Marathon Training: The Hidden Risks to Relationships Revealed

Training for endurance events like marathons and triathlons offers numerous physical and mental health benefits. However, recent findings highlight potential unintended consequences, particularly concerning personal relationships. According to counsellors, a phenomenon known as “divorce by marathon or triathlon” is becoming increasingly common, suggesting that the dedication required for these events can strain marriages and partnerships.

A study conducted by researchers at Trinity College Dublin indicates that, contrary to the expected “runner’s high,” individuals who frequently engage in marathons may experience higher levels of anxiety and depression than the general population. This emotional toll can adversely affect their work, social interactions, and family dynamics.

The UK is currently experiencing a surge in interest in endurance sports. Nearly 870,000 applications were submitted for the 2026 TCS London Marathon, while the British Triathlon Organisation reports that over 200,000 individuals participate in triathlons each year. For many, completing a single event is just the beginning—a trend that raises concerns about the psychological impact of such rigorous training regimens.

As endurance events gain popularity, it is crucial to recognize the potential ramifications on mental health and relationships. While many participants embrace the physical challenges, counsellors urge them to consider the emotional costs involved. Intense training can lead to increased irritability, mood swings, and a withdrawal from social connections, all of which can create distance between partners.

The phenomenon of “divorce by marathon” highlights the delicate balance between personal goals and relationship health. Couples may find themselves navigating the challenges of one partner’s training schedule, which can lead to feelings of neglect or resentment. The intense commitment to running or cycling often requires significant time and energy, potentially sidelining shared activities and quality time that are vital for maintaining strong relationships.

Addressing these issues involves open communication between partners about the demands of training and its impact on their lives together. Counsellors suggest that couples engage in discussions about expectations and find ways to support each other’s goals while also prioritizing their relationship.

In conclusion, while participating in marathons and triathlons can enhance physical fitness and mental resilience, the emotional repercussions should not be overlooked. As endurance events continue to attract more participants, understanding the potential effects on personal relationships will be essential for fostering both individual and collective well-being.