SAINT-DENIS, France — A runaway win in one relay and another that was oh-so-close. A long-awaited celebration for France and a high jump competition that felt like it would never end. What tied it all together on a frantic final day of Olympic track and field at the Stade de France was the most familiar sight of all: Americans on the medal stand, over and over again. [time-brightcove not-tgx=”true”] Sydney McLaughlin-Levrone and Gabby Thomas brought the curtain down on track by romping to a win in the women’s 4×400 relay Saturday for America’s 34th overall medal at the track and 14th gold.