KARHU Synchron

Men's Running Shoes View Women's
original price $160 sale/discounted price $120
Star Rating is 4.3 / 5
6 Verified Reviews
Raspberry / Strawberry #1127896-RSRW-ABIW
Happy Fit Guarantee
Fleet Feet Reviewed
Read our review of the KARHU Synchron


Packing the softest ride in Karhu’s lineup, the new men'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 men'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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Star Rating is 4.3 / 5
Based on 6 Verified Reviews
Star Rating is 3 / 5

Comfortable But

TP 10 months ago Verified Purchase

This is my third pair and I love the shoe and feel but the bottoms on all three cracked all the way across after a couple of months.

Star Rating is 4 / 5


Steve E 1 year ago Verified Purchase

Shoes are comfortable and very functional. Laces come undone sometimes.

Star Rating is 5 / 5

Karhu Synchron 2021

Shannon J 2 years ago Verified Purchase

This is my second pair of these shoes. The first was the same model only 2020. They are great and I am very happy with these shoes. Excellent padding great for walking on streets sidewalks and the beach. The fit is very good and that's because of the precision work done by the 3-D fitting at Fleet Feet.

Star Rating is 4 / 5

KARHU Synchron Ortix 2021

Matthew K 2 years ago Verified Purchase

This is my fourth pair of KARHU Synchron Ortix very comfortable and would give them a five except that the bottoms tend to wear fast otherwise they are a great shoe