Andy Lyons/Getty Images for IAAF

Allyson Felix started on the quest for her fifth Olympics, winning her 400m heat in the U.S. Track and Field trials on Friday.

Felix advanced out of the first round, clocking a time of 50.99 seconds. After the race, Felix said, “I feel good, I just want to run smart and keep progressing.”

The Olympic icon will join 15 other runners on Saturday for the 400m semifinals.