The Revamped Saucony Guide ISO Has a Custom-Fit Feel


Saucony Guide ISO Gallery

Matt Rainey

Price: $120
Type: Road
Weight:
10.5 oz (M), 8.9 oz (W)
The Right Shoe For: Overpronators who need just a little motion control

The revamped Guide maintains the solid support runners liked in its predecessor, but has an entirely new upper for better fit and comfort. The ISOFit design is individual wings on the upper that connect into the laces, so the upper flexes with each stride, making the shoe feel custom-made to each runner.

And most testers thought Saucony delivered. One long-time Guide devotee said the moderate stability shoe was an improvement across the board from the previous Guide 10, praising the improved comfort, firmer cushioning, and wider toe box.

“My favorite part of the shoe is the upper closure system,” one tester said of the new ISOFit. “It is very simple, modern, and comfortable. It’s minimal and very flexible to fit every curve and movement of my foot.”

However, many narrow-footed testers weren’t thrilled with the new ISO-style lacing. Some couldn’t get a tight enough fit from the shoe, no matter how taut they pulled the laces, or found that the wider toe box felt loose and sloppy. So if you have a wider foot or like a little wiggle room, the Guide ISO will be right up your alley. Otherwise, a narrower model might be needed.

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Midsole

Saucony geared the Guide ISO towards mild to moderate overpronators. Hence the name, the shoe “guides” the foot to deliver better motion control, rather than muscling runners out of their natural stride entirely. Two features come together to make this magic happen: the first is the Guide ISO’s supple midsole foam that provides responsive cushioning. While the ISO did lose some of the plushness of its predecessor, testers still felt there was ample padding, and some even preferred the shoe’s firmer feel.

Ingredient number two is a supportive, yet lightweight, medial post for minimizing pronation. Together, these features gave testers just enough support, without being overbearing or clunky. One tester said it best when he remarked, “I liked that this shoe is durable and provides support, while also feeling light and comfortable.”

Saucony Guide ISO Gallery

Matt Rainey

Outsole

The Guide ISO’s zig-zag outsole isn’t just for looks. Those rubber ridges help disperse the impact forces that come from the heavy pounding of tired legs, so you get more energy back with each stride and absorb less of the blow. Plus, the grooves beef up traction for those runs on slick, wet roads—which you’ll love if you’re caught in a surprise summer downpour. According to one of our testers, “It holds up with my 45-miles-a-week training routine, and really keeps my feet underneath me on those occasional rainy road days.”

Upper

Saucony bonds a lightweight plastic film to the Guide ISO’s upper. Dubbed FlexFilm, the material boosts the support of the shoe’s mesh construction, without tacking on heavy, stiff overlays. Overall, this improves the fit of the shoe, yet delivers runners a flexible and breathable shoe.

Saucony Guide ISO Gallery

Matt Rainey

True to its name, the shoe’s ISOFit lacing was a big bonus for many testers. Those who liked the ability to slip their kicks on and off swiftly were fans of the shoe’s quick-pull system, and thought it made the shoe more comfortable on foot than previous iterations of the Guide. However, testers with narrow feet just couldn’t seem to get the lacing snug enough, and some found that they felt some irritation when the shoe was laced at its tightest.

All the Stats You Need!

Men’s

  • Weight: Heavy | 10.5 oz
  • Heel-To-Toe-Drop: Moderate | 9.1 mm
  • Heel Height: Moderate | 32.3 mm
  • Heel Cushioning: Firm
  • Forefoot Height: Moderate | 23.2 mm
  • Forefoot Cushioning: Soft
  • Flexibility: Stiff
  • Stability Features: Most
  • Energy Return: Most

    Women’s

    • Weight: Heavy | 8.9 oz
    • Heel-To-Toe-Drop: Low | 7.7 mm
    • Heel Height: Moderate | 31.6 mm
    • Heel Cushioning: Moderate
    • Forefoot Height: Low | 23.9 mm
    • Forefoot Cushioning: Very Soft
    • Flexibility: Very Stiff
    • Stability Features: Most
    • Energy Return: Most

      We put each shoe through real-world usage and a battery of mechanical tests in our lab to provide you with objective—and exclusive—data. In addition to measuring a shoe’s weight, we measure sole thickness (everything that sits between your foot and the road), how well the foam cushions your stride, and the flexibility of the forefoot. All this is taken into account in our reviews of each shoe.

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