Brooks Ghost 18 vs On Cloudmonster 3

Every spec side by side, from each maker's published figures.

Better figure, where one is clearly better

Ghost 18 compared with Cloudmonster 3
BrooksGhost 18OnCloudmonster 3
Overview
ReleasedMay 2026March 2026
Fit and feel
Made forRoad runningRoad running
Weight289 g (better)295 g
Heel height36 mm35 mm
Forefoot height26 mm29 mm
Drop10 mm6 mm
Carbon plateNoNo
Midsole foamNitrogen-infused DNA LOFT v3; OrthoLite X-60 socklinerDual-density Helion foam in a triple layer of CloudTec cushioning; enhanced rocker shape
Plate–Nylon-blend Speedboard
UpperTwo-colour air mesh (triple jacquard engineered mesh, per Running Warehouse); flat-knit, padded tongue; 55.3% recycled materials in the upperEngineered knit with targeted breathable zones; enhanced tongue
OutsoleRoadTack rubberCompressed rubber
Fit–Regular, true to size (On)
Use
Best forRoad running, daily runs, walking (Brooks)Everyday runs; On calls it a daily trainer
Measured figuresBrooks gives 289.2 g (10.2 oz). Running Warehouse, men's US 9: 283 g, 36 mm heel, 26 mm forefoot. RunRepeat lab: 289 g, 37.3 mm heel, 25.1 mm forefoot, 12.2 mm dropOn gives 295 g for a men's US 8.5. Running Warehouse, men's US 9: 295 g, 40 mm heel, 34 mm forefoot. RunRepeat lab: 301 g, 38.6 mm heel, 32.2 mm forefoot, 6.4 mm drop
Design
WidthsNarrow (1B), medium (1D), wide (2E) and extra wide (4E)Regular and wide

More comparisons