Many runners experience the 'Sunday Scaries,' a common feeling of stress and nervousness the night before a long run, often manifesting as stomach discomfort or anxiety. This pre-run anxiety can affect runners regardless of experience, especially when preparing for runs between eight and eighteen miles. To alleviate these feelings, preparation is key. Confirming all race or run-day essentials the night before helps reduce uncertainty. Adopting a calming evening routine—such as gentle stretching, meditation, or light reading—can soothe the mind. Additionally, nutrition plays a critical role; opting for easily digestible meals and adequate hydration supports digestive comfort and energy levels. Physical readiness also includes tapering intensity in the days leading to the long run to conserve energy. Mental strategies, including visualization of the run and positive affirmations, help reframe nervousness into motivation. Finally, understanding that some nervousness is normal and shared by many runners can foster a sense of community and support. By implementing these approaches, runners can manage the Sunday Scaries more effectively, enabling a more enjoyable and successful long-run experience.