The Adidas Ultraboost 5X is a road running shoe and the On Cloudrunner 2 Waterproof is a stability road running shoe. The Ultraboost 5X costs about $50 less (from $90) and is rated higher by buyers (4.6 vs 3.4 out of 5).
Specs side by side
| Spec | Ultraboost 5X | Cloudrunner 2 Waterproof |
|---|---|---|
| Price | $90–$99 | $140 |
| Rating | 4.6 / 5 (2,104 reviews) | 3.4 / 5 (46 reviews) |
| Weight | 9.7 oz | 9.5 oz |
| Heel-to-toe drop | 10 mm | 10 mm |
| Heel stack height | 39 mm | — |
| Cushioning | — | Balanced |
| Support | — | Stability |
| Surface | Road | Road |
| Available for | Men & Women | Women |
Specs and prices from Adidas and On, checked 2026-10-11. Weight is usually for a men's size 9–10.
Which should you get?
Get the Ultraboost 5X if…
- you want to spend less
- you want the more widely reviewed shoe
Get the Cloudrunner 2 Waterproof if…
- it fits you better or you like its colors
More comparisons
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- On Cloudrunner 2 Waterproof vs Brooks Adrenaline GTS 26
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