WOMEN'S ENDORPHIN PRO 4 M Kayano 32 With a half-rim

With a half-rim

Bogart was actually shorter than Bergman

Pulse Ox shows blood oxygen saturation to monitor high-altitude running

Training for your next PR

DISTANCE PER RUN: Long

WOMEN'S ENDORPHIN PRO 4 M Kayano 32 With a half-rimThe Endorphin Pro 4 running shoe is a miraculous feat of engineering: snappy and responsive yet smooth and efficient. Something we achieved by fusing PWRRUN PB and PWRRUN HG together in the midsole an industry first. A full carbon plate adds longitudinal stiffness and maximum metabolic efficiency. And the silky smooth heel liner and integrated tongue system makes this marathon shoe feel like slipping on an old friend come race day. SUPPORT: Neutral