ShoeGeometry

ASICS Metaspeed Sky Tokyo vs Nike Vaporfly 4

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

heel boneASICS Metaspeed Sky Tokyo: heel 40 mm, forefoot 35 mm (drop 5 mm); toe rocker not measured, typical shape drawn.Nike Vaporfly 4: heel 36 mm, forefoot 30 mm (drop 6 mm); toe rocker 35 % of length, radius 47 % of length; heel bevel 11 % of length, 17 mm high at the back, ending about under the heel bone.Nike Vaporfly 4: toe rocker 35 % of length
  • ASICS Metaspeed Sky Tokyo40/35 mm · toe rocker not measured
  • Nike Vaporfly 436/30 mm · toe rocker 35 % · 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 heelASICS Metaspeed Sky Tokyo40 vs 36 mm heel stack
More under the forefootASICS Metaspeed Sky Tokyo35 vs 30 mm forefoot stack
A lower dropASICS Metaspeed Sky Tokyo5 vs 6 mm drop
A stiffer, snappier forefootASICS Metaspeed Sky Tokyo69 vs 53 /100 stiffness
A firmer, more stable feelNike Vaporfly 444 vs 55 /100 firmness
A wider base under the forefootASICS Metaspeed Sky Tokyo114.9 vs 110.6 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.

MetricASICS Metaspeed Sky Tokyo
Racing · Road
Nike Vaporfly 4
Racing · Road
Heel-to-toe drop5 mmDerived6 mmStated
Heel stack40 mmStated36 mmStated
Forefoot stack35 mmStated30 mmStated
Weight159 gStated190 gStated
Toe rocker—35 %est.
Rocker radius—47 %est.
Rocker rise angle—26 degest.
Rocker angle at toe—55 degest.
Toe tip over ground—38 mm*est.
Visible rocker lift onset—76.2 %est.
Toe spring (relative)—17.4 %est.
Heel bevel length—11.1 %est.
Heel bevel height—17 mm*est.
Midsole width (forefoot)114.9 mmMeasured110.6 mmMeasured
Midsole width (heel)75 mmMeasured77 mmMeasured
Toe box shape—71 %*est.
Interior forefoot width90.5 mmMeasured91.7 mmMeasured
Toebox width70.1 mmMeasured73.2 mmMeasured
Longitudinal stiffness69Derived53Derived
Midsole firmness44Derived55Derived
PlateCarbon plateCarbon plate
Primary foamFF Leap + FF Turbo PlusZoomX
List price$270$270

Key differences

  • ASICS Metaspeed Sky Tokyo's heel-to-toe drop is 5 mm, 1 mm lower than Nike Vaporfly 4's 6 mm.
  • ASICS Metaspeed Sky Tokyo's heel stack is 40 mm, 4 mm thicker than Nike Vaporfly 4's 36 mm.
  • ASICS Metaspeed Sky Tokyo's forefoot stack is 35 mm, 5 mm thicker than Nike Vaporfly 4's 30 mm.
  • ASICS Metaspeed Sky Tokyo's weight is 159 g, 31 g lighter than Nike Vaporfly 4's 190 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:

ASICS Metaspeed Sky Tokyo

Nike Vaporfly 4

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ASICS Metaspeed Sky Tokyo details · Nike Vaporfly 4 details · Add more shoes