Nicole Kalogeropoulos Bitter

About

Nicole Kalogeropoulos Bitter is an American ultrarunner and attorney from Austin, Texas who grew up in suburban Chicago and discovered competitive running in seventh grade — encouraged by a gym teacher toward cross country — before racing through high school and at Northwestern University. She found trail running at Baylor University Law School in Texas, where the trails around campus drew her away from roads permanently. Relocating to Dallas after graduating and joining the White Rock Co-op running group around 2012, she rose rapidly to the top of American ultrarunning: a three-time winner of the Rocky Raccoon 100 Mile (2013, 2014, 2015), setting the American trail 100-mile record of 14:22 at the 2015 edition. A two-time USATF 100-mile National Champion, two-time USATF Trail Runner of the Year, and winner of the Black Canyon 100k and the Javelina Jundred (2020), she also placed 13th at UTMB on her 2015 Chamonix debut and has accumulated eight starts at Western States 100 with three top-10 finishes — including seventh in 2019 and a Golden Ticket at Bandera 100k in 2023 (second place, 10:03). She continues to log 60-plus-hour legal work weeks as an attorney at Willis Towers Watson alongside her competitive running, and is married to elite ultrarunner Zach Bitter, who now coaches her. An Altra Elite athlete who moved from Dallas to Austin, Bitter is one of the most enduringly consistent performers in American 100-mile racing across more than a decade of elite competition.

Notable Wins

• — Javelina Jundred results
• — multiple US 100-mile finishes

Race History