The Sustainability & Resiliency (S&R) Day will be held in conjunction with the 2025 RREC. The event will be hosted by the American Railway Engineering and Maintenance-of-Way Association (AREMA) and RailTEC at the University of Illinois Urbana-Champaign. The S&R Day will focus on how sustainability and resiliency concepts and best practices can be applied to a broad range of engineering design, maintenance, operations, capital projects, construction, sustainable materials, organizational change activities, etc.