“I met Elizabeth as a Group Class Instructor at Equinox and she was just beyond! Later, I started with her as my personal trainer. Her classes are gratifying and super fun. I am the worst athlete on Earth and usually count the minutes for the classes to end. Not for Elizabeth’s though. I forget the time and have no idea how we run over. This is all in addition to her being personable, kind and a good human. I consider myself really lucky to have her as a trainer and know her as a person.”
Sahar Fard
“Elizabeth makes running go from challenging to achievable, and most importantly…fun! Time flies when Elizabeth is your coach; an hour feels like 15 minutes. She puts so much of herself into building a personal connection with you and understanding who you are as a runner. I truly feel that she is on my running journey with me.”
Margaret May Bishtok
"If you're looking for a fitness instructor who truly stands out, Elizabeth is the one you need. She has done the workouts for a bunch of my Sweat for Smiles events. She's not just talented and knowledgeable—she brings a contagious energy to every session that makes you want to push harder and keep coming back for more. Her ability to make workouts feel fun and engaging is unmatched. Whether you're sweating it out during a tough workout or laughing at her witty jokes, Elizabeth keeps the atmosphere light, motivating, and always enjoyable. She's not just another instructor—she’s the best in the business, and you'll feel the difference in every class. Get ready to be challenged, but also to have a blast while doing it!"
Ashley Slaughter, president and Founder of Sweat For Smiles
"I’ve been working weekly with Elizabeth for [8] months now and it’s been great to supplement my running with strength. She’s fun, adaptable and she personalizes my workouts to properly adjust to my race schedule, specific goals and comfort level. She pushes me and programs well rounded workouts that I can take home with me, too!"
Cara S.
"Working with Elizabeth was truly life-changing. From day one, she had a clear plan tailored specifically for me, breaking my workouts into well-thought-out blocks that made progress feel achievable and rewarding. She didn’t just stop at fitness—she pushed me to make better choices with my nutrition, which completely transformed how I felt physically and mentally. Thanks to her guidance, I became a better version of myself—not only stronger and healthier but also more focused and energized in my daily life. This newfound confidence even helped me advance in my career. Elizabeth is such a kind, supportive, and inspiring person who genuinely cares about your journey and growth. She’s not just a trainer; she’s a mentor. I recommend her to anyone, especially women looking for mentorship in fitness and life. Elizabeth has a unique ability to motivate and uplift you while holding you accountable, and I’ll always be grateful for the impact she’s had on my life."
Dr. Tara Poostchi
Elizabeth Tretter is an absolute rockstar of a trainer—part motivator, part drill sergeant, and part magician (because somehow, she makes me enjoy working out). She’s been amazing at helping me bounce back from my shoulder surgery, pushing me just the right amount—enough to make progress but not so much that I start questioning my life choices. She somehow gets me to do things I swore I couldn’t, all while making sure I don’t break myself in the process. If you need someone to whip you into shape without making you hate your life, she’s the one!