Germany's Florian Wellbrock wins men's marathon swimming at Tokyo Olympics TOKYO -- Florian Wellbrock of Germany added a gold medal in marathon swimming to his bronze at the pool, romping to a dominant win in the men's 10-kilometer race at Tokyo Bay in the Summer Olympics on Thursday. Wellbrock sprinted out to an early lead, was up front most of the way and won by the biggest margin in Olympic marathon swimming history on another sweltering morning in Japan's capital. "Florian was unbeatable today," said Kristof Rasovszky of Hungary, who finished more than 25 seconds behind for the silver. "I tried to be the best of the rest."