• Discontinued
  • Terrain


    Shoes best for road, track and light gravel. See the best road shoes.


    Shoes best for trail, off road, mountains and other unstable surfaces. See the best trail shoes.

    Good to know

    As long as you stick to the road or path, and if you want just one running shoe, buy a road running shoe.

  • Arch support

    Neutral / cushion / high arch

    Shoes for runners who do not need any additional arch support (Around 50% of runners). Best for people with normal, high or medium high arches. See the best neutral shoes.

    Stability / overpronation / normal arch

    Shoes for runners who need mild to moderate arch support (Around 45% of runners). Best for runners with a low arch. See the best stability shoes.

    Motion control / severe overpronation / flat feet

    Shoes for runners who needs a lot of arch support. Best for runners with flat feet. See the best motion control shoes.

    Good to know

    - Rule of thumb: If in doubt, buy neutral shoes to avoid injuries.
    - More about arch support in this video.
    - Find your arch type by following steps from this video.

  • Use

    Daily running

    Cushioned shoes for your daily easy running. Great comfort. See best shoes for daily running.


    Lightweight shoes good for races, interval training, tempo runs and fartlek. Here are the best competition running shoes.

    Good to know

    If you want just one pair of shoes, buy a shoe for daily running.

  • Price
  • Weight
    Men: 7.5oz
    Women: 6.2oz
  • Heel to toe drop
    Men: 4mm
    Women: 4mm

    The height difference from the heel to the forefoot, also known as heel drop, toe spring, heel to toe spring or simply drop.

    There are many opinions about what a good heel drop is. We do not recommend any in particular. Lean more in this video.

  • Width
    Men: Normal
    Women: Normal
  • Release date
Show more facts

Expert Reviews

Experts are runners, who post reviews at youtube, directly at RunRepeat or at their own websites. Each expert is categorized from level 1 to level 5 based on expertise. See stats on expert reviews and how we calculate scores here.

Are you an expert? Apply to contribute here.

82 / 100 based on 8 expert reviews

  • 87 / 100 | Runblogger | | Level 5 expert

    The Saucony Grid Fastwitch is an incredibly versatile shoe with a generous fit in the forefoot (though you may need to size up to feel it). As a structured flat, it can be used for speedwork, long runs, and just about anything else. I’d feel very comfortable wearing it for a marathon, though personally I’d opt for something a tad lighter and stiffer in a 5K.

  • 86 / 100 | Doctors of Running | | Level 5 expert

    This is a great shoe if you like a really firm ride or like stiff support in a racing shoe-like package with decent room in the toe-box.

  • 85 / 100 | Doctors of Running | | Level 5 expert

    I definitely think there are significant improvements that can be made in the sole to lighten the shoe up and turn it into the racing monster it deserves to be.

  • 70 / 100 | Running Shoes Guru | | Level 4 expert

    Saucony created a more than worthy update to one of their flagship shoes. Runners have loved the Fastwitch for its relatively light and nimble feel with a great deal of stability in a road racer.

  • 88 / 100 | 220 Triathlon | | Level 3 expert

    Its flexibility helps a fluid run gait and it’s very comfortable, with or without socks

  • 79 / 100 | Running Warehouse | | Level 2 expert

    This shoe definitely packs a decent amount of support for a racing shoe. Its great for mild overpronators, though I think moderate overpronators might want to save it for race day only.

Become an expert

  • The upper is updated with the FlexFilm technology and it comes with a dual-density open mesh material for breathability. It stretches well on the feet allowing the toes to move with less of the restriction.
  • Saucony also enhances its upper design with welded overlays. Part of its update is its reduced weight due to the overlay. The inner upper has a super soft ankle collar that adds comfort to the foot. An ortholite insole is also added, and this can be used or removed depending on the runner’s preference.
  • Being a stability racing flat, this shoe also features a plastic heel counter, making the sole firm, responsive, and stiff, which is quite typical in any racing flat shoes.

The Fastwitch 6 runs small compared to the standard fit and sizing. Although it has a wide toe box, it is fit for small to medium mid-foot, heel, and toe areas.

The outsole of the Fastwitch 6 is equipped with the Saucony exclusive XT-900 extensive carbon rubber material. This technology offers exceptional traction and grip and durability even on wet grounds. This rubber material is also strategically placed in the outsole of the Saucony Omni 16 and other popular Saucony shoes for running.

The midsole comes with Dual Density SSL EVA foam for its lightweight cushioning. The midsole is also designed with medial post that provides stability and firmness. The SSL EVA material is also placed in the midsole of the Saucony Fastwitch 8.

From the heel to the mid-foot area, Saucony also placed a Mid-foot support bridge to help in the pronation control, thus making the shoe stiff and rigid for a more responsive and efficient racing flat for over pronators.

The FlexFilm in the upper of the Fastwitch 6 is the overlay added to the Lightweight breathable mesh materials. This is not sewed, which makes the shoe a lot lighter. It is also responsible for the comfort fit the shoe has, keeping the foot snug and comfortable. Premium Sockliner is also added in the inner area for maximum comfort and softness.