2025 Chronobiology Gordon Research Conference and Gordon Research Seminar - Project Summary We request partial support for the 23rd Chronobiology Gordon Research Conference (GRC) and the associated 6th Gordon Research Seminar (GRS) “Circadian Clock Dynamics and Physiology Across Biological Scales”. The 23rd Chronobiology Gordon Research Conference (GRC) and the associated 6th Gordon Research Seminar (GRS) will take place from July 5 to 11, 2025 at the Rey Don Jaime Grand Hotel in Castelldefels, Barcelona, Spain. The theme of the 2025 GRC meeting, “Circadian Clock Dynamics and Physiology Across Biological Scales”, reflects the breadth of chronobiology across the domains of life and its integration with physiology, metabolic health, neuroscience, mental health, sleep and aging, areas falling within the core missions of NINDS. The GRS will focus on training and mentorship, while the GRC will present the latest unpublished work from both senior and emerging stars of the field. Apart from mentorship activities, the GRS will feature 20 trainee speakers, one of whom will be promoted to give a short talk at the GRC along with other 20 scientists selected from abstracts, providing a valuable learning experience for the trainees and early career scientists. Members of our Diversity Committee will help select the “late-breaking” talks, as well as shaping our recruitment efforts and our program. A new “Chronobiology Network Program” will offer funding to trainees from underrepresented groups selected for their potential to help transform our field. Program members will meet with two mentors in the field during the meeting, will assist with the Power Hour, and will be integrated into a small but diverse network of previous recipients of URM-directed fellowships in chronobiology (e.g., Carl Storm Underrepresented Minority Fellowship, GRC).