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On Running Cloudultra 2 vs Topo Athletic Ultraventure 4
Weight and specs compared for 2026 — and which one to choose.
Topo Athletic Ultraventure 4 is the lighter option — 335 g lighter than the On Running Cloudultra 2 (54% less weight). If grams matter to you, that is the one to beat.
On Running Cloudultra 2
620 g
Ultra trail shoe with CloudTec cushioning for long distances.
Full details →Topo Athletic Ultraventure 4
285 g
Max-cushion trail shoe with a roomy toe box, 5mm drop and Vibram Megagrip outsole for long-distance hikes.
Check price Full details →On Running Cloudultra 2 vs Topo Athletic Ultraventure 4: which should you buy?
If saving weight is your priority, the Topo Athletic Ultraventure 4 wins — at 285 g it is 335 g (54%) 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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