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Altra Lone Peak 9 (Men's) vs Mammut Aenergy Trail Endurance Ultra

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

No winner on weight yet. The recorded weights have not both been verified on the same basis. Size, included parts and single-item versus pair weights can differ. Check the linked sources before choosing a replacement.

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Spec Altra Lone Peak 9 (Men's) Mammut Aenergy Trail Endurance Ultra
Weight 655 g · 0.655 kg · 1.44 lb
per pair (medium-sized pair)
 640 g · 0.640 kg · 1.41 lb
per pair (2 × 320 g), men's US 9.5; page does not say per shoe or per pair, so treated as per shoe
Brand Altra Mammut
Category Footwear Footwear
Altra Lone Peak 9 (Men's)
655 g

Zero-drop trail running shoe designed for thru-hiking. FootShape toe box and MaxTrac outsole for grip. Weight per shoe in US size 9. Versatile for all condition...

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Mammut Aenergy Trail Endurance Ultra
640 g

Lightweight trail running shoe designed for mid-to-long distance runs and hiking. Features Vibram Megagrip outsole and FLEXTRON PRO plate for technical terrain.

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Altra Lone Peak 9 (Men's) vs Mammut Aenergy Trail Endurance Ultra: which should you buy?

The listed weights alone are not enough to choose between these products. Confirm the size, included parts and weight basis against each source; choose equipment for the function and fit you need.

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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