ShoeGeometry

Brooks Cascadia 20 vs On Cloudultra Pro

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 Cascadia 20: heel 39 mm, forefoot 33 mm (drop 6 mm); toe rocker 36 % of length, radius 44 % of length; heel bevel 8 % of length, 23 mm high at the back, ending behind the heel bone (only the back edge is rounded).Brooks Cascadia 20: toe rocker 36 % of lengthOn Cloudultra Pro: heel 39 mm, forefoot 33 mm (drop 6 mm); toe rocker 40 % of length, radius 63 % of length; heel bevel 15 % of length, 20 mm high at the back, reaching in front of the heel bone (the sole still curves up under it: a heel rocker).On Cloudultra Pro: toe rocker 40 % of length
  • Brooks Cascadia 2039/33 mm · toe rocker 36 % · heel bevel 8 %
  • On Cloudultra Pro39/33 mm · toe rocker 40 % · heel bevel 15 %
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 Cascadia 20
Trail · Trail
On Cloudultra Pro
Trail · Trail
Heel-to-toe drop6 mmDerived6 mmStated
Heel stack39 mmStated38.5 mmStated
Forefoot stack33 mmStated32.5 mmStated
Weight306 gStated264 gStated
Toe rocker36 %est.40 %est.
Rocker radius44 %est.63 %est.
Rocker rise angle28 degest.24 degest.
Rocker angle at toe60 degest.64 degest.
Toe tip over ground44 mm*est.36 mmest.
Visible rocker lift onset76.3 %est.72.2 %est.
Toe spring (relative)19.4 %est.17.6 %est.
Heel bevel length7.7 %*est.15.3 %*est.
Heel bevel height23 mm*est.20 mm*est.
Midsole width (forefoot)117.7 mmMeasured117.3 mmMeasured
Midsole width (heel)98.5 mmMeasured91.6 mmMeasured
Toe box shape—75 %est.
Interior forefoot width93.7 mmMeasured94.6 mmMeasured
Toebox width70.6 mmMeasured74.6 mmMeasured
Longitudinal stiffness53Derived34Derived
Midsole firmness74Derived59Derived
PlateRock platePlate unknown
Primary foamDNA Flash v2Dual-layer Helion HF (PEBA-based)
List price$160$260

Key differences

  • Heel-to-toe drop is about the same: 6 mm for Brooks Cascadia 20, 6 mm for On Cloudultra Pro.
  • Heel stack is about the same: 39 mm for Brooks Cascadia 20, 38.5 mm for On Cloudultra Pro.
  • Forefoot stack is about the same: 33 mm for Brooks Cascadia 20, 32.5 mm for On Cloudultra Pro.
  • Brooks Cascadia 20's weight is 306 g, 42 g heavier than On Cloudultra Pro's 264 g.
  • Brooks Cascadia 20's toe rocker is 36 % of length, 3 % of length shorter than On Cloudultra Pro's 40 % of length.

Brooks Cascadia 20 details · On Cloudultra Pro details · Add more shoes