ShoeGeometry

ASICS Gel-Kayano 33 vs Brooks Adrenaline GTS 25

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

heel boneASICS Gel-Kayano 33: heel 41 mm, forefoot 33 mm (drop 8 mm); toe rocker 34 % of length, radius 39 % of length; heel bevel 8 % of length, 15 mm high at the back, ending behind the heel bone (only the back edge is rounded).ASICS Gel-Kayano 33: toe rocker 34 % of lengthBrooks 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 length
  • ASICS Gel-Kayano 3341/33 mm · toe rocker 34 % · heel bevel 8 %
  • Brooks Adrenaline GTS 2537/27 mm · toe rocker 32 % · heel bevel 9 %
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 same34.3 vs 32 % toe rocker
More cushioning under the heelASICS Gel-Kayano 3341 vs 37 mm heel stack
More under the forefootASICS Gel-Kayano 3333 vs 27 mm forefoot stack
A lower dropASICS Gel-Kayano 338 vs 10 mm drop
A stiffer, snappier forefootASICS Gel-Kayano 3362 vs 33 /100 stiffness
A firmer, more stable feelAbout the same47 vs 54 /100 firmness
A wider base under the forefootASICS Gel-Kayano 33120.7 vs 117.7 mm forefoot base
Less weightAbout the same298 vs 301 g

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.

MetricASICS Gel-Kayano 33
Stability · Road
Brooks Adrenaline GTS 25
Stability · Road
Heel-to-toe drop8 mmStated10 mmStated
Heel stack41 mmMeasured37 mmStated
Forefoot stack33 mmMeasured27 mmStated
Weight298 gStated301 gStated
Toe rocker34 %est.32 %est.
Rocker radius39 %est.36 %est.
Rocker rise angle30 degest.31 degest.
Rocker angle at toe55 degest.60 degest.
Toe tip over ground44 mm*est.39 mm*est.
Visible rocker lift onset76.6 %est.76.5 %est.
Toe spring (relative)19.7 %est.19.3 %est.
Heel bevel length8.1 %*est.9 %*est.
Heel bevel height15 mmest.14 mm*est.
Midsole width (forefoot)120.7 mmMeasured117.7 mmMeasured
Midsole width (heel)97.1 mmMeasured100.7 mmMeasured
Toe box shape—77 %*est.
Interior forefoot width95.9 mmMeasured96 mmMeasured
Toebox width72.4 mmMeasured72.8 mmMeasured
Longitudinal stiffness62Derived33Derived
Midsole firmness47Derived54Derived
PlateNo plateNo plate
Primary foamFF Blast MaxDNA Loft v3
List price$170$145

Key differences

  • ASICS Gel-Kayano 33's heel-to-toe drop is 8 mm, 2 mm lower than Brooks Adrenaline GTS 25's 10 mm.
  • ASICS Gel-Kayano 33's heel stack is 41 mm, 4 mm thicker than Brooks Adrenaline GTS 25's 37 mm.
  • ASICS Gel-Kayano 33's forefoot stack is 33 mm, 6 mm thicker than Brooks Adrenaline GTS 25's 27 mm.
  • Weight is about the same: 298 g for ASICS Gel-Kayano 33, 301 g for Brooks Adrenaline GTS 25.
  • Toe rocker is about the same: 34 % of length for ASICS Gel-Kayano 33, 32 % of length for Brooks Adrenaline GTS 25.

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:

ASICS Gel-Kayano 33

Brooks Adrenaline GTS 25

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ASICS Gel-Kayano 33 details · Brooks Adrenaline GTS 25 details · Add more shoes