In 2008 Adams broke the Oceania record in winning her first World Indoor Title in Valencia (20.19 m). At the Beijing Olympics, she qualified for the final with the longest distance thrown, 19.73 meters, on her first attempt. She won the gold with a throw of 20.56 m, a personal best, beating Belarusian thrower Natallia Mikhnevich. It was the first Olympic gold medal in track and field for New Zealand since John Walker won the 1500 meter race in 1976. She also won the New Zealand Sports Award of the year in 2008.