Our Coaches

La Luz Trail Picture

Michelle Buller

Organizer - Half Marathon

As organizer and half marathon coach, I’m heading towards my fifth year of running with USA FIT RIO. I began in 2011, with the goal of being able to finish a 5K without the thoughts that plague most beginners, like: “I’m not going to make it” or “I should quit”, and over the span of a few short years I have grown from runner to organizer. I can now proudly say that I have met goals I never imagined possible, and have completed not only 5Ks, but 10Ks too!How did I do it? With the encouragement and training of my coaches and fellow USA Fit Rio runners! I’m not the fastest runner, but I have a passion for running, health, fitness, and I still have a goal to start, finish and participate in several more half marathons. Aside from being organizer, I’m currently TRX level 1 certified, and I absolutely LOVE my run group – I consider them family. I love seeing the faces of excitement and hearing the stories from people in our group when they have reached a distance or speed they’ve been working toward. Nothing is impossible when you try. Let’s cross that finish line!


Amy Hartz

Head Coach - Half Marathon

My name is Amy, and I have always been a runner. My obsession with it came two years ago when I was asked to lead running groups for a parks department back home in Valparaiso, Indiana. Shortly after the start of that program, Sunset Hill Run Club, I became a certified RRCA running coach and began leading Couch to 5K and 10K programs along with Nordic Walking, snowshoeing, and other wellness programs. For the last five years, I have run competitively in all distances up to full marathon. And while I am obsessed with running in general, my love of the outdoors brought me to my true passion: trail running.
I am very excited for this opportunity to share my knowledge and encourage runners of all abilities.


Julianna Baca

Head Coach - 10k

I am Honored and excited to be a part of the USA FIT RIO coaching team because fitness has become a passion of mine. In 2011 I started a weight loss journey, and I have lost 100lbs. I started running with USA FIT RIO in spring 2012 after my first 5K at the Duke City Marathon as a major part of my fitness program. I remember finishing that first 5K, and even though I was not very fast I felt a sense of accomplishment crossing the finish line–a feeling that I still get when I cross the finish line today. Since then I have run several 5Ks, 10Ks and a half marathon. I am NASM Personal Training certified. I am currently certified to teach TABATA BOOTCAMP and have a certificate of completion of AFFA’s Group Fitness Essentials. I look forward to sharing my knowledge, experience and love of fitness in helping you accomplish your running fitness goals.