ShoeGeometry

Brooks Glycerin 23 vs Nike Pegasus Premium

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

heel boneBrooks Glycerin 23: heel 38 mm, forefoot 30 mm (drop 8 mm); toe rocker 33 % of length, radius 45 % of length; heel bevel 10 % of length, 20 mm high at the back, ending about under the heel bone.Brooks Glycerin 23: toe rocker 33 % of lengthNike Pegasus Premium: heel 45 mm, forefoot 35 mm (drop 10 mm); toe rocker 36 % of length, radius 46 % of length; heel bevel 8 % of length, 18 mm high at the back, ending behind the heel bone (only the back edge is rounded).Nike Pegasus Premium: toe rocker 36 % of length
  • Brooks Glycerin 2338/30 mm · toe rocker 33 % · heel bevel 10 %
  • Nike Pegasus Premium45/35 mm · toe rocker 36 % · heel bevel 8 %
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 same32.9 vs 35.6 % toe rocker
More cushioning under the heelNike Pegasus Premium38 vs 45 mm heel stack
More under the forefootNike Pegasus Premium30 vs 35 mm forefoot stack
A lower dropBrooks Glycerin 238 vs 10 mm drop
A stiffer, snappier forefootNike Pegasus Premium38 vs 70 /100 stiffness
A firmer, more stable feelNike Pegasus Premium33 vs 63 /100 firmness
A wider base under the forefootBrooks Glycerin 23120.4 vs 108.6 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 Glycerin 23
Max cushion · Road
Nike Pegasus Premium
Max cushion · Road
Heel-to-toe drop8 mmStated10 mmStated
Heel stack38 mmStated45 mmStated
Forefoot stack30 mmStated35 mmStated
Weight301 gStated325 gStated
Toe rocker33 %est.36 %est.
Rocker radius45 %est.46 %est.
Rocker rise angle28 degest.26 degest.
Rocker angle at toe58 degest.57 degest.
Toe tip over ground37 mmest.36 mm*est.
Visible rocker lift onset78.2 %est.74.5 %est.
Toe spring (relative)17.5 %est.17.4 %est.
Heel bevel length10.3 %est.8.3 %est.
Heel bevel height20 mm*est.18 mm*est.
Midsole width (forefoot)120.4 mmMeasured108.6 mmMeasured
Midsole width (heel)98.6 mmMeasured90.3 mmMeasured
Toe box shape75 %*est.68 %*est.
Interior forefoot width96.1 mmMeasured91.3 mmMeasured
Toebox width73.9 mmMeasured70.3 mmMeasured
Longitudinal stiffness38Derived70Derived
Midsole firmness33Derived63Derived
PlateNo plateNo plate
Primary foamDNA TunedZoomX + ReactX, sculpted Air Zoom unit
List price$175$220

Key differences

  • Brooks Glycerin 23's heel-to-toe drop is 8 mm, 2 mm lower than Nike Pegasus Premium's 10 mm.
  • Brooks Glycerin 23's heel stack is 38 mm, 7 mm thinner than Nike Pegasus Premium's 45 mm.
  • Brooks Glycerin 23's forefoot stack is 30 mm, 5 mm thinner than Nike Pegasus Premium's 35 mm.
  • Brooks Glycerin 23's weight is 301 g, 24 g lighter than Nike Pegasus Premium's 325 g.
  • Toe rocker is about the same: 33 % of length for Brooks Glycerin 23, 36 % of length for Nike Pegasus Premium.

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 Glycerin 23

Nike Pegasus Premium

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Brooks Glycerin 23 details · Nike Pegasus Premium details · Add more shoes