Roka Sports Inc., best known for its performance eyewear,  announce its first Strava Challenge, the Roka Dirty 30.

The Roka Dirty 30 challenge is a global event for cyclists to log 30 miles in 2 weeks from December 7-20 on Strava . Those logging 30 miles earn a $50/€50/£50 voucher on any order of $125/€125/£125 or more at Roka.com, eu.Roka.com, and uk.Roka.com.

They’ll also earn the inaugural Dirty 30 digital badge and a chance to win a pair of Roka’s Advanced Performance Eyewear, the same ultralight shades worn by Dan Martin en route to a stage win and a top 10 finish at this year’s Tour de France, and by eight-time triathlon world champion and Olympic silver medalist, Javier Gómez Noya.

There is no cost for participants to join.Visit Roka Dirty 30 challenge page on Strava to join. If you don’t already have a Strava account, you’ll be taken to the app store (or www.strava.com) where you can download the Strava app and sign up for free.