We report a case of spontaneous, bilateral Achilles rupture in a 33-year-old man with no specific risk factors. The rupture occurred after a heavy impact during a sports activity, and although the rupture was painful, he was able to mobilize slowly. After a clinical examination confirmed the diagnosis, ultrasonography and magnetic resonance imaging evaluation of the Achilles tendons revealed bilateral ruptures. The patient underwent bilateral conservative treatment and subsequently embarked on a comprehensive rehabilitation program with a good functional outcome at follow-up. The patient's return to premorbid work and social life was uneventful. A spontaneous rupture in a patient without any predisposing risk factors is uncommon, and for it to occur bilaterally is notably rare.