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Smartwool X Rob Krar Ultra Run Challenge

Run 100 miles in April to receive a $25 Smartwool.com gift card.

Challenge Ended: April 30, 2019
Smartwool and pro ultra runner Rob Krar are teaming up to help you go far and feel good this spring. To celebrate their new Smartwool X Rob Krar PhD® Pro Endurance sock, Smartwool is creating a 100-mile run challenge to put you (and your socks) to the test.

Rob is known for his ability to absolutely crush 100-mile ultra races, but he also uses running as a way to support his mental health and as an opportunity to share time outside with friends and family. The last thing Rob wants to think about on a long run are his socks, so he partnered with Smartwool to design the PhD® Pro Endurance: Smartwool's most technical running sock yet, with run-specific features to help keep feet comfortable from mile 1 to mile 100.

And now he's inviting you to join him as he tracks his runs during the month of April. When you complete this 100-mile challenge, you'll earn a $25 gift card to Smartwool.com (valid for US residents only on a $50+ purchase*) to help you stock up on comfortable, breathable Merino wool socks and apparel designed to keep you going for your next 100 miles and more.

Check out https://www.smartwool.com/shop/running-gear to learn more about the PhD® Pro Endurance sock and see Smartwool's full selection of Merino wool running gear.

Sign up for the challenge, join the Smartwool Club on Strava, and get out there. Tag @smartwool and #gofarfeelgood in your running photos on Instagram for a chance to be featured!

*While the $25 gift card is valid for US residents only, Smartwool and Rob welcome global participation in the challenge. See Rules for full details.
  • 52,524
    Participants
  • 4,857,814
    Total Miles Run
Smartwool X Rob Krar Ultra Run Challenge logo