After finishing in Central Park on Sunday, participants in the New York City Triathlon will huddle around the results pages, analyzing split times and category rankings.

Chris Mosier, 31, will not be among them.

Mosier is transgendered and will be competing in the triathlon for the first time as a man. In 2009, he completed the 1.1-mile swim, 25-mile bike and 6.1-mile run in 2 hours 39 minutes, good enough for 27th place in the women’s 25-29 category. Now racing in the men’s 30-34 field, one of the most competitive in the race, Mosier says he will be lucky to finish in the middle of the pack. Instead of focusing on results, Mosier said, he just wants to enjoy racing his peers.

“Until recently I still was holding on to that idea of finishing in a very high place in my category,” Mosier said. “Now I don’t expect to finish as high. I just want to enjoy being comfortable in the race.”

The tradeoff is small for Mosier, who says he has struggled with his gender identity since he was 4 years old. Mosier said he was picked on in high school and college for adopting an androgynous appearance. In 2010, after years of contemplation, he legally changed his documentation to male and started receiving testosterone injections.