ShoeGeometry

Saucony Ride TR3 vs VJ FZN Aerofly

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

heel boneSaucony Ride TR3: heel 37 mm, forefoot 29 mm (drop 8 mm); toe rocker 32 % of length, radius 41 % of length; heel bevel 13 % of length (height not measured), ending about under the heel bone.Saucony Ride TR3: toe rocker 32 % of lengthVJ FZN Aerofly: heel 38 mm, forefoot 30 mm (drop 8 mm); toe rocker not measured, typical shape drawn; heel bevel 11 % of length, 21 mm high at the back, ending about under the heel bone.
  • Saucony Ride TR337/29 mm · toe rocker 32 % · heel bevel 13 %
  • VJ FZN Aerofly38/30 mm · toe rocker not measured · 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 heelAbout the same37 vs 38 mm heel stack
More under the forefootAbout the same29 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.

MetricSaucony Ride TR3
Road/trail hybrid · Mixed
VJ FZN Aerofly
Road/trail hybrid · Mixed
Heel-to-toe drop8 mmStated8 mmStated
Heel stack37 mmStated38 mmStated
Forefoot stack29 mmStated30 mmStated
Weight283 gStated245 gStated
Toe rocker32 %est.—
Rocker radius41 %est.—
Rocker rise angle28 degest.—
Rocker angle at toe59 degest.—
Toe tip over ground36 mmest.41 mm*est.
Visible rocker lift onset80.5 %est.—
Toe spring (relative)17.3 %est.19.4 %est.
Heel bevel length13 %est.11.1 %est.
Heel bevel height—21 mmest.
Toe box shape75 %est.—
PlateNo plateRock plate
Primary foamPWRRUN+SuperFOAMance (nitrogen-infused EVA)
List price$150$205

Key differences

  • Heel-to-toe drop is about the same: 8 mm for Saucony Ride TR3, 8 mm for VJ FZN Aerofly.
  • Saucony Ride TR3's heel stack is 37 mm, 1 mm thinner than VJ FZN Aerofly's 38 mm.
  • Saucony Ride TR3's forefoot stack is 29 mm, 1 mm thinner than VJ FZN Aerofly's 30 mm.
  • Saucony Ride TR3's weight is 283 g, 38 g heavier than VJ FZN Aerofly's 245 g.

Saucony Ride TR3 details · VJ FZN Aerofly details · Add more shoes