ShoeGeometry

Brooks Ghost AMP vs New Balance Fresh Foam X 880v15

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

heel boneBrooks Ghost AMP: heel 36 mm, forefoot 30 mm (drop 6 mm); toe rocker 33 % of length, radius 40 % of length; heel bevel 9 % of length, 19 mm high at the back, ending behind the heel bone (only the back edge is rounded).Brooks Ghost AMP: toe rocker 33 % of lengthNew Balance Fresh Foam X 880v15: heel 41 mm, forefoot 35 mm (drop 6 mm); toe rocker 37 % of length, radius 51 % of length; heel bevel 11 % of length, 21 mm high at the back, ending about under the heel bone.New Balance Fresh Foam X 880v15: toe rocker 37 % of length
  • Brooks Ghost AMP36/30 mm · toe rocker 33 % · heel bevel 9 %
  • New Balance Fresh Foam X 880v1541/35 mm · toe rocker 37 % · 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
A smoother roll at toe-offNew Balance Fresh Foam X 880v1532.7 vs 36.8 % toe rocker
More cushioning under the heelNew Balance Fresh Foam X 880v1536 vs 40.5 mm heel stack
More under the forefootNew Balance Fresh Foam X 880v1530 vs 34.5 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.

MetricBrooks Ghost AMP
Daily trainer · Road
New Balance Fresh Foam X 880v15
Daily trainer · Road
Heel-to-toe drop6 mmStated6 mmStated
Heel stack36 mmStated40.5 mmStated
Forefoot stack30 mmStated34.5 mmStated
Weight255 gStated—
Toe rocker33 %est.37 %est.
Rocker radius40 %est.51 %est.
Rocker rise angle30 degest.28 degest.
Rocker angle at toe63 degest.61 degest.
Toe tip over ground39 mm*est.39 mm*est.
Visible rocker lift onset78.1 %est.74.9 %est.
Toe spring (relative)19.2 %est.19.3 %est.
Heel bevel length8.9 %est.11.1 %*est.
Heel bevel height19 mm*est.21 mm*est.
Midsole width (forefoot)112.2 mmMeasured—
Midsole width (heel)94.2 mmMeasured—
Toe box shape72 %est.76 %*est.
Interior forefoot width94.4 mmMeasured—
Toebox width71 mmMeasured—
Longitudinal stiffness15Derived—
Midsole firmness52Derived—
PlateNo plateNo plate
Primary foamDNA Hype (PEBA/EVA blend)Fresh Foam X
List price$150$140

Key differences

  • Heel-to-toe drop is about the same: 6 mm for Brooks Ghost AMP, 6 mm for New Balance Fresh Foam X 880v15.
  • Brooks Ghost AMP's heel stack is 36 mm, 4.5 mm thinner than New Balance Fresh Foam X 880v15's 40.5 mm.
  • Brooks Ghost AMP's forefoot stack is 30 mm, 4.5 mm thinner than New Balance Fresh Foam X 880v15's 34.5 mm.
  • Brooks Ghost AMP's toe rocker is 33 % of length, 4 % of length shorter than New Balance Fresh Foam X 880v15's 37 % of length.

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:

Brooks Ghost AMP

New Balance Fresh Foam X 880v15

Independent sites; we are not affiliated with them.

Brooks Ghost AMP details · New Balance Fresh Foam X 880v15 details · Add more shoes