ShoeGeometry

Salomon Aero Blaze 4 GRVL

Road/trail hybridMixedNo plate2026Men'sCurrent

At a glance

Heel-to-toe drop
8 mmStated
Stack, heel / forefoot
not measured yet
Weight
252 gStated
Plate
No plate
Toe rocker
33 % of lengthest.photos 32–33 %
Heel bevel
14.6 % of lengthest.rough estimate; photos 14–16 %
Stiffness / firmness
not measured yet
Primary foam
optiFOAM2 (supercritical)

How it compares

  • Salomon Aero Blaze 4 GRVL's heel-to-toe drop is 8 mm, higher than the catalogue median of 6 mm (59% of the 179 other current shoes are lower).
  • Salomon Aero Blaze 4 GRVL's weight is 252 g, lighter than the catalogue median of 269 g (31% of the 167 other current shoes are lighter).
  • 4 shoes with similar geometry from other lines.

Differences smaller than the precision of the sources (about 1 mm of stack, 8 g, or the spread between photos for photo estimates) are reported as about the same.

Specifications

Heel-to-toe drop
Manufacturer stated
8mm
MediumSpec listingbrand figure, reported by Alastair Runningsource
Heel stack
No approved value yet.
Forefoot stack
No approved value yet.
Weight
Manufacturer stated
252g
MediumSpec listingbrand figure, reported by Alastair Runningsource
Plate
No plate
Primary foam
optiFOAM2 (supercritical)
List price
$140

Plate, foam and price from source.

Geometry

Catalogue average: heel 38 mm, forefoot 32 mm, toe rocker 35 %Salomon Aero Blaze 4 GRVL: stack not measured; toe rocker 33 % of length, radius 43 % of length; heel bevel 15 % of length, 24 mm high at the back, reaching in front of the heel bone (the sole still curves up under it: a heel rocker).Under the centre of the heel bone: 12 % of length from the heel, where heel stack is measuredheel boneHeel contact: the sole is within 4.5 mm of the ground from 15 % of length (foam compresses more under load), reaching in front of the heel bone (the sole still curves up under it: a heel rocker)heel bevel 15 %Toe rocker: the front 33 % of the length curves up (the curve leaves the ground 67 % of length from the heel)toe rocker 33 %toeheel
Front: toe rocker shorter longerRear: heel stack lower higher not measured
Dashed: average of the catalogue
  • Stack not published: typical heel and forefoot drawn
Illustrative profile, not a photograph or scan: drawn to scale for a 300 mm shoe from published stack heights and photo estimates of the unloaded shoe (under body weight the foam compresses and the curves flatten). The grey upper is a generic outline, not this shoe’s. Salomon Aero Blaze 4 GRVL: stack not measured; toe rocker 33 % of length, radius 43 % of length; heel bevel 15 % of length, 24 mm high at the back, reaching in front of the heel bone (the sole still curves up under it: a heel rocker). Dashed midsole: typical values stand in for what this shoe has no measurement of. Heel bone: 12 % of length from the heel, where heel stack is measured. Heel bevel and toe rocker are marked where each curve meets the ground; for the heel that is where the sole comes within 4.5 mm of the ground, which foam compression closes under body weight.

Percent values are relative to shoe length so they compare across images and sizes; widths in millimetres are lab measurements from the cited source, while toe tip and heel heights in millimetres are photo estimates converted for a men’s US 9 (assumed 300 mm long), so approximate. See how rocker geometry is defined.

Toe rocker
AI estimated
33%

2 photos range 32–33 %; shown is their median.

MediumSide photosource
Rocker radius
AI estimated
43%

2 photos range 43–43 %; shown is one of the two that agree most closely.

MediumSide photosource
Rocker rise angle
AI estimated
28deg

2 photos range 28–29 deg; shown is their median.

MediumSide photosource
Toe tip over ground
AI estimated
36mm

2 photos range 35–37 mm; shown is their median.

MediumSide photosource
Rocker angle at toe
AI estimated
62deg

2 photos range 58–62 deg; shown is one of the two that agree most closely.

MediumSide photosource
Visible rocker lift onset
AI estimated
77.4%

2 photos range 77.4–78.1 %; shown is one of the two that agree most closely.

MediumSide photosource
Toe spring (relative)
AI estimated
17.5%

2 photos range 16.9–18.1 %; shown is their median.

MediumSide photosource
Heel bevel length
AI estimated
14.6%

2 photos range 13.6–15.7 %; shown is the average of the two that agree most closely.

MediumSide photosource
Heel bevel height
AI estimated
24mm

2 photos range 22–26 mm; shown is the average of the two that agree most closely.

MediumSide photosource
Wrong value? Missing data? Tell me
Stored only to improve the site; see privacy.

Sources

  • Best Salomon Running Shoes 2026: 9 Tested PicksreviewAlastair Runningaccessed 2026-10-04open ↗
  • salomon-aero-blaze-4-grvl lateral product photoimageZapposaccessed 2026-10-04open ↗
  • salomon-aero-blaze-4-grvl lateral product photoimageZapposaccessed 2026-10-04open ↗
  • https://www.salomon.com/en-us/product/aero-blaze-4-grvl-li9271manufacturersalomon.comaccessed 2026-10-04open ↗categorical specs (plate/foam/price) read from this page
Technical detail: every recorded value, method and version (20)

All approved observations

Every recorded value, including superseded ones. The displayed value per metric is chosen by precedence (measured › stated › derived › AI estimated), then confidence, then recency. 18 further observations awaiting review.

MetricValueClassConfidenceMethodSourceRecorded
Heel-to-toe drop8 mmStatedMediumSpec listingAlastair Running2026-10-04
Weight252 gStatedMediumSpec listingAlastair Running2026-10-04
Rocker apex67.7 %est.LowSide photoZappos2026-10-04
Rocker apex66.8 %est.MediumSide photoZappos2026-10-04
Rocker radius43 %est.LowSide photoZappos2026-10-04
Rocker radius43 %est.MediumSide photoZappos2026-10-04
Rocker rise angle29 degest.MediumSide photoZappos2026-10-04
Rocker rise angle28 degest.LowSide photoZappos2026-10-04
Toe tip over ground35 mmest.LowSide photoZappos2026-10-04
Toe tip over ground37 mmest.MediumSide photoZappos2026-10-04
Rocker angle at toe58 degest.LowSide photoZappos2026-10-04
Rocker angle at toe62 degest.MediumSide photoZappos2026-10-04
Visible rocker lift onset78.1 %est.LowSide photoZappos2026-10-04
Visible rocker lift onset77.4 %est.MediumSide photoZappos2026-10-04
Toe spring (relative)16.9 %est.LowSide photoZappos2026-10-04
Toe spring (relative)18.1 %est.MediumSide photoZappos2026-10-04
Heel bevel length13.6 %est.LowSide photoZappos2026-10-04
Heel bevel length15.7 %est.MediumSide photoZappos2026-10-04
Heel bevel height22 mmest.LowSide photoZappos2026-10-04
Heel bevel height26 mmest.MediumSide photoZappos2026-10-04

Classes: Manufacturer stated · Externally measured · AI estimated · Derived · User reported. Hover a method for its identifier and algorithm version.

Source notes

  • Zappos: sha256=2bbaf6980442916024ba72c3aef6696bacc0bb0ef06ceccc50306649dee1de51; 0.3
  • Zappos: sha256=54f922ddd5fffb7a246240361085ac756147d200233477ac23b2a2dcf015e84c; 0.3
  • salomon.com: categorical specs (plate/foam/price) read from this page

Shoes with similar geometry

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