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Hoka Kaha 3 GTX vs On Running Cloudultra 2

Weight and specs compared for 2026 — and which one to choose.

Hoka Kaha 3 GTX is the lighter option — 70 g lighter than the On Running Cloudultra 2 (11% less weight). If grams matter to you, that is the one to beat.
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Spec Hoka Kaha 3 GTX On Running Cloudultra 2
Weight 550 g · 0.550 kg · 1.21 lb 620 g · 0.620 kg · 1.37 lb
Brand Hoka On Running
Category Footwear Footwear
Hoka Kaha 3 GTX
550 g

Premium hiking boot with Gore-Tex waterproofing and superior cushioning. Weight per shoe in men's size 9. Excellent support for long trails.

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On Running Cloudultra 2
620 g

Ultra trail shoe with CloudTec cushioning for long distances.

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Hoka Kaha 3 GTX vs On Running Cloudultra 2: which should you buy?

If saving weight is your priority, the Hoka Kaha 3 GTX wins — at 550 g it is 70 g (11%) lighter than the On Running Cloudultra 2 (620 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.

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