• Quarter Top Merino Wool Running & Hiking Sock - Ultralight - Autumn Orange
  • Quarter Top Merino Wool Running & Hiking Sock - Ultralight - Royal
  • Quarter Top Merino Wool Running & Hiking Sock - Ultralight - Cardinal
  • Quarter Top Merino Wool Running & Hiking Sock - Ultralight - Granite
  • Quarter Top Merino Wool Running & Hiking Sock - Ultralight - Midnight
  • Quarter Top Merino Wool Running & Hiking Sock - Ultralight - PNW Green
  • Man wearing Cloudline 1/4 top merino wool socks putting on trail shoes.
  • Hiker wearing Cloudline 1/4 top merino wool socks walking on rocky trail.
  • Two guys sitting in camp chairs putting on cloudline 1/4 top merino wool socks.
  • Cloudline 1/4 Top merino wool socks neatly folded on sleeping bag inside tent.
  • 2 Trail runners wearing Cloudline merino wool socks, running down trail with mountain towering in the distance.
  • Camper sitting in camp chair pulling on his Cloudline 1/4 top merino wool socks.
  • Video of trail runner wearing Cloudline merino wool socks, splashing through stream.
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CLOUDLINE

1/4 Top Running Sock - Ultralight

1/4 Top Running Sock - Ultralight

$ 18.99 USD
$ 18.99 USD $ 18.99 USD
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Men's Ultralight Merino Wool Running Socks – ¼ Top

Built for warm-weather trail runs, ultramarathons, and long days on the move, our men's ultralight merino wool running socks are Cloudline's lightest performance sock — engineered to keep your feet cool, dry, and blister-free from start to finish.

Cloudline's merino wool is naturally moisture-wicking and odor-resistant, delivering exceptional breathability whether you're climbing mountain trails or logging miles on the road. The ultralight construction keeps things barely-there underfoot, while the ¼ top ankle height sits just above the ankle to keep dirt, pebbles, and debris out so you can stay focused on the run. A smooth, precision fit means no rubbing, no slipping, and no blisters — mile after mile.

Perfect for trail running, ultramarathons, warm weather training, and hiking — these men's ultralight running socks are built to go the distance without slowing you down.

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SOCK FEATURES

▪︎ When you’re racing down the trail, there’s no time for blisters. Our Moisture-wicking merino wool blend wicks your sweat away for miles of happy, blister-free feet.


▪︎ Our super soft merino wool gives you itch-free comfort, without bunching, slipping, or rubbing. Log more blissful miles without stopping to readjust.


▪︎ Smelly feet don’t have to accompany your warm weather runs. Naturally odor-resistant merino wool keeps odors under control, so you can hit the town from the trail without a second thought.


▪︎ Don’t be afraid to put some epic miles on these socks — a reinforced heel and toe provide lasting durability for the miles ahead.


▪︎ Trail-tested for ultralight comfort in the Pacific Northwest.

SOCK DETAILS

▪︎ American Made from Quality Materials: The perfect blend of 59% Ultra Soft Merino Wool, 36% Nylon, and 5% Spandex.


▪︎ Ultralight Weight: Ultralight and breathable for warm-weather runs.


▪︎ ¼ Height: Sits just above the ankle to lockout trail debris, for perfect trail-running comfort.


▪︎ Easy Care: Always wash inside out to prevent pilling. Machine wash and dry warm, do not bleach. Can also be hand washed and line dried on the trail.

LIFETIME GUARANTEE

If you wear out a pair of Cloudline socks our team is here to get them replaced with our simple warranty process so you can get back on the trail.

Humanely raised sheep grazing in the mountains.

Merino You Can Feel Good About

Cloudline socks are knit exclusively with premium merino wool certified by the Responsible Wool Standard. This ensures our wool comes from farms that take a responsible approach to land management, and follow the principles of the Five Freedoms for Farm Animals.

  • Every Cloudline sock is proudly knit in the USA with the finest domestic and imported yarn.
  • We back every sock we make with a Lifetime Guarantee.
  • Cloudline socks are machine washable. Just turn inside out and wash with your normal laundry on warm /cold. Tumble Dry Low/Med.
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Overall rating: 4.8584905 / 5 from 106 reviews.

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Review highlights

Reviews

Great products and people

"Best of the best"

— Michael C. (5/5)

Another hit! Dog approved

"Fantastic sock. I ordered these in XL and the medium cushion in L. These definitely are more snug so I’m glad I sized up, but I love them."

— Kaleb (5/5)

Great socks for big adventures!

"I took 2 pair of Cloudline 1/4 Top Running Socks Ultralight on an 11-day bikepacking trip. They did not disappoint."

— Christopher M. (5/5)

Ultralight, as promised

"Perfect for a summer outing."

— Stephen G. (5/5)

No more stinking feet!

"These are awesome. Been running trails in them, working, going to school, riding my motorbike etc… Warm in cold weather, cool when it’s hot, just perfect. I’ve been wearing them for 3 days straight and still no noticeable smell, which is really amazing compared to my ordinary socks which are drenched in sweat after work (I wear security boots) and stink like really bad cheese…"

— Tim G. (5/5)

The Ideal Socks

"Cloudline socks are very comfortable and true to size. These ultra light socks keep my feet dry all day long, and the wool material is great for running outdoors and working out at the gym. Excellent stitching and perfect combination of colors."

— Alberto V. (5/5)

Favorite running socks

"These are pretty much the only socks I wear for running and most other activities. Incredible durability compared to other merino socks. Wish they made lightweight running shirts."

— Robert M. (5/5)

Nice, but don't feel Ultralight

"Good socks, but they feel much thicker than "ultralight," which is disappointing, as I bought them to use during warm months, and I notice they're not as good with keeping my feet as dry as other Cloudline socks do."

— Kyle S. (3/5)

Great summer hiking socks. No

"Great summer hiking socks. No pics of the 1/4 tops. Here’s the mid weights at work on the Appalachian trail Round Bald N.C."

— Bernard C. (4/5)

1/4 top running sock ultralight

"These socks are very comfortable and durable. Well worth the money as my son goes through regular socks very fast. I hated buying socks every few months because of holes. The warranty on these is great!"

— Gunilla S. (5/5)

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