ShoeGeometry

Brooks Adrenaline GTS 25 vs Saucony Guide 19

Two popular shoes in the same category, compared on measured geometry. Each cell carries a provenance badge; open a shoe for sources.

heel boneBrooks Adrenaline GTS 25: heel 37 mm, forefoot 27 mm (drop 10 mm); toe rocker 32 % of length, radius 36 % of length; heel bevel 9 % of length, 14 mm high at the back, ending behind the heel bone (only the back edge is rounded).Brooks Adrenaline GTS 25: toe rocker 32 % of lengthSaucony Guide 19: heel 35 mm, forefoot 29 mm (drop 6 mm); toe rocker 33 % of length, radius 45 % of length; heel bevel 13 % of length, 27 mm high at the back, ending about under the heel bone.Saucony Guide 19: toe rocker 33 % of length
  • Brooks Adrenaline GTS 2537/27 mm · toe rocker 32 % · heel bevel 9 %
  • Saucony Guide 1935/29 mm · toe rocker 33 % · heel bevel 13 %
Illustrative profiles, not photographs: drawn from published stack heights and photo estimates of the unloaded shoes on a common length (300 mm), heels aligned, toe to the left; dots mark where each toe rocker starts; the dotted vertical line is under the heel bone (12 % of length), so a heel curve reaching past it is a bevel in front of the heel bone. Dotted lines use typical values where a shoe has no measurement. Exact values are in the table below.

Which suits you

If you wantPickBecause
A smoother roll at toe-offAbout the same32 vs 33.4 % toe rocker
More cushioning under the heelBrooks Adrenaline GTS 2537 vs 35 mm heel stack
More under the forefootSaucony Guide 1927 vs 29 mm forefoot stack
A lower dropSaucony Guide 1910 vs 6 mm drop
A stiffer, snappier forefootBrooks Adrenaline GTS 2533 vs 16 /100 stiffness
A firmer, more stable feelBrooks Adrenaline GTS 2554 vs 38 /100 firmness
A wider base under the forefootAbout the same117.7 vs 120 mm forefoot base

From the values below, with differences inside measurement noise shown as about the same. This describes the shoes, not what is right for your feet; comfort in the first few runs decides.

MetricBrooks Adrenaline GTS 25
Stability · Road
Saucony Guide 19
Stability · Road
Heel-to-toe drop10 mmStated6 mmStated
Heel stack37 mmStated35 mmStated
Forefoot stack27 mmStated29 mmStated
Weight301 gStated275 gStated
Toe rocker32 %est.33 %est.
Rocker radius36 %est.45 %est.
Rocker rise angle31 degest.29 degest.
Rocker angle at toe60 degest.65 degest.
Toe tip over ground39 mm*est.35 mmest.
Visible rocker lift onset76.5 %est.77.8 %est.
Toe spring (relative)19.3 %est.18.4 %est.
Heel bevel length9 %*est.13 %*est.
Heel bevel height14 mm*est.27 mm*est.
Midsole width (forefoot)117.7 mmMeasured120 mmMeasured
Midsole width (heel)100.7 mmMeasured104.2 mmMeasured
Toe box shape77 %*est.77 %*est.
Interior forefoot width96 mmMeasured96.2 mmMeasured
Toebox width72.8 mmMeasured72.8 mmMeasured
Longitudinal stiffness33Derived16Derived
Midsole firmness54Derived38Derived
PlateNo plateNo plate
Primary foamDNA Loft v3PWRRUN
List price$145$150

Key differences

  • Brooks Adrenaline GTS 25's heel-to-toe drop is 10 mm, 4 mm higher than Saucony Guide 19's 6 mm.
  • Brooks Adrenaline GTS 25's heel stack is 37 mm, 2 mm thicker than Saucony Guide 19's 35 mm.
  • Brooks Adrenaline GTS 25's forefoot stack is 27 mm, 2 mm thinner than Saucony Guide 19's 29 mm.
  • Brooks Adrenaline GTS 25's weight is 301 g, 26 g heavier than Saucony Guide 19's 275 g.
  • Toe rocker is about the same: 32 % of length for Brooks Adrenaline GTS 25, 33 % of length for Saucony Guide 19.

Read more about both shoes

We measure the shape. For how they feel over many miles, and for lab tests of cushioning, grip and fit:

Brooks Adrenaline GTS 25

Saucony Guide 19

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Brooks Adrenaline GTS 25 details · Saucony Guide 19 details · Add more shoes