Darn Tough Run Micro Crew Ultra-Lightweight


Weight: 50 g

Darn Tough Run Micro Crew Ultra-Lightweight is a great thinner sock for hiking and running. The sock does not have underfoot cushioning, and is light and thin. This is our candidate for the best running sock out there!

For many hikers thinner is better when it comes to socks. Thin sock stays drier as it does not absorb as much moisture. It dries faster when the weather clears up. Paradoxically a wet thin sock can be warmer than a wet thicker sock, as body heat can warm a thin sock despite the moisture content in it. If your shoes fit well, you won’t need cushioning for blisters either.

The amazing part is that the Darn Tough lifetime warranty applies also for these thinner socks. If the socks don’t last, you will get a new pair, no questions asked. Guaranteed for life!

Darn Tough Run Micro Crew Ultra-Lightweight

Darn Tough makes one thing, and makes it better than anyone else – ask any thru hiker and you will likely hear the same. In order to unconditionally guarantee a hiking sock for life, it must be durable. It must maintain its comfort, and it has to fit for miles upon miles on-trail.

  • Men’s micro crew socks average 8.5 in. from heel to cuff – expect them to rise about 6 in. above a running sneaker.
  • A performance fit means no slipping, no bunching, no blisters. Here’s to focusing on your run and not your feet.
  • Arch support alleviates foot fatigue and bunching for long-running comfort with zero slippage.
  • Flex windows mean less material where your foot needs to move the most so nothing interferes with your stride.
  • Runners enjoy Merino Wool’s ability to dry quickly and move excess heat and moisture away from feet.
  • Our lowest profile, ultra-lightweight yarns create zero bulk, zero itch socks that feel like a second skin.
  • Made in Vermont, US

Unconditionally Guaranteed for Life – if these aren’t the longest lasting socks you’ve ever owned, return them for another pair. Warranty instructions can be found here.

These micro crew hiking socks feature soft terry loops underfoot and targeted protection over the ankle and Achilles.

Machine wash in warm water on gentle cycle with socks inside-out. Do not bleach. Tumble dry on low or hang dry. Do not dry clean. You can learn more about how to wash merino wool socks here.

Materials: 51% Nylon 44% Merino Wool 5% Lycra® Spandex
Size chart:
XS 2.5 – 5 4.5 – 7 35 – 37.5 2.5 – 4.5
S 5.5 – 7.5 7.5 – 9.5 38 – 40.5 5 – 7
M 8 – 9.5 10 – 11.5 41 – 42.5 7.5 – 9
L 10 – 12 12 – 14 43 – 45.5 9.5 – 11.5
XL 12.5 – 14.5 46 – 49.5 12 – 14
XXL 15 – 17 50 – 53 15 – 16


Weight 50 g



S, M, L, XL

SKU: N/A Category: