Price: $ MSRP: $

A lightweight and ready to go fast, the Karhu Flow Light Fulcrum is an efficient-riding performance shoe with minimal cushioning and a firm ride.



Lace up the Karhu Flow Light Fulcrum and say hello to performance. Featuring Fulcrum technology to promote an efficient transition through toe-off, this lightweight and responsive shoe is ready for fast running and racing.

Model Number:

Weight: 6.8 oz (size 8)

Stack Height: Heel (18mm), Forefoot (13mm)

Available Widths: B=Medium

How It Fits (based on width B)

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


The Flow Light Fulcrum is a moderate featured, minimum neutral shoe designed for racing and speedwork. 


  • CMEVA is compression molded EVA which is an industry standard midsole material designed to offer durable cushioning.


  • Fulcrum is a high durometer EVA wedge located from the heel to the midfoot. It is engineered to promote an efficient heel to toe transition by converting heel strike energy into forward momentum.


  • Open Mesh is utilized throughout the entire upper and provides breathability.
  • Welded Overlays around the midfoot support the contours of the foot for a snug and supportive fit.
  • Reflective Details increase visibility in low-light conditions.
  • Traditional Sockliner provides contoured support and cushioning.
  • Strobel Last with the upper stitched to a full length EVA board for a comfortable underfoot feel.


  • Wearable EVA Outsole with Compression Molded Rubber in key areas for optimal durability and shock absorption.

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 love the Karhu Flow3 Lights. I've been racing in these shoes for the past 2 years. I joke that I'm unable to run slow in these shoes. I do most of my training in the Trainer style of this shoe and these are a half ounce lighter. They definitely don't lose any performance in this half ounce. They're very breathable which is great for racing in Texas and I've never had a problem getting blisters (even with wet feet) in these shoes. I'm definitely keeping these as my go to racing shoe.
From: Meredith, Austin, TX, USA. 2/12/14