Sale: $ MSRP: $

The Saucony Fastwitch 6 is a racing flat designed for a mild overpronated foot motion, ideal for speedwork and long distance races.


Important Shipping Note: U.S. sales only.


The Saucony Fastwitch 6 gives you the performance of a racing shoe, while retaining a bit of support for the overpronators among us. A lightweight design means that there is little holding you back from your next PR, while a traditional medial post provides mild stability. A carbon rubber outsole offers durability and unrelenting grip on the road, and a breathable mesh upper keeps your feet cool. Lace up the Fastwitch 6 for speedwork or race day. 

Model Number:

View all colors

Weight: 7.5 oz (size 9)

Stack Height: Heel (18mm), Forefoot (14mm)

Available Widths: D=Medium

How It Fits (based on width D) 

  • Sizing: Standard running shoe length
  • Heel:  Narrow to medium
  • Mid-foot: Medium volume
  • Forefoot: Medium
  • Toe-Box Height: Low
  • Arch Structure: Medium
  • Shoe Shape: Semi-Curved


  • Dual Density SSL EVA uses high density EVA in the midfoot to control overpronation, and a SSL (Saucony Super Lite) midsole material throughout the remainder of the shoe for lightweight comfort, rebound and durability.
  • Midfoot Support Bridge is a thermoplastic unit that extends from the heel through the midfoot for increased torsional rigidity.


  • XT-900 is a carbon rubber material that offers durable traction.


  • Ultralite Mesh covers the entire upper and is a breathable ultra lightweight fabric.
  • Flex Film Overlays are made of a thin film that is welded to the upper for a snug, secure fit.
  • Premium Sockliner is a breathable, moisture wicking, anti-odor and anti-microbial Ortholite insole that provides improved step-in comfort with rebound properties.
  • Strobel Last with the upper stitched to full length HRC Strobel Board, for responsive, enhanced cushioning and a soft underfoot feel.

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 really liked these shoes. I found that I had to order a 1/2 size larger than usual. Problem: the black mesh on the sides degrade and the shoe then essentially falls apart. These shoes never last long for me. I tried 3 pair. All the same result. Your mileage may vary.
From: Anonymous. November 10th 2014

Comments: I love the shoe. Great road racer. Supper light, comfortable, with reasonable cushioning and Support. However, I have used 4 different pairs of this shoe and all have shown tearing on the lateral side under the logo. Not happy as they each have only had 100 KMs / 60 miles or less on them. I like the ride and feel but wish the upper was more like the ASICS Gel DS Racer 10. Given that they only last for that low a mileage (and I run up to 80 KM a week) I am now considering to Switch to ASICS Gel DS Racer.
From: Saul, Singapore.  August 3rd 2014

Comments: Great road racer. Supper light, comfortable, with reasonable cushioning and support while maintaining a low hell for speed. The only complaint I have are the holes in the tread. There are several small holes where water can get through the site and soak the bottom of your for if you step in even a puddle.
From: Brian, McKinleyville, Ca, USA. June 11th 2014

Comments: I really like these shoes and have had 4 or 5 of them (3 were the last version). The only problem with them is the construction on the upper, which in all the shoes has ripped in the same areas others have mentioned.
From: Pete, WA, USA. April 8th 2014

Comments: I have used 2 different pairs of this shoe and both have shown tearing on the lateral side under the logo. Not happy as they each have only had 50 miles on them. I like the ride and feel but wish the upper was more like the A5. Sometimes you win and sometimes you loose. I lost.
From: Anonymous

Comments: Nice light show with decent cushion. Runs a bit small, but 1 full size up fit me well. The open knit upper is more flexible and forgiving than the fine nylon on my Kinvara 2s. The Fastwitch feels less cramped and restricted. The Kinvaras ripped after only about 100 miles right at the flex point behind the toe. I don't expect this problem with the open weave on the Fastwitches. I will be using this for non-trail training and racing. I am a mild pronator when standing/walking but running I become more neutral. My feet still feel good in these after 7-8 mile runs.
From: Mike, Bristol NH

Comments: Really nice tempo and marathon shoe. Pops off the ground quite nicely with an equally firm, responsive and flexible feeling. Better fit, too, than predecessor; Fastwitch 5. Flex film contributes to an airy, more breathable and lighter upper. I sized up 1/2 size.
From: Darren, Colorado