
Karhu synchron

Very comfortable shoe. Keep my feet comfortable all day at work

Glen Verified Buyer
5 out of 5 stars.
Excellent Customer Service

Excellent Customer Service

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