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ULA Catalyst vs ULA Circuit

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

ULA Circuit is the lighter option — 167 g lighter than the ULA Catalyst (13% less weight). If grams matter to you, that is the one to beat.
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Spec ULA Catalyst ULA Circuit
Weight 1,259 g · 1.259 kg · 2.78 lb
as listed; page does not state size
 1,092 g · 1.092 kg · 2.41 lb
as listed 'at a glance'; size not stated on the page
Brand ULA ULA
Category Backpack Backpack
ULA Catalyst
1,259 g

Versatile 68L semi-frameless pack for loaded trips.

See it in your base weight → Full details →
ULA Circuit
1,092 g

Ultralight 68L frameless pack. Thru-hiker favourite.

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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ULA Catalyst vs ULA Circuit: which should you buy?

If saving weight is your priority, the ULA Circuit wins — at 1,092 g it is 167 g (13%) lighter than the ULA Catalyst (1,259 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 backpack page, or browse the full gear weight database.

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