ShoeGeometry

NNormal Kjerag 02 vs Puma Voyage Nitro 4

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

heel boneNNormal Kjerag 02: heel 26 mm, forefoot 20 mm (drop 6 mm); toe rocker not measured, typical shape drawn.Puma Voyage Nitro 4: heel 38 mm, forefoot 32 mm (drop 6 mm); toe rocker 34 % of length, radius 41 % of length; heel bevel 11 % of length, 15 mm high at the back, ending about under the heel bone.Puma Voyage Nitro 4: toe rocker 34 % of length
  • NNormal Kjerag 0226/20 mm · toe rocker not measured
  • Puma Voyage Nitro 438/32 mm · toe rocker 34 % · heel bevel 11 %
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 heelPuma Voyage Nitro 426 vs 38 mm heel stack
More under the forefootPuma Voyage Nitro 420 vs 32 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.

MetricNNormal Kjerag 02
Trail · Trail
Puma Voyage Nitro 4
Trail · Trail
Heel-to-toe drop6 mmStated6 mmStated
Heel stack26 mmStated38 mmStated
Forefoot stack20 mmStated32 mmStated
Weight230 gStated272 gStated
Toe rocker—34 %est.
Rocker radius—41 %est.
Rocker rise angle—31 degest.
Rocker angle at toe—63 degest.
Toe tip over ground39 mmest.42 mm*est.
Visible rocker lift onset—74.4 %est.
Toe spring (relative)16.5 %est.20.8 %est.
Heel bevel length—11.1 %est.
Heel bevel height—15 mmest.
Toe box shape—75 %est.
PlateNo plateNo plate
Primary foamEExpure+ (supercritical TPEE)NITROFOAM
List price$215$160

Key differences

  • Heel-to-toe drop is about the same: 6 mm for NNormal Kjerag 02, 6 mm for Puma Voyage Nitro 4.
  • NNormal Kjerag 02's heel stack is 26 mm, 12 mm thinner than Puma Voyage Nitro 4's 38 mm.
  • NNormal Kjerag 02's forefoot stack is 20 mm, 12 mm thinner than Puma Voyage Nitro 4's 32 mm.
  • NNormal Kjerag 02's weight is 230 g, 42 g lighter than Puma Voyage Nitro 4's 272 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:

NNormal Kjerag 02

Puma Voyage Nitro 4

No review found yet.

Independent sites; we are not affiliated with them.

NNormal Kjerag 02 details · Puma Voyage Nitro 4 details · Add more shoes