ShoeGeometry

On Cloudrunner 3 vs Puma ForeverRun Nitro 3

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

heel boneOn Cloudrunner 3: heel 31 mm, forefoot 23 mm (drop 8 mm); toe rocker 32 % of length, radius 39 % of length; heel bevel 13 % of length, 19 mm high at the back, ending about under the heel bone.On Cloudrunner 3: toe rocker 32 % of lengthPuma ForeverRun Nitro 3: heel 38 mm, forefoot 30 mm (drop 8 mm); toe rocker 32 % of length, radius 44 % of length; heel bevel 15 % of length (height not measured), reaching in front of the heel bone (the sole still curves up under it: a heel rocker).Puma ForeverRun Nitro 3: toe rocker 32 % of length
  • On Cloudrunner 331/23 mm · toe rocker 32 % · heel bevel 13 %
  • Puma ForeverRun Nitro 338/30 mm · toe rocker 32 % · 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-offAbout the same32.4 vs 32.3 % toe rocker
More cushioning under the heelPuma ForeverRun Nitro 331 vs 38 mm heel stack
More under the forefootPuma ForeverRun Nitro 323 vs 30 mm forefoot stack
A lower dropAbout the same8 vs 8 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.

MetricOn Cloudrunner 3
Stability · Road
Puma ForeverRun Nitro 3
Stability · Road
Heel-to-toe drop8 mmStated8 mmStated
Heel stack31 mmStated38 mmStated
Forefoot stack23 mmStated30 mmStated
Weight309 gStated279 gMeasured
Toe rocker32 %est.32 %est.
Rocker radius39 %est.44 %est.
Rocker rise angle27 degest.26 degest.
Rocker angle at toe55 degest.56 degest.
Toe tip over ground35 mmest.34 mmest.
Visible rocker lift onset77.7 %est.78.1 %est.
Toe spring (relative)16.3 %est.15.8 %est.
Heel bevel length12.6 %est.14.8 %est.
Heel bevel height19 mm*est.—
Midsole width (forefoot)118.3 mmMeasured—
Midsole width (heel)97.8 mmMeasured—
Toe box shape73 %est.76 %est.
Interior forefoot width95.5 mmMeasured—
Toebox width71 mmMeasured—
Longitudinal stiffness60Derived—
Midsole firmness90Derived—
PlateNo plateNo plate
Primary foamHeliondual-density NITROFOAM (PEBA blend), RUNGUIDE system + TPU heel clip
List price$160$150

Key differences

  • Heel-to-toe drop is about the same: 8 mm for On Cloudrunner 3, 8 mm for Puma ForeverRun Nitro 3.
  • On Cloudrunner 3's heel stack is 31 mm, 7 mm thinner than Puma ForeverRun Nitro 3's 38 mm.
  • On Cloudrunner 3's forefoot stack is 23 mm, 7 mm thinner than Puma ForeverRun Nitro 3's 30 mm.
  • On Cloudrunner 3's weight is 309 g, 30 g heavier than Puma ForeverRun Nitro 3's 279 g.
  • Toe rocker is about the same: 32 % of length for On Cloudrunner 3, 32 % of length for Puma ForeverRun Nitro 3.

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:

On Cloudrunner 3

Puma ForeverRun Nitro 3

Independent sites; we are not affiliated with them.

On Cloudrunner 3 details · Puma ForeverRun Nitro 3 details · Add more shoes