ShoeGeometry

Altra Experience Wild 3 vs Topo Athletic MTN Racer 4

Two current shoes in the same category with similar stack height and drop, compared on the values in the database. Each cell carries a provenance badge; open a shoe for sources.

heel boneAltra Experience Wild 3: heel 33 mm, forefoot 29 mm (drop 4 mm); toe rocker 34 % of length, radius 50 % of length; heel bevel 12 % of length, 30 mm high at the back, ending about under the heel bone.Altra Experience Wild 3: toe rocker 34 % of lengthTopo Athletic MTN Racer 4: heel 33 mm, forefoot 28 mm (drop 5 mm); toe rocker 28 % of length, radius 36 % of length; heel bevel 12 % of length, 33 mm high at the back, ending about under the heel bone.Topo Athletic MTN Racer 4: toe rocker 28 % of length
  • Altra Experience Wild 333/29 mm · toe rocker 34 % · heel bevel 12 %
  • Topo Athletic MTN Racer 433/28 mm · toe rocker 28 % · heel bevel 12 %
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.
MetricAltra Experience Wild 3
Trail · Trail
Topo Athletic MTN Racer 4
Trail · Trail
Heel-to-toe drop4 mmStated5 mmStated
Heel stack33 mmStated33 mmStated
Forefoot stack29 mmStated28 mmStated
Weight278 gStated295 gStated
Toe rocker34 %est.28 %est.
Rocker radius50 %est.36 %est.
Rocker rise angle27 degest.31 degest.
Rocker angle at toe60 degest.63 degest.
Toe tip over ground36 mm*est.29 mmest.
Visible rocker lift onset75.3 %est.81.1 %est.
Toe spring (relative)17.3 %est.16.7 %est.
Heel bevel length12.3 %*est.12.1 %est.
Heel bevel height30 mm*est.33 mmest.
PlateNo plateNo plate
Primary foamEGOZipFoam
List price$150$155

Key differences

  • Altra Experience Wild 3's heel-to-toe drop is 4 mm, 1 mm lower than Topo Athletic MTN Racer 4's 5 mm.
  • Heel stack is about the same: 33 mm for Altra Experience Wild 3, 33 mm for Topo Athletic MTN Racer 4.
  • Altra Experience Wild 3's forefoot stack is 29 mm, 1 mm thicker than Topo Athletic MTN Racer 4's 28 mm.
  • Altra Experience Wild 3's weight is 278 g, 17 g lighter than Topo Athletic MTN Racer 4's 295 g.
  • Altra Experience Wild 3's toe rocker is 34 % of length, 6 % of length longer than Topo Athletic MTN Racer 4's 28 % of length.

Altra Experience Wild 3 details · Topo Athletic MTN Racer 4 details · Add more shoes