Matej Toth became the first Slovakian to win a gold medal at the world athletics championships in Beijing on Saturday when he cruised to victory in the men's 50 km race walk.The 32-year-old Toth surged ahead after opening up an early lead in the grueling event to win in a time of three hours, 40 minutes and 32 seconds. Australia's Jared Tallent, the silver medalist at the last two Olympics, finished second. Tallent completed the journey in 3 hours 42 min 17 sec, with Japan's Takayuki Tanii, last year's Asian Games champion, taking the bronze medal in 3 min 42 min 55 sec.