Mark found running when he was 30 years old, but he instantly fell in love the sport because of its emphasis on focus and dedication. After serving roles as the Greater Lowell Road Runner club president, race team manager, and race director, Mark decided to start Marx Running & Fitness Center. Mark initially started the business in 2000 as a way to support athletes and give back to the running community. Since then it has transformed into much more than that. Mark has used his knowledge, experience, and passion for running to grow his business alongside with the local community. Mark has forged relationships with local road races, schools, gyms, doctors, physical therapists, and personal trainers, all of whom use Mark as a trusted resource when it comes to all things running/walking. Throughout the years, Marx Running has expanded in scope. As Mark has become an expert on foot pain and foot care, the store, too, has begun to cater to the needs of those in the therapeutic/rehabilitation establishment. He frequently gives seminars in gyms or PT offices on the importance of running/walking in the proper shoe. The Marx Running slogan, “A running store, and so much more…”, was inspired by Mark’s eagerness to not simply be a running store but a respected community resource.



Jackie started running with her dad at a very young age and quickly found success. In middle school she competed at Junior Olympic Cross Country and Track and Field Nationals, and she was one of the top runners in Western Massachusetts throughout high school. She later went on to study at St. Lawrence University where she majored in Mathematics and Economics and competed on the Cross Country and Track and Field teams. One of her career highlights at St. Lawrence was racing at the 2009 NCAA D3 Cross Country National Championships, where her team placed 2nd overall. After college Jackie spent six years teaching high school math and coaching cross country and track and field. Her family owns a local running store in The Berkshires where she grew up, and she often spent summers helping out at the store and with running camps. Jackie quickly felt at home at Marx and has enjoyed furthering her knowledge on running shoe technology and its ability to create efficient, injury free workouts. Jackie continues to run and improve her times, and loves bringing her passion and experience with the sport to Marx Running and Fitness.



Leah, a three-sport athlete in high school, went on to play division 1 Field Hockey in college at the University of Michigan. While at the University of Michigan, Leah was part of two Big-Ten championship teams, with one of those teams continuing on to compete in a Final Four. Leah graduated with her Bachelor’s of Science degree in Movement Science and will be continuing her education in Physical Therapy School this upcoming fall. Leah has a passion in injury prevention as well as the psychological benefits that come along with living a healthy and active lifestyle. Leah emphasizes the importance of having the correct platform and support under your feet/body while participating in any activity. By having the correct shoe technology, you will be able to minimize injury risk and create more efficient workouts, allowing you to better your health and wellness, both mentally and physically.



After noticing he could outrun his teammates in the traditional sports, Bob began running and training on his own in the 7th grade. By 8th grade he was practicing with the local high school XC team and was one of their top guys. He ran XC/Track throughout high school and was recruited to run for East Stroudsburg University in Pennsylvania. While at ESU he was an ECAC Champion in the Indoor 1000 and the XC Team Captain senior year. Bob majored in economics and went on to do market research in the tech industry for 12 years. He then brought his 32 years of running experience to Marx Running where he particularly enjoys interacting with runners and walkers of all different ability levels and experience. Bob can draw from his lifetime of running experience to help customers get the most out of their own running or walking regimens. Bob is happily married with two children, ages 12 and 14.