"I feel good and I feel the most confident I've ever felt and definitely the most fit I've ever been," Mackay said. "So I'm mostly very excited. I think it's just going to be such a great opportunity and a great experience. And at the end of the day, I think I have a serious shot to make this team. So I'm definitely feeling the pressure from that a little bit."

Mackay will race in the women's 1500-meter dash needing to finish in the top seven of her heat or have one of the next five fastest times to advance to Friday's semifinal.

Mackay was the bronze medalist in the 1500 race at the World Indoor Championships this year and ran a sub-four minute mark back on May 26th, currently holding the sixth-fastest time in the event ran by a US woman this season. Mackay spoke about her Southern Tier background on how it's helped her professional career.

"I've had so many people support me and help me out throughout my entire running career since high school," Mackay said. "And some of those people are still around. Some of the people who I was working with in high school, I also got to work with in college, and even when I go home to visit, I see the same people for massage, CHIRO all those things. So yeah, I just I really love our community and it makes me so proud to represent that area."

Mackay will race at 8:23 in the 1500 at the University of Oregon on Thursday, if she advances, the semifinal is on Friday at the same time! 

Mackay was a five-time All-American as a Bearcat and set the Section IV record in the 1500 and 3000 in high school.

Her former teammate, Eric Holt will also be competing at the Trials in the men's 800. Holt has showcased a breakout season and says respect from his peers has skyrocketed in the last year.