TOKYO (AP) — ​Allyson Felix knows the way to the Olympic medals stand better than any runner alive.

She made her record-setting 11th trip there Saturday, after starring as the headliner on a 4x400 relay win that featured a who's-who of American running.

With the gold medal dangling from her neck and the "Star-Spangled Banner" playing in the near-empty stadium, "I took a moment just to close my eyes and take it in one last time," Felix said.

After the final race of the final Games of the 35-year-old sprinter's career, Felix leaves the stage having won the most medals of any track athlete in U.S...