ShoeGeometry

Inov-8 Trailfly Pro vs NNormal Cadi

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).NNormal Cadi: heel 35 mm, forefoot 29 mm (drop 6 mm); toe rocker 39 % of length, radius 52 % of length; heel bevel 10 % of length, 15 mm high at the back, ending about under the heel bone.NNormal Cadi: toe rocker 39 % of length
  • Inov-8 Trailfly Pro34/28 mm · toe rocker not measured · heel bevel 9 %
  • NNormal Cadi35/29 mm · toe rocker 39 % · heel bevel 10 %
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-offNNormal Cadi31.2 vs 40.8 mm toe tip
More cushioning under the heelAbout the same34 vs 35 mm heel stack
More under the forefootAbout the same28 vs 29 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
NNormal Cadi
Trail · Trail
Heel-to-toe drop6 mmStated6 mmStated
Heel stack34 mmStated35 mmStated
Forefoot stack28 mmStated29 mmStated
Weight227 gStated269 gStated
Toe rocker—39 %est.
Rocker radius—52 %est.
Rocker rise angle—28 degest.
Rocker angle at toe—66 degest.
Toe tip over ground31 mm*est.41 mmest.
Visible rocker lift onset77.2 %est.—
Toe spring (relative)—20.6 %est.
Heel bevel length9.3 %est.10.1 %est.
Heel bevel height—15 mmest.
PlateNo plateNo plate
Primary foamPOWERFLOW Elite (supercritical TPEE)Supercritical foam (EExpure family) with eTPU footbed
List price$195$175

Key differences

  • Heel-to-toe drop is about the same: 6 mm for Inov-8 Trailfly Pro, 6 mm for NNormal Cadi.
  • Inov-8 Trailfly Pro's heel stack is 34 mm, 1 mm thinner than NNormal Cadi's 35 mm.
  • Inov-8 Trailfly Pro's forefoot stack is 28 mm, 1 mm thinner than NNormal Cadi's 29 mm.
  • Inov-8 Trailfly Pro's weight is 227 g, 42 g lighter than NNormal Cadi's 269 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.

NNormal Cadi

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Inov-8 Trailfly Pro details · NNormal Cadi details · Add more shoes