Engineered Foot Protection

TRMX Inside
TRMX Outside
  • Constructed with THORLON® blended with THOR•WICK® COOL fibers for superior softness, resilience, durability and extra moisture-wicking for drier, cooler, better feeling feet.

  • Cushioned instep and arch for a better fit, more support and less pressure on the feet for a more comfortable run.

  • Unique padding specifically engineered for trail running, clinically shown to reduce blisters, pain, pressures and moisture.

  • Low profile toe seam won’t rub or irritate feet.

See the Outside
Beyond Socks

For Feet That Hurt

During or after your activity

Learn More
Beyond Socks

For Feet That Do Not Hurt

During or after your activity

Learn More

Your Feet Will Feel Better Or Your Money Back®

Outdoor Trail Running socks

A Sport that’s Tough on Your Feet

Trail running’s popularity is exploding—it’s a great form of exercise and an opportunity to meet personal challenges and surpass personal “bests.” But running up and down trails, pounding the rocks, slogging through dirt and mud, kicking up dust and dealing with the whims of the weather all take a toll on your feet. In fact, the Institute for Preventive Foot Health/NPD 2012 National Foot Health Assessment has shown that after marathoners, trail runners are more likely than any other sport enthusiast to experience foot conditions, especially blisters

“I walk/run on a dirt/gravel road and was looking for a way not to feel all the rocks in the road. These socks are so good at cushioning that I want to wear them all the time on our farm.” Phileta R.

The Right Gear is Key

Staying on your feet and on the trail requires more than good conditioning. It takes gear that’s comfortable, protects your feet and won’t let you down. Painful feet or a blister will slow you down and take a lot of the joy out of your excursion. The right shoes are important, and many manufacturers now offer a variety of all-terrain shoes to choose from. But shoes are only part of the story for off-road running. The right padded socks are also critical—and here you have only one choice if you want the best possible foot protection and comfort: Thorlos clinically-tested (CTPS) trail running socks. They will protect your feet inside your running shoe and out—the top of the padded sock has a special, one and a half -inch, snug-fit ribbed top to keep dirt and debris from entering the padded sock as you run.

“I've run thousands of miles with these trail running socks, and have tried numerous other types of socks made for trail running; these are hands down the best. The moderate cushion (medium thickness) is perfect for all conditions.” Todd S.

How Thorlos Help

Thorlos clinically-tested padding provides your feet with maximum protection. It helps reduce impact from rocks, dirt and other trail debris, and the shear forces that can lead to blisters and other injuries to the skin and soft tissues of your feet during a trail run. Made of made with our exclusive THORLON yarn and THOR•WICK® COOL fiber, Thorlos also wicks moisture away better, further protecting against blisters and other foot conditions that could interfere with your comfort and enjoyment.

“Used these with new hiking boots in August. No blisters!” Linda J.

Clinically-Tested Padding

Thorlos clinically-tested padded trail running socks are recommended if you experience foot pain or want to help prevent any foot conditions during or after running. The padding is placed precisely where your foot needs protection, and has been clinically shown to reduce blisters, pain, pressures and moisture:

Ball and heel padding: Protects the ball of the foot from the shearing and impact forces that occur while running on rough terrain. 

Toe padding: Protects against banging of the toes in the front of your trail running shoe when you’re going downhill.

“They are extremely comfortable and provide the necessary support in all of the right spots of your feet. Amazing is all I can say and is the reason I bought more and will continue to buy more as long as Thorlo continues to offer them.” Eric P.

Curious but not yet convinced whether Thorlos CTPS can help you address your foot pain? We invite you to try your first pair free…just paying shipping and handling.

Click this link to see our FIRST PAIR FREE OFFER.

Thorlos Lite Padded Socks

If your feet don’t hurt during or after trail running, we recommend our Experia® brand, which provides more protection and comfort than other thin socks on the market. Experia comes in 12 colors and offers lightweight protection with an aerodynamic fit.

30-Day Guarantee Brand Promise

Our promise to you: Your feet will feel better or your money back®!

“The cushion is great for trail running. Cheaper socks just do not protect the feet on rough dirt trails like Thorlo socks do.”  Ken O.

Reviews for Thorlos TRAIL RUNNING

  • 5 out of 5

    Style: XCCU

    Best socks for all tennis shoes!

    06/27/16 | By

    These socks are the most comfortable I've ever worn. They're cushiony yet not too thick, so they can go with any type of tennis shoe.

  • 5 out of 5

    Style: XCXU

    Two Week Hiking Trip

    06/24/16 | By

    I purchased 3 pairs of the XCXU Experia sock for my Badlands, Rushmore, YellowStone, Tetons hiking trip. I wore the socks multiple times over the course of 2 weeks letting them dry out every evening. No blisters, no hot spots total comfort! The socks held up very well without washing and just rotating them every day. Each pair of socks has probably 50 miles on them and they still look good.

  • 5 out of 5

    Style: TRMX

    A lot of padding for my neuropathy

    06/22/16 | By

    Can stay on my feet a lot longer very comfortable

  • 5 out of 5

    Style: XCCU

    Use for biking and pickleball.

    06/20/16 | By

    fit like a glove. No slipping.

  • 5 out of 5

    Style: XCCU

    So comfortable for golf.

    06/18/16 | By

    My feet are properly cushioned for 18+ holes of golf.

  • 5 out of 5

    Style: XWXU

    Hold up to very rugged hiking!

    06/17/16 | By

    My feet are the only thing that don't hurt on my body when I'm on my extreme hiking trips! These socks are a must for any and every activity that require using your feet! If you don't own these socks, you NEED to...NOW!!

  • 5 out of 5

    Style: XCCU

    Best socks ever!!!

    06/16/16 | By


  • 5 out of 5

    Style: XWCU

    Great support for soles!

    06/16/16 | By

    Feels like walking on cushion!! Great for walking all day!

  • 5 out of 5

    Style: XCCU

    Good sock well padded

    06/15/16 | By

    All the Thorlo I've had were well made and lasted. I don't expect these to be any different.

  • 5 out of 5

    Style: XCCU

    Spring/Summer socks

    06/11/16 | By

    Tried these socks last year. They are perfect for walking and running during the warmer months. This year I took advantage of the buy 3 get 1 free deal. I ordered two sets and was very pleased with them. Because there are so many colors to choose from it's difficult to decide which color to pick. An option of a "Surprise Me" box on the order screen would be nice. It would allow the packing person to toss in a sock of a different color. If the box were not checked the socks would all be the same color. " I like surprises" In any case I love Thorlo socks.