final reminder—only 12 hours left for our 30% discount on the barefoot premium annual membership ⏱️🔥 Published 2 weeks ago • 364 plays • Length 0:49 Download video MP4 Download video MP3 Similar videos 3:32 invite your friends to watch hand speed challenge, the back-of-hand challenge 12:27 4:30 marathoner crushes vo2max intervals at 6:30/mile! #marathon #running #marathontraining 9:34 4:30 marathoner smashes vo2max intervals at 6:20/mile! #marathon #running #marathontraining