Core Insights - The article discusses the potential negative impact of marathon running on personal relationships, particularly marriages, highlighting a phenomenon referred to as "marathon divorce" [1][3]. Group 1: Research Findings - A study conducted by researchers from Trinity College Dublin surveyed 576 middle-aged marathon runners from 22 countries, revealing that while 94% initially believed running marathons was beneficial, 25% exhibited concerning levels of anxiety and depression [3]. - Approximately 8% of the surveyed runners were identified as being at high risk for clinical depression and severe anxiety [3]. - The research emphasizes that marathon running does not guarantee good mental health, as 75% of participants reported feeling better after running, but some may use running as a coping mechanism under stress, leading to burnout and anxiety [3][4]. Group 2: Relationship Dynamics - The article notes that even with partner support, the identity transformation experienced by runners can jeopardize intimate relationships, potentially leading to marital breakdowns [4]. - Training for marathons consumes significant time and energy, affecting sleep and dietary habits, and the emotional lows following races can lead to feelings of sadness [4]. - It is suggested that runners should be cautious of overtraining and exercise dependency, ensuring they maintain the joy of running without it dominating their lives [4].