ShoeGeometry

Adidas Adizero Boston 13 vs Saucony Endorphin Speed 5

Two current shoes in the same category with similar stack height and drop, compared on the values in the database. Each cell carries a provenance badge; open a shoe for sources.

heel boneAdidas Adizero Boston 13: heel 36 mm, forefoot 30 mm (drop 6 mm); rocker apex 65 % of length, radius 41 % of length; heel bevel 5 % of length, 11 mm high at the back, ending behind the heel bone (only the back edge is rounded).Adidas Adizero Boston 13: rocker apex at 65 % of lengthSaucony Endorphin Speed 5: heel 36 mm, forefoot 28 mm (drop 8 mm); rocker apex 64 % of length, radius 38 % of length; heel bevel 12 % of length, 21 mm high at the back, ending about under the heel bone.Saucony Endorphin Speed 5: rocker apex at 64 % of length
  • Adidas Adizero Boston 1336/30 mm · apex 65 %
  • Saucony Endorphin Speed 536/28 mm · apex 64 %
Midsoles drawn from measured values on a common length (300 mm), heels aligned, toe to the left; dots mark the rocker apex; 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.
MetricAdidas Adizero Boston 13
Tempo · Road
Saucony Endorphin Speed 5
Tempo · Road
Heel-to-toe drop7 mmStated8 mmStated
Heel stack36 mmStated36 mmStated
Forefoot stack30 mmStated28 mmStated
Weight255 gStated237 gStated
Rocker apex65.2 %est.63.8 %est.
Rocker radius41 %est.38 %est.
Rocker rise angle28 degest.29 degest.
Toe tip over ground44 mmest.40 mmest.
Rocker angle at toe56 degest.59 degest.
Visible rocker lift onset76.6 %est.76.1 %est.
Toe spring (relative)18.5 %est.18.6 %est.
Heel bevel length5.4 %est.11.6 %est.
Heel bevel height11 mmest.21 mmest.
Midsole width (forefoot)121 mmMeasured118.1 mmMeasured
Midsole width (heel)83.8 mmMeasured95 mmMeasured
Toe box shape—72 %est.
Interior forefoot width97.3 mmMeasured93.8 mmMeasured
Toebox width70.6 mmMeasured72.9 mmMeasured
Longitudinal stiffness39Derived26Derived
Midsole firmness77Derived93Derived
PlatePlate unknownNylon plate
Primary foamLightstrike ProPWRRUN PB
List price$160$175

Key differences

  • Adidas Adizero Boston 13's heel-to-toe drop is 7 mm, 1 mm lower than Saucony Endorphin Speed 5's 8 mm.
  • Heel stack is about the same: 36 mm for Adidas Adizero Boston 13, 36 mm for Saucony Endorphin Speed 5.
  • Adidas Adizero Boston 13's forefoot stack is 30 mm, 2 mm thicker than Saucony Endorphin Speed 5's 28 mm.
  • Adidas Adizero Boston 13's weight is 255 g, 18 g heavier than Saucony Endorphin Speed 5's 237 g.
  • Rocker onset is about the same: 77 % of length for Adidas Adizero Boston 13, 76 % of length for Saucony Endorphin Speed 5.

Adidas Adizero Boston 13 details · Saucony Endorphin Speed 5 details · Add more shoes