On August 24, 2025, the 37th Bosphorus Cross-Continental Swimming Race, a prestigious open-water event organized by the Turkish National Olympic Committee, took a tragic turn when 29-year-old Russian swimmer Nikolai Svechnikov vanished during the 6.5-kilometer course from Istanbul’s Asian shore to its European side. With over 2,800 athletes from 81 countries competing in the challenging waters of the Bosphorus Strait, the disappearance of Svechnikov, a professional swimming coach from Moscow, has left the global swimming community in shock.

A heart-wrenching account from a fellow competitor, who witnessed Svechnikov struggling mid-race, has brought the athlete’s family to tears and raised questions about the safety measures in place during the event.
The Bosphorus Cross-Continental Swim, renowned for its demanding conditions, attracts both elite and amateur swimmers to navigate the strong currents and choppy waves that connect the Black Sea to the Sea of Marmara. Svechnikov, who had been swimming since childhood and ran his own swimming school, was participating in the race for the first time. According to security camera footage and a tracking chip worn by participants, he began the race at 10:04 a.m. but never reached the finish line at Kuruçeşme. Turkish authorities, including the Coast Guard and maritime police, launched extensive search operations, deploying dozens of boats and underwater rescue teams across the Kanlıca-Kuruçeşme route. Despite these efforts, no trace of Svechnikov has been found as of August 29, 2025, prompting an investigation by the Istanbul prosecutor’s office.

The most poignant detail emerged from Hayati Şamiloğlu, an amateur swimmer and construction engineer who competed in the race. In a statement shared by Anadolu Agency, Şamiloğlu recounted spotting Svechnikov mid-race, swimming in the wrong direction. “I saw him veering off course and shouted to warn him,” Şamiloğlu said, noting the chaotic currents of the Bosphorus. His warning went unheeded, and Svechnikov disappeared from view.
This revelation devastated Svechnikov’s family, who learned of the account through Russian media outlet RIA Novosti. His relative, Alena, described breaking down in tears, pleading with authorities for video footage or updates, only to be told that search efforts were ongoing. “He was in excellent health, training for months,” she said, rejecting suggestions that fatigue or a cramp could explain his disappearance.
The Turkish National Olympic Committee emphasized that the race adhered to the “highest safety standards,” with 100 vessels, including Coast Guard, police, and emergency service boats, monitoring the course. Organizers noted that the route was scanned after the two-hour race concluded at 12:54 p.m., initially finding no stray swimmers. However, a comparison of participant lists revealed Svechnikov’s absence, triggering immediate action. Despite these measures, some swimmers criticized the event’s oversight, claiming insufficient rescue boats were present, particularly at night.
A friend of Svechnikov, Dmitry Mikhalev, told RT, “The Bosphorus has crazy underwater currents. It’s a vast, unpredictable space.” He recalled a conversation the day before the race, where Svechnikov confidently declared, “I’ll finish, what else would I do?”
The Russian Consulate General in Istanbul has engaged with Turkish authorities, ensuring Svechnikov’s family remains informed. Posts on X reflect the growing concern, with users sharing updates and expressing sympathy for the family’s anguish.
The incident has reignited debates about the risks of open-water races, especially in a strait as treacherous as the Bosphorus, which SwimTrek, a race entry provider, describes as requiring “experience in all sea conditions.” The Turkish Olympic Committee expressed deep sadness, vowing full cooperation with authorities to clarify the incident.
As search efforts enter their sixth day, the swimming community holds its breath, hoping for answers. Svechnikov’s disappearance underscores the unpredictable nature of open-water swimming, where even seasoned athletes face formidable challenges. His family, grappling with Şamiloğlu’s account, clings to hope while mourning the uncertainty. The story has resonated globally, with tributes on X highlighting Svechnikov’s dedication and passion. For now, the Bosphorus keeps its secrets, as authorities and loved ones continue their desperate search for the missing swimmer.