ShoeGeometry

La Sportiva Prodigio Pro vs On Cloudultra Pro

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

heel boneLa Sportiva Prodigio Pro: heel 34 mm, forefoot 28 mm (drop 6 mm); toe rocker 39 % of length, radius 51 % of length; heel bevel 18 % of length, 6 mm high at the back, reaching in front of the heel bone (the sole still curves up under it: a heel rocker).La Sportiva Prodigio Pro: toe rocker 39 % 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, 21 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
  • La Sportiva Prodigio Pro34/28 mm · toe rocker 39 % · heel bevel 18 %
  • 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.

Which suits you

If you wantPickBecause
A smoother roll at toe-offLa Sportiva Prodigio Pro39.2 vs 39.5 % toe rocker; 44.4 vs 36.3 mm toe tip
More cushioning under the heelOn Cloudultra Pro34 vs 38.5 mm heel stack
More under the forefootOn Cloudultra Pro28 vs 32.5 mm forefoot stack
A lower dropAbout the same6 vs 6 mm drop
A stiffer, snappier forefootAbout the same33 vs 34 /100 stiffness
A firmer, more stable feelAbout the same56 vs 59 /100 firmness
A wider base under the forefootAbout the same117.1 vs 117.3 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.

MetricLa Sportiva Prodigio Pro
Trail · Trail
On Cloudultra Pro
Trail · Trail
Heel-to-toe drop6 mmStated6 mmStated
Heel stack34 mmStated38.5 mmStated
Forefoot stack28 mmStated32.5 mmStated
Weight267 gStated264 gStated
Toe rocker39 %est.40 %est.
Rocker radius51 %est.63 %est.
Rocker rise angle28 degest.24 degest.
Rocker angle at toe59 degest.64 degest.
Toe tip over ground44 mmest.36 mmest.
Visible rocker lift onset74.6 %est.72.2 %est.
Toe spring (relative)20.9 %est.17.6 %est.
Heel bevel length18.1 %est.15.3 %*est.
Heel bevel height6 mm*est.21 mm*est.
Midsole width (forefoot)117.1 mmMeasured117.3 mmMeasured
Midsole width (heel)86.1 mmMeasured91.6 mmMeasured
Toe box shape—75 %est.
Interior forefoot width92 mmMeasured94.6 mmMeasured
Toebox width72.4 mmMeasured74.6 mmMeasured
Longitudinal stiffness33Derived34Derived
Midsole firmness56Derived59Derived
PlateRock platePlate unknown
Primary foamXFlow Speed (supercritical TPU core)Dual-layer Helion HF (PEBA-based)
List price$225$260

Key differences

  • Heel-to-toe drop is about the same: 6 mm for La Sportiva Prodigio Pro, 6 mm for On Cloudultra Pro.
  • La Sportiva Prodigio Pro's heel stack is 34 mm, 4.5 mm thinner than On Cloudultra Pro's 38.5 mm.
  • La Sportiva Prodigio Pro's forefoot stack is 28 mm, 4.5 mm thinner than On Cloudultra Pro's 32.5 mm.
  • Weight is about the same: 267 g for La Sportiva Prodigio Pro, 264 g for On Cloudultra Pro.
  • Toe rocker is about the same: 39 % of length for La Sportiva Prodigio Pro, 40 % of length for On Cloudultra Pro.

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:

La Sportiva Prodigio Pro

On Cloudultra Pro

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La Sportiva Prodigio Pro details · On Cloudultra Pro details · Add more shoes