ShoeGeometry

Brooks Ghost 18 vs Saucony Endorphin Azura

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

heel boneBrooks Ghost 18: heel 36 mm, forefoot 26 mm (drop 10 mm); toe rocker 33 % of length, radius 41 % of length; heel bevel 6 % of length, 14 mm high at the back, ending behind the heel bone (only the back edge is rounded).Brooks Ghost 18: toe rocker 33 % of lengthSaucony Endorphin Azura: heel 40 mm, forefoot 32 mm (drop 8 mm); toe rocker 34 % of length, radius 36 % of length; heel bevel 12 % of length, 29 mm high at the back, ending about under the heel bone.Saucony Endorphin Azura: toe rocker 34 % of length
  • Brooks Ghost 1836/26 mm · toe rocker 33 % · heel bevel 6 %
  • Saucony Endorphin Azura40/32 mm · toe rocker 34 % · heel bevel 12 %
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-offSaucony Endorphin Azura32.5 vs 33.7 % toe rocker; 36.6 vs 45.4 mm toe tip
More cushioning under the heelSaucony Endorphin Azura36 vs 40 mm heel stack
More under the forefootSaucony Endorphin Azura26 vs 32 mm forefoot stack
A lower dropSaucony Endorphin Azura10 vs 8 mm drop
A stiffer, snappier forefootSaucony Endorphin Azura22 vs 45 /100 stiffness
A firmer, more stable feelAbout the same77 vs 76 /100 firmness
A wider base under the forefootSaucony Endorphin Azura115.7 vs 123.4 mm forefoot base
Less weightSaucony Endorphin Azura289 vs 241 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.

MetricBrooks Ghost 18
Daily trainer · Road
Saucony Endorphin Azura
Daily trainer · Road
Heel-to-toe drop10 mmStated8 mmStated
Heel stack36 mmStated40 mmStated
Forefoot stack26 mmStated32 mmStated
Weight289 gStated241 gStated
Toe rocker33 %est.34 %est.
Rocker radius41 %est.36 %est.
Rocker rise angle28 degest.32 degest.
Rocker angle at toe60 degest.64 degest.
Toe tip over ground37 mm*est.45 mm*est.
Visible rocker lift onset79.1 %est.77.3 %est.
Toe spring (relative)17.4 %est.21.1 %est.
Heel bevel length6.1 %*est.11.8 %*est.
Heel bevel height14 mm*est.29 mm*est.
Midsole width (forefoot)115.7 mmMeasured123.4 mmMeasured
Midsole width (heel)95.9 mmMeasured91.6 mmMeasured
Interior forefoot width96 mmMeasured94 mmMeasured
Toebox width70.6 mmMeasured72.2 mmMeasured
Longitudinal stiffness22Derived45Derived
Midsole firmness77Derived76Derived
PlateNo plateNo plate
Primary foamDNA Loft v3PWRRUN PB
List price$150$150

Key differences

  • Brooks Ghost 18's heel-to-toe drop is 10 mm, 2 mm higher than Saucony Endorphin Azura's 8 mm.
  • Brooks Ghost 18's heel stack is 36 mm, 4 mm thinner than Saucony Endorphin Azura's 40 mm.
  • Brooks Ghost 18's forefoot stack is 26 mm, 6 mm thinner than Saucony Endorphin Azura's 32 mm.
  • Brooks Ghost 18's weight is 289 g, 48 g heavier than Saucony Endorphin Azura's 241 g.
  • Toe rocker is about the same: 33 % of length for Brooks Ghost 18, 34 % of length for Saucony Endorphin Azura.

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 Ghost 18

Saucony Endorphin Azura

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Brooks Ghost 18 details · Saucony Endorphin Azura details · Add more shoes