Sale: $ MSRP: $

Bringing efficient motion and nimble performance to the trails, the Karhu Flow3 Trail Fulcrum offers minimal cushioning and a firm ride.



Take on the trails with the efficient transition of the Karhu Flow3 Trail Fulcrum. A lugged outsole is built to handle technical terrain with ease, and Karhu’s Fulcrum technology ensures a smooth ride through toe-off for a nimble run.

Model Number:

Weight: 8.9 oz (size 9)

Stack Height: Heel (21mm), Forefoot (15mm)

Available Widths: D=Medium

How It Fits (based on width B)

  • Sizing: Fits large, purchase size 1/2 smaller than standard running shoe length
  • Heel: Medium
  • Midfoot: Full to medium volume
  • Forefoot: Medium
  • Toe-Box Height: low
  • Arch Structure: Medium
  • Shoe Shape: Semi-Curved


The Flow3 Trail Fulcrum is a moderate featured, minimum neutral shoe designed for training and racing.


  • 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.
  • Side Vamp Wall is water resistant and provides protection from trail elements.
  • 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.


  • Counter Grip Outsole consists of compression molded rubber and provides multidirectional traction on a variety of surfaces.

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: These are currently my favorite running shoes. My weekly mileage is between 40-55 miles and I always look forward to lacing these up. My longest run in them has been a 17-miler at 7:40 pace and I felt like I could keep running longer. Legs felt great the next day following that run. I ordered an extra pair as they feel right when running. Walked in them for about a day or two around the house to get used to the feel as I transitioned from Adidas to Karhu. I also ordered some Women's Karhu shoes for my wife and I hope she likes them as much as I do. Thank you for the outstanding service, Running Warehouse!
From: Tim, Olathe, KS. 3/13/14

Comments: Love these shoes!! The only drawback, I wish the heel counter had zero support. Awesome trail or just casual walks but there was an added plus! After a run (forefoot runner)(2 miles to full marathoner) and a workout(weights) i didn't feel like changing my shoes for a boxing workout, WOW!! best boxing shoes ever. I glad i got 2 pairs. Top service at Bottom prices.
From: Sandoval, Mt. Shasta, CA. U.S.A

Comments: I run about 60 miles per week, half on trail. I got hooked on the Flow3 Trainer and decided to give these a try, and I'm not disappointed at all. The last feels the same as the Trainer, with the fulcrum positioned the same. The tread has been excellent with mud, rock, roots, uphill and downhill. There's no rockplate but I haven't had any issues with beat up feet up to 15 miles. I'm happy, it feels smooth on the trails and durable.
From: Mic, West Hartford, CT