Verdict: The On Cloudmonster 2 outperforms the Allbirds Tree Runners for dedicated running with 40 mm stack height and CloudTec pods delivering better shock absorption on long efforts per Runner's World testing. Allbirds Tree Runners excel in casual scenarios with 7.2 oz weight and tree-fiber breathability but trail on durability at 250-300 miles. On wins for runners logging consistent mileage while Allbirds suits mixed daily wear.
Winner: On Cloudmonster 2
Allbirds Tree Runners: 6.5/10
On Cloudmonster 2: 8/10
| Allbirds Tree Runners | On Cloudmonster 2 | |
|---|---|---|
| Weight (men's size 9) | 7.2 oz | 10.4 oz |
| Heel-to-toe drop | 5 mm | 8 mm |
| Upper material | Eucalyptus tree fiber | Engineered mesh |
| Cushioning | SweetFoam | CloudTec |
Our pick: On Cloudmonster 2.
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