Athlete Bios

Theresa Hailey

Women's Marathon

Qualifying Time: 2:36:40
Qualifying Race: 2022 Bank of America Chicago Marathon

Theresa Hailey
Date of Birth


Age on Race Day


Current Residence

Portland, OR


Deer Park, WA

High School

Gonzaga Prep

Current Affiliation

Littlewing Athletics/Oiselle


Lead Tool Engineer at Boeing

Marathon PB


Social Media
First Trials qualification


Previous Trials


Number of attempts to qualify



University of Portland

Career Highlights
Qualified for the 2020 Trials, ran a PR on a tough course, and placed 77th. Qualified for the 2024 Trials at Chicago after my shortest marathon training cycle (8 weeks!) and ran a 2-minute negative split on that day.
My husband and I live in Portland, OR with our cat, Peppermint.
Greatest Accomplishment
Marrying the best dang guy a girl could find [chef, baker, woodworker, all-around handyman, runner, #1 supporter]
Interesting Story
I've been chasing this goal for 10+ years. I missed the 2016 qualifying time by one second after the standard was changed to 2:45. I then qualified for the 2020 Trials and 2024 Trials on my first attempts. I love the marathon so much. I have completed 14 marathons since 2012 and I hope to complete many more!
Favorite Book

Harry Potter series

Favorite Movie

You've Got Mail

Favorite TV Show/Series

Money Heist

Favorite Song

Ali on the Run podcast

Favorite Post-race Indulgence


Favorite Breakfast

Avocado toast with a fried egg on top

Favorite Motivational Quote
"Keep showing up" - Des Linden
Favorite Running Memory
In December 2021 I ran my first marathon (CIM) since the pandemic started. I had a really strong training cycle, an altitude training stint in Bend with some friends (now training partners/teammates), and I showed up on race day more confident and excited to run a marathon than ever before. I started out conservative and slowly increased my pace and passed people the entire way. At mile 23 I entered the Oiselle Cowbell corner where the cheers were so loud I could feel them pulsing through my body. They knew how well I was running, and I knew it too - I was so filled with joy in that moment. When I approached the finish line, I couldn't believe what I had just done. I ran a 5+ minute PR and was just 33 seconds off of the new Olympic Trials standard for 2024. Memories of this race still bring me joy to this day :)