"What Our Gearhead® Experts Are Saying: ""I've put in serious miles with the Endorphin Speed 5, and it’s easily my favorite for tempo days and long runs. That PWRRUN PB foam stays incredibly light and springy, and the nylon plate gives just enough...
"What Our Gearhead® Experts Are Saying: ""I've put in serious miles with the Endorphin Speed 5, and it’s easily my favorite for tempo days and long runs. That PWRRUN PB foam stays incredibly light and springy, and the nylon plate gives just enough...
"What Our Gearhead® Experts Are Saying: ""I've put in serious miles with the Endorphin Speed 5, and it’s easily my favorite for tempo days and long runs. That PWRRUN PB foam stays incredibly light and springy, and the nylon plate gives just enough...