Transgender Athlete Chris Mosier Competes in 2016 World Duathlon Championship

American Chris Mosier competed in the 2016 International Triathlon Union world duathlon championship Sunday, becoming the first transgender athlete to participate in a world championship.

"It was an amazing experience to see other teammates out there on the course and to have people yelling 'USA' as I went by," Mosier said, per Christina Kahrl of ESPN.com.

Mosier, 35, became the first transgender athlete to qualify for the United States national team while competing among the gender that matches his identity. While the United States' national team rules allowed Mosier to compete, he couldn't actually do so until the International Olympic Committee loosened its restrictions. Previously, Mosier would have been disqualified because of "surgical criteria that [he] did not fulfill," according to Kahrl.

Under the new guidelines, Mosier competed Sunday and finished 142nd out of 433 athletes. He was 26th in his 35-39 age group.    

"I feel great. I had such a good race. I did everything that I wanted to do," Mosier said. "It was an amazing time."

Mosier qualified for the long-course duathlon U.S. team earlier this year, competing in North Carolina, which has come under fire recently for a law some see as discriminatory toward members of the LGBT community.

"I have mixed feelings," Mosier told Cyd Zeigler of SB Nation's Outsports. "It feels great to have made the U.S. National Team while in North Carolina—I earned a spot to represent Team USA in a state with policies that intentionally target transgender people for differential treatment and exposes us to potential violence and harassment."

Mosier will compete in the long-course duathlon world championship in 2017.  

Follow Tyler Conway (@jtylerconway) on Twitter.