ShoeGeometry

Altra Experience Flow 3 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 boneAltra Experience Flow 3: heel 32 mm, forefoot 28 mm (drop 4 mm); toe rocker 33 % of length, radius 42 % of length; heel bevel 11 % of length, 21 mm high at the back, ending about under the heel bone.Altra Experience Flow 3: 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
  • Altra Experience Flow 332/28 mm · toe rocker 33 % · heel bevel 11 %
  • 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 Azura33 vs 33.7 % toe rocker; 37.8 vs 45.4 mm toe tip
More cushioning under the heelSaucony Endorphin Azura32 vs 40 mm heel stack
More under the forefootSaucony Endorphin Azura28 vs 32 mm forefoot stack
A lower dropAltra Experience Flow 34 vs 8 mm drop
A stiffer, snappier forefootSaucony Endorphin Azura3 vs 45 /100 stiffness
A firmer, more stable feelSaucony Endorphin Azura39 vs 76 /100 firmness
A wider base under the forefootSaucony Endorphin Azura118.1 vs 123.4 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.

MetricAltra Experience Flow 3
Daily trainer · Road
Saucony Endorphin Azura
Daily trainer · Road
Heel-to-toe drop4 mmStated8 mmStated
Heel stack32 mmStated40 mmStated
Forefoot stack28 mmStated32 mmStated
Weight255 gStated241 gStated
Toe rocker33 %est.34 %est.
Rocker radius42 %est.36 %est.
Rocker rise angle27 degest.32 degest.
Rocker angle at toe54 degest.64 degest.
Toe tip over ground38 mmest.45 mm*est.
Visible rocker lift onset77.7 %est.77.3 %est.
Toe spring (relative)16.7 %est.21.1 %est.
Heel bevel length11.1 %est.11.8 %*est.
Heel bevel height21 mmest.29 mm*est.
Midsole width (forefoot)118.1 mmMeasured123.4 mmMeasured
Midsole width (heel)94.1 mmMeasured91.6 mmMeasured
Toe box shape81 %est.—
Interior forefoot width99.3 mmMeasured94 mmMeasured
Toebox width79.3 mmMeasured72.2 mmMeasured
Longitudinal stiffness3Derived45Derived
Midsole firmness39Derived76Derived
PlateNo plateNo plate
Primary foamAltra EGO P35 (compression-moulded OBC blend)PWRRUN PB
List price$145$150

Key differences

  • Altra Experience Flow 3's heel-to-toe drop is 4 mm, 4 mm lower than Saucony Endorphin Azura's 8 mm.
  • Altra Experience Flow 3's heel stack is 32 mm, 8 mm thinner than Saucony Endorphin Azura's 40 mm.
  • Altra Experience Flow 3's forefoot stack is 28 mm, 4 mm thinner than Saucony Endorphin Azura's 32 mm.
  • Altra Experience Flow 3's weight is 255 g, 14 g heavier than Saucony Endorphin Azura's 241 g.
  • Toe rocker is about the same: 33 % of length for Altra Experience Flow 3, 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:

Altra Experience Flow 3

Saucony Endorphin Azura

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Altra Experience Flow 3 details · Saucony Endorphin Azura details · Add more shoes