ShoeGeometry

Adidas Adizero Boston 13 vs Saucony Kinvara 16

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

heel boneAdidas Adizero Boston 13: heel 37 mm, forefoot 30 mm (drop 7 mm); toe rocker 37 % of length, radius 41 % of length; heel bevel 5 % of length, 13 mm high at the back, ending behind the heel bone (only the back edge is rounded).Adidas Adizero Boston 13: toe rocker 37 % of lengthSaucony Kinvara 16: heel 28 mm, forefoot 24 mm (drop 4 mm); toe rocker 34 % of length, radius 44 % of length; heel bevel 12 % of length, 20 mm high at the back, ending about under the heel bone.Saucony Kinvara 16: toe rocker 34 % of length
  • Adidas Adizero Boston 1337/30 mm · toe rocker 37 % · heel bevel 5 %
  • Saucony Kinvara 1628/24 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-offAdidas Adizero Boston 1336.7 vs 34.1 % toe rocker; 44.7 vs 36.4 mm toe tip
More cushioning under the heelAdidas Adizero Boston 1337 vs 28 mm heel stack
More under the forefootAdidas Adizero Boston 1330 vs 24 mm forefoot stack
A lower dropSaucony Kinvara 167 vs 4 mm drop
A stiffer, snappier forefootAdidas Adizero Boston 1339 vs 21 /100 stiffness
A wider base under the forefootAdidas Adizero Boston 13121 vs 113.8 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.

MetricAdidas Adizero Boston 13
Tempo · Road
Saucony Kinvara 16
Tempo · Road
Heel-to-toe drop7 mmStated4 mmStated
Heel stack37 mmStated28 mmStated
Forefoot stack30 mmStated24 mmStated
Weight255 gStated207 gStated
Toe rocker37 %est.34 %est.
Rocker radius41 %est.44 %est.
Rocker rise angle28 degest.25 degest.
Rocker angle at toe56 degest.57 degest.
Toe tip over ground45 mm*est.36 mm*est.
Visible rocker lift onset76.6 %est.78.9 %est.
Toe spring (relative)18.8 %est.15.8 %est.
Heel bevel length5.4 %*est.12.1 %*est.
Heel bevel height13 mm*est.20 mm*est.
Midsole width (forefoot)121 mmMeasured113.8 mmMeasured
Midsole width (heel)83.8 mmMeasured86.5 mmMeasured
Toe box shape—73 %*est.
Interior forefoot width97.3 mmMeasured94 mmMeasured
Toebox width70.6 mmMeasured70.8 mmMeasured
Longitudinal stiffness39Derived21Derived
Midsole firmness77Derived—
PlatePlate unknownNo plate
Primary foamLightstrike ProPWRRUN
List price$160$130

Key differences

  • Adidas Adizero Boston 13's heel-to-toe drop is 7 mm, 3 mm higher than Saucony Kinvara 16's 4 mm.
  • Adidas Adizero Boston 13's heel stack is 37 mm, 9 mm thicker than Saucony Kinvara 16's 28 mm.
  • Adidas Adizero Boston 13's forefoot stack is 30 mm, 6 mm thicker than Saucony Kinvara 16's 24 mm.
  • Adidas Adizero Boston 13's weight is 255 g, 48 g heavier than Saucony Kinvara 16's 207 g.
  • Toe rocker is about the same: 37 % of length for Adidas Adizero Boston 13, 34 % of length for Saucony Kinvara 16.

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:

Adidas Adizero Boston 13

Saucony Kinvara 16

Independent sites; we are not affiliated with them.

Adidas Adizero Boston 13 details · Saucony Kinvara 16 details · Add more shoes