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Altra Olympus 5 vs Mammut Aenergy Trail Endurance Ultra

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

Mammut Aenergy Trail Endurance Ultra is the lighter option — 60 g lighter than the Altra Olympus 5 (9% less weight). If grams matter to you, that is the one to beat.
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Spec Altra Olympus 5 Mammut Aenergy Trail Endurance Ultra
Weight 700 g · 0.700 kg · 1.54 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 Olympus 5
700 g

Maximum cushion zero-drop trail shoe for long days.

See it in your base weight → Full details →
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.

See it in your base weight → Full details →

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Altra Olympus 5 vs Mammut Aenergy Trail Endurance Ultra: which should you buy?

If saving weight is your priority, the Mammut Aenergy Trail Endurance Ultra wins — at 640 g it is 60 g (9%) lighter than the Altra Olympus 5 (700 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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