ShoeGeometry

Brooks Glycerin Flex vs Hoka Rincon 4

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 boneBrooks Glycerin Flex: heel 36 mm, forefoot 30 mm (drop 6 mm); toe rocker 35 % of length, radius 61 % of length; heel bevel 10 % of length, 27 mm high at the back, ending behind the heel bone (only the back edge is rounded).Brooks Glycerin Flex: toe rocker 35 % of lengthHoka Rincon 4: heel 36 mm, forefoot 31 mm (drop 5 mm); toe rocker 37 % of length, radius 50 % of length; heel bevel 13 % of length, 22 mm high at the back, ending about under the heel bone.Hoka Rincon 4: toe rocker 37 % of length
  • Brooks Glycerin Flex36/30 mm · toe rocker 35 % · heel bevel 10 %
  • Hoka Rincon 436/31 mm · toe rocker 37 % · heel bevel 13 %
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.
MetricBrooks Glycerin Flex
Daily trainer · Road
Hoka Rincon 4
Daily trainer · Road
Heel-to-toe drop6 mmDerived5 mmStated
Heel stack36 mmStated36 mmStated
Forefoot stack30 mmStated31 mmStated
Weight250 gStated228 gStated
Toe rocker35 %est.37 %est.
Rocker radius61 %est.50 %est.
Rocker rise angle23 degest.26 degest.
Rocker angle at toe49 degest.57 degest.
Toe tip over ground42 mm*est.40 mmest.
Visible rocker lift onset72.6 %est.75 %est.
Toe spring (relative)18 %est.18.4 %est.
Heel bevel length9.6 %est.13.4 %*est.
Heel bevel height27 mm*est.22 mm*est.
Midsole width (forefoot)115.7 mmMeasured116.3 mmMeasured
Midsole width (heel)97.2 mmMeasured97 mmMeasured
Toe box shape74 %est.—
Interior forefoot width93.9 mmMeasured92.4 mmMeasured
Toebox width69.1 mmMeasured70.2 mmMeasured
Longitudinal stiffness22Derived43Derived
Midsole firmness75Derived59Derived
PlateNo plateNo plate
Primary foamDNA Tuned (dual-density supercritical)EVA (two-layer midsole)
List price$170$125

Key differences

  • Brooks Glycerin Flex's heel-to-toe drop is 6 mm, 1 mm higher than Hoka Rincon 4's 5 mm.
  • Heel stack is about the same: 36 mm for Brooks Glycerin Flex, 36 mm for Hoka Rincon 4.
  • Brooks Glycerin Flex's forefoot stack is 30 mm, 1 mm thinner than Hoka Rincon 4's 31 mm.
  • Brooks Glycerin Flex's weight is 250 g, 22 g heavier than Hoka Rincon 4's 228 g.
  • Brooks Glycerin Flex's toe rocker is 35 % of length, 2 % of length shorter than Hoka Rincon 4's 37 % of length.

Brooks Glycerin Flex details · Hoka Rincon 4 details · Add more shoes