ShoeGeometry

Inov-8 Trailfly Pro vs La Sportiva Prodigio 2

Two shoes compared on measured geometry. Each cell carries a provenance badge; open a shoe for sources.

heel boneInov-8 Trailfly Pro: heel 34 mm, forefoot 28 mm (drop 6 mm); toe rocker not measured yet (visible lift over the front 23 % of length), typical shape drawn; heel bevel 9 % of length (height not measured), ending behind the heel bone (only the back edge is rounded).La Sportiva Prodigio 2: heel 34 mm, forefoot 28 mm (drop 6 mm); toe rocker 32 % of length, radius 44 % of length; heel bevel 18 % of length (height not measured), reaching in front of the heel bone (the sole still curves up under it: a heel rocker).La Sportiva Prodigio 2: toe rocker 32 % of length
  • Inov-8 Trailfly Pro34/28 mm · toe rocker not measured · heel bevel 9 %
  • La Sportiva Prodigio 234/28 mm · toe rocker 32 % · heel bevel 18 %
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
More cushioning under the heelAbout the same34 vs 34 mm heel stack
More under the forefootAbout the same28 vs 28 mm forefoot stack
A lower dropAbout the same6 vs 6 mm drop

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.

MetricInov-8 Trailfly Pro
Trail · Trail
La Sportiva Prodigio 2
Trail · Trail
Heel-to-toe drop6 mmStated6 mmStated
Heel stack34 mmStated34 mmStated
Forefoot stack28 mmStated28 mmStated
Weight227 gStated265 gStated
Toe rocker—32 %est.
Rocker radius—44 %est.
Rocker rise angle—27 degest.
Rocker angle at toe—59 degest.
Toe tip over ground31 mm*est.31 mmest.
Visible rocker lift onset77.2 %est.79.7 %est.
Toe spring (relative)—16.3 %est.
Heel bevel length9.3 %est.17.6 %est.
PlateNo plateNo plate
Primary foamPOWERFLOW Elite (supercritical TPEE)XFlow (nitrogen-infused supercritical EVA)
List price$195$170

Key differences

  • Heel-to-toe drop is about the same: 6 mm for Inov-8 Trailfly Pro, 6 mm for La Sportiva Prodigio 2.
  • Heel stack is about the same: 34 mm for Inov-8 Trailfly Pro, 34 mm for La Sportiva Prodigio 2.
  • Forefoot stack is about the same: 28 mm for Inov-8 Trailfly Pro, 28 mm for La Sportiva Prodigio 2.
  • Inov-8 Trailfly Pro's weight is 227 g, 38 g lighter than La Sportiva Prodigio 2's 265 g.

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:

Inov-8 Trailfly Pro

No review found yet.

La Sportiva Prodigio 2

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Inov-8 Trailfly Pro details · La Sportiva Prodigio 2 details · Add more shoes