Altra Olympus 5 vs Mammut Aenergy Trail Endurance Ultra
Weight and specs compared for 2026 — and which one to choose.
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 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 320 g it is 330 g (51%) lighter than the Altra Olympus 5 (650 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.