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Inov-8 Trailfly Ultra G 300 vs Merrell Agility Peak 5

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

No winner on weight yet. Some brands publish the weight of one shoe, others the weight of a pair, and we have not yet confirmed which one applies to either of these. Until both are checked against the maker's own figure, the numbers below are not a fair comparison, so choose on fit, features and price.
Spec Inov-8 Trailfly Ultra G 300 Merrell Agility Peak 5
Weight 540 g · 0.540 kg · 1.19 lb
as listed — one shoe or a pair, not yet confirmed
 540 g · 0.540 kg · 1.19 lb
as listed — one shoe or a pair, not yet confirmed
Brand Inov-8 Merrell
Category Footwear Footwear
Inov-8 Trailfly Ultra G 300
540 g as listed

Graphene-enhanced trail shoe for ultra distances.

See it in your base weight → Full details →
Merrell Agility Peak 5
540 g as listed

Lightweight trail running shoe with FloatPro cushioning.

See it in your base weight → Full details →

Building a pack? Add either one to your HikeLoad list, or drop its weight into the base weight calculator, and see what it does to your total weight.

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Inov-8 Trailfly Ultra G 300 vs Merrell Agility Peak 5: which should you buy?

We list the Inov-8 Trailfly Ultra G 300 at 540 g and the Merrell Agility Peak 5 at 540 g, but that is not enough to call one lighter: one of these numbers may be a single shoe and the other a pair. We are checking every weight in the database against the maker's own page. Once both are confirmed, this page will say which one wins on weight.

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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