Mona Vespa


Mona, the President of GO! St. Louis, was the very first person hired by our founder, Nancy Lieberman. She is our fearless leader and token early bird (and we mean early). Starting out as an intern while an undergraduate at Washington University, Mona has worked in almost every capacity for the organization. She took a short break from GO! St. Louis to travel with her husband, Drew and work as a Childcare & Program Director for two YMCAs doing youth program management and development. Since returning to the Lou, Mona has been the organizational and logistical mastermind behind the youth programs, volunteer program, health and fitness expo and many other race day operations. The only thing Mona appreciates more than a good cup of coffee is a good cup of coffee from a local coffee shop. Mona can often be found running the streets of St. Louis, local trails or after her three children, Cecelia, Samuel and Patrick.

E-mail Mona at:

Kristin Werner

Operations Manager

Kristin helps manage the GO! St. Louis Read, Right & Run Marathon and keeps the office in order.  While the non-profit world is new to Kristin, GO! St. Louis is not.  Kristin spent several years as a dedicated volunteer (and runner) at many events before she took on this role.  She’s been running since 2010 after a visit to the GO! Expo and you can now find her running all over town most likely in a sparkle skirt as she has one in every color!  When she’s not running, Kristin enjoys binge watching shows on Netflix – especially old episodes of Friends and Parks and Recreation.

E-mail Kristin at:

Karen Lester

Operations Coordinator

Every team has to have a jack of all trades, right? Well, Karen fits that description perfectly! With 35 years of work at the United States Postal Service and armed with a bachelor’s degree in history and business management, Karen is ready to tackle any task. Karen spends most of her time at GO! St. Louis coordinating the Health and Fitness Expo and keeping the office running on time. Karen also is the proud mother of Parker, the official GO! St. Louis office therapy kitten.

Karen Martinez

Art & Media Manager

Karen, the artist behind the look of GO! St. Louis has been with the organization for over half a decade. Before coming to GO! St. Louis she worked as a freelance designer for a variety of businesses and organizations. As a certified yoga instructor Karen helps to keep the office centered and limber. Karen resides in St. Louis with her husband Ray and her daughters, Grace and Sylvia.

Nancy Lieberman


Nancy is the founder of GO! St. Louis, which began in 2000. In her 16 years leading the organization, she grew the nonprofit from a single marathon weekend to an organization that is a year-round community wellness leader. Nancy has created innovative programs and events that have received national acclaim while inspiring thousands of people to get fit. Programs such as GO! St. Louis Read, Right & Run Marathon®, Middle School Milers and Students on the GO! continue to support the organization’s overall mission.