Whether you're hitting the open roads, trails or powering through your indoor training sessions, it's time to push yourself beyond your limits. You'll have 14 days to ride 250 minutes and discover just how you measure up against your fellow cyclists.

But here's the best part: don't let Mother Nature rain on your parade! This challenge is all about adaptability. Rain or Shine, indoors or outdoors, you have the freedom to complete it your way. Remember, it's the small steps that lead to monumental changes, and all this challenge takes is 18 minutes a day. The incredible thing is that once you begin, motivation will become your constant companion. It'll stay with you, pushing you forward, even when the weather is less than ideal, or you're simply not feeling it.

Complete the challenge to earn a 30% discount at Castelli-Cycling.com, an exclusive Castelli Keep It Up digital badge, plus a chance to win one of three (3) Castelli winter kits. Share your rides on Instagram, tagging @CastelliCycling and #CastelliKeepItUp for further opportunities to win.