The Karhu Fusion 5.0 Has Arrived at Kinisi Run Hub⚡
We're excited to announce that the all-new Karhu Fusion 5.0 launches today and is available at Kinisi Run Hub!
Long regarded as one of Karhu's most versatile trainers, the Fusion has built a loyal following thanks to its unique combination of cushioning, responsiveness and smooth transitions. For version 5.0, Karhu has delivered one of the biggest updates in the model's history, introducing an all-new upper and an innovative dual-density midsole designed to make the shoe lighter, faster and more energetic than ever.
Whether you're heading out for easy miles, picking up the pace for a tempo run or looking for one shoe to do it all, the Fusion 5.0 is ready to deliver.

Introducing the Karhu Fusion 5.0
The Karhu Fusion 5.0 is a neutral, high-performance daily trainer built for runners who want versatility and efficiency. Designed using insights from Karhu's database of over four million 3D foot scans, the shoe aims to provide a comfortable fit while delivering a smooth and propulsive ride.
The latest version introduces a completely reworked platform, combining new foam technologies with Karhu's signature Fulcrum geometry to create a shoe that feels lighter and more responsive than previous generations.

What's New in the Fusion 5.0?
- Dual-Layer AeroFoam Midsole - one of the biggest updates is the introduction of a dual-density cushioning system. The upper layer features AeroFoam Nova, an ATPU-based foam that delivers a noticeably more energetic and springy feel, while the lower layer uses AeroFoam Nitro to provide cushioning, stability and durability. Together, they create a ride that is both lively and controlled.
- Refined Fulcrum Technology - Karhu's signature Fulcrum remains at the heart of the shoe. This internal plastic element works alongside the rocker geometry to promote smooth transitions and efficient forward momentum. The result is a shoe that encourages you to keep moving and feels particularly comfortable when cruising at tempo pace.
- Completely Redesigned Upper - The Fusion 5.0 receives an entirely new upper construction. Built for improved comfort and breathability, the updated design offers a more premium feel while providing a secure and accommodating fit. The new upper contributes to a lighter overall package and helps the shoe disappear on foot.
- Lighter, Faster and More Versatile - Compared with previous versions, the Fusion 5.0 has been engineered to feel quicker and more agile while retaining the comfort that Fusion fans have come to love. It's a shoe capable of handling easy runs, daily training, tempo sessions, progression runs, long runs and even racing making it the most versatile shoe in Karhu's range.

Who the Fusion 5.0 is For
The Fusion 5.0 is ideal for runners looking for:
- A versatile neutral trainer
- Smooth and efficient transitions
- Responsive cushioning without a carbon plate
- A shoe capable of handling multiple paces
- A comfortable and secure fit
It's particularly appealing to runners who enjoy shoes like the New Balance Rebel or Saucony Endorphin Azura but want something a little different.

Why We're Excited About the Karhu Fusion 5.0
At Kinisi Run Hub, we've always loved the Fusion for its ability to blend comfort with responsiveness. The 5.0 takes that formula to another level.
The addition of the new AeroFoam Nova, paired with the proven AeroFoam Nitro platform and signature Fulcrum technology, gives the shoe a fresh identity while retaining the unique Karhu ride that runners know and love.
For anyone looking for a versatile trainer that can comfortably cover everything from easy miles to faster workouts, the Fusion 5.0 might just be Karhu's most exciting shoe yet. Here are the specs:
- Shoe Type: Neutral
- Use: Everyday Running and Speed Running
- Stack Height: 33mm / 27mm
- Drop: 6mm
- Weight: 240g (Women's) / 280g (Men's)
- Price: £145

Try the Karhu Fusion 5.0 at Kinisi Run Hub
The Karhu Fusion 5.0 launches today and is available in-store and online at Kinisi Run Hub.
As always, we recommend pairing any new shoe with our expert gait analysis and fitting service to help you find the right shoe for your running style and goals.
Pop in and discover the next evolution of one of Karhu's most popular trainers!

