On Running Cloudultra 2 vs Salomon X Ultra 5 GORE-TEX
Weight and specs compared for 2026 — and which one to choose.
Ultra trail shoe with CloudTec cushioning for long distances.
Full details →Waterproof low hiking shoe with GORE-TEX membrane. Advanced Chassis for torsional stability. Contagrip MA outsole. Quicklace system. 380g per shoe.
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On Running Cloudultra 2 vs Salomon X Ultra 5 GORE-TEX: which should you buy?
If saving weight is your priority, the On Running Cloudultra 2 wins — at 620 g it is 140 g (18%) lighter than the Salomon X Ultra 5 GORE-TEX (760 g). That said, the heavier option may justify the extra grams with more capacity, durability or comfort, so weigh the trade-off against how you'll use it.
See where both rank against everything else in this category on the lightest footwear page, or browse the full gear weight database.