The Mount to Coast Women's R1 isn't your typical running shoe—it's a record-breaking machine wrapped in sustainability. Born from world-record performances, this shoe packs serious tech: ZeroSag midsole cushioning that adapts to any condition, LightCELL foam that's 50% lighter than EVA yet bounces back harder, and GOFLOW geometry that keeps your stride smooth and efficient. The TUNEDFIT Dual Lacing System lets you customize fit across your forefoot and midfoot independently, while a wide toe box gives swollen feet the breathing room they need. Wrapped in soft double-layered jacquard made with 40% recycled polyester and backed by the APMA Seal of Acceptance, the R1 proves you can crush ultramarathons without compromising on performance or the planet. Built for runners who refuse to settle.