Witnessing the exact moment two athletes hit their absolute *rock bottom* on a seemingly impossible challenge. Michael Coates and Nathan Jones endured a brutal 17-hour, 26.2-mile marathon swim down the freezing River Thames—ten degrees of water from morning till midnight! Even in the deepest darkness, the execution was described as perfectly consistent. Pure mental fortitude on display from these open water warriors and their amazing support team! #MarathonSwim #ExtremeEndurance #RiverThames #Co