Megan Youngren will become the first openly transgender female athlete to compete at the United States Olympic marathon trials.

The 29-year-old will make history on February 29 in Atlanta, where she will compete against 63 women for a spot on the Olympic team to compete at the Summer Games in Tokyo later this year. 

While she is the first openly transgender woman to compete in the marathon trials, she is not the first openly transgender athlete to compete for a spot at the Olympics.  

Last month, Chris Mosier became the first openly transgender male athlete to qualify to compete in the Olympic trials for the men's 50km race walk . 

In 2015, he became the first openly transgender athlete to make a US national men's team while competing in the duathlon and triathlon. He is also the first transgender athlete to be sponsored by Nike.