MTL Cirrus

MTL Cirrus

A Sky Runner Built For Speed

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We worked with our mountain running athletes
through the Merrell Test Lab to
create the
best lightweight shoe we could, made out of
new featherweight materials
but beefed up with
a plate for protection from sharp rocks you find
above the
treeline. This is a go-fast shoe
for the most technical runs.

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Inspiration Trail Running Innovation
Inspiration

Iron Max

The Cordillera Blanca is the world’s tallest and most
glaciated tropical mountain range. Peruvian runner Max
Delgado and his two best friends have established a
community of mountain runners who tackle multi-day
hikes in a matter of hours.

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Trail Running

Anatomy of a trail runner

While you may want to take your road shoes on your trail runs,
it’s important to know that trail shoes are vastly different.
Running on the road is about speed, while running on the trail
is all about protection. So, while road shoes are built to move
fast, trail shoes have features like abrasion-resistant uppers,
firm midsoles, rock plates, and knobby soles to provide
protection, support, and grip on varied terrain.

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Innovation

A Sky Runner
Made For Speed

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MTL Cirrus Shoes

MTL Cirrus

Vibram® Megagrip®
rubber
outsole
with lugs
only
where needed for
weight-saving grip 

Tensile, net-like
mesh upper
is
ultra-lightweight
and moves
fluidly
with the foot

TrailProtect™
underfoot
rock plate
shields the
foot on
rugged ascents
and
descents and gives
extra propulsion