Smartwool PhD Run Light Elite Low Cut Sock

Step smart.

Make every step count with the Smartwool PhD Run Light Elite Low Cut Sock. Light cushioning provides just enough padding for long runs on the pavement, while the merino wool/nylon blend naturally wicks moisture, regulates your foot's temperature, and resists odor-causing microbial growth. 

  • Merino wool/nylon/elastane blend
  • Lightweight
  • Light cushioning
  • Reviews
  • Q & A

Comfortable and breathable

  • Familiarity: I've put it through the wringer

These socks are something else, they offer the perfect amount of padding in the heel and toe areas to help prevent blisters on longer runs. Wool is naturally anti-microbial so they won't smell and offer the best temperature regulation so they'll breathe really well.

The Socks!

  • Familiarity: I've put it through the wringer
  • Fit: True to size

Smartwool is a company I really love especially in the socks department the fit is great and so comfortable. I love that they have a different style for every endeavor.

Great Socks

  • Familiarity: I've put it through the wringer
  • Fit: True to size

Comfortable, slightly cushioned in the heel, contains merino for the stench resistance, and carries a 2 year manufacturer warranty.

James Bond Socks

  • Familiarity: I gave it as a gift but have feedback to share

Got as a gift, here is his review

"If James Bond was a trail runner, he would use these. They stay dry where other socks do not, they are comfy and perform, they breathe and they are durable. Anything Smartwool rocks anyway so these are my go to running sock"

switching all socks over to smartwool

  • Familiarity: I've used it several times
  • Fit: True to size

great brand, lightweight and warm for cold days...but also great for summer, since they are wool my feet don't stay sweaty when on a long hike.

Still my fave!

  • Familiarity: I've put it through the wringer
  • Fit: True to size
  • Size Bought: Medium

Still switching out some of my older socks with these, and they are the best. Great comfort for running, or even wearing all-day. Highly recommended!

My go to running socks

  • Size Bought: Medium

I've been switching out some of my older running socks for these, and they're amazing! They are comfortable and the fit is amazing. Couldn't be happier with them. I wear a size 10 in Saucony running shoes and got a medium, for reference. Grab yours and go!

Amazing comfort!

  • Familiarity: I've put it through the wringer
  • Fit: True to size

I love these socks. Not only do they preform for running, but they are also great for ultra light backpacking. The comfort and performance is all there.

Smartwool socks are the best!

  • Familiarity: I've used it once or twice and have initial impressions
  • Fit: True to size

Smartwool socks are hard to beat and their running socks have also won a place in my heart! I love these socks for my mornings in the gym, my feet stay dry, comfortable and never overheat!

Great socks

  • Familiarity: I've used it several times
  • Fit: True to size
  • Size Bought: M

I use shoes size 24.5cm, bought M.
It's comfortable for running, trekking and trail running.

The best socks ever

  • Familiarity: I've put it through the wringer
  • Fit: True to size
  • Size Bought: L

I really love smartwhool socks, these socks are great for all, casual, running, ... you name it. I totally recommend these socks, cant go back to normal socks now. I use shoes size 9, bought L

Men's PhD Run Socks

Professional Ultra Runner & Fan Field Tester Timothy Olsen shares how the PhD Run socks help him go far, and feel good.

Developing the PhD Run Light Elite Sock

SmartWool's Head of Product Development, John Ramsey, fills us in on the new PhD run sock and what it took to develop it.