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Business Details
24 Years
experience
Your Trusted Running Store in Acton, MA
Founded in 2002, our running specialty store has dedicated itself to advancing the sport of running while prioritizing injury prevention through data-driven footwear recommendations. With two Massachusetts locations in Acton and Lowell, we combine 22 years of industry expertise with innovative technologies like our proprietary video gait analysis system and Shoe Lab research facility. Our team comprises certified professionals including physical therapists, exercise science specialists, and competitive athletes who collectively analyze over 9,000 gait assessments annually.

We maintain partnerships with local physical therapy offices and high schools to educate both professionals and young athletes about proper footwear biomechanics. Our commitment to community extends through free gait analysis services, summer running camps for youth athletes, and collaborative presentations on shoe technology advancements. This comprehensive approach ensures every customer receives personalized recommendations based on both scientific research and practical experience in running performance.
Services
Video Gait Analysis Running Camps Shoe Technology Presentations T-shirt Printing Race Management Local Delivery Shoe Lab Assessments
Details
  • Year established: 2002
Highlights and features
  • We offer 22 years of specialized running footwear expertise since 2002
  • Our free video gait analysis evaluates over 9,000 runners annually
  • Certified staff includes USATF level 1 coaches and physical therapists
  • We partner with local physical therapy offices for ongoing education
  • Summer running camps combine coaching with biomechanical assessments
Services
Video Gait Analysis
Our free 10-15 minute video gait analysis uses frame-by-frame technology to evaluate walking/running mechanics. Certified staff identify pronation patterns, shoe compatibility, and orthotic effectiveness while providing footwear recommendations that reduce injury risk. This service benefits runners, walkers, and individuals with recurring musculoskeletal pain.
Running Camps
Summer running camps for ages 10-14 combine technical instruction with endurance training. USATF-certified coaches lead sessions covering proper running form, injury prevention, and race strategy. Camp includes daily 1.5-mile runs through local trails and personalized coaching to develop competitive athletes at all skill levels.
Shoe Technology Presentations
We deliver customized presentations about running shoe technology to physical therapy offices and high school athletic programs. Topics include stability vs. neutral shoes, material density, and proper fit techniques. These sessions combine biomechanical research with practical applications for injury prevention and performance optimization.
T-shirt Printing
Custom t-shirt printing services support local running events, team uniforms, and community initiatives. Clients receive design assistance and competitive pricing for bulk orders. This service extends our community engagement through branded merchandise for races and athletic programs.
Shoe Lab Assessments
Our Shoe Lab conducts statistical analysis on running shoe specifications to determine performance characteristics. This research informs staff recommendations by evaluating stack height, material density, and stability features across different brands. The data-driven approach ensures proper footwear matches for individual biomechanics.
People
Mark Coddaire
Owner
With 22 years in the footwear business, Mark founded On Your Marx Running & Fitness in 2002. A USATF level 1 certified coach, he developed youth athletes to national championship levels and created the store's proprietary gait analysis system.
Asher Brownson
Coach
USATF-certified coach and Ironman competitor specializing in triathlon-specific running. Brings expertise in endurance training and youth development to summer running camps while coaching competitive high school athletes in local programs.
Questions
What is Video Gait Analysis?
Our free 10-15 minute assessment evaluates walking/running mechanics using frame-by-frame video to recommend footwear that reduces injury risk.
Do you offer youth running programs?
Yes, our summer running camps for ages 10-14 include technical instruction, endurance training, and personalized coaching from certified professionals.
Can you help with running-related injuries?
Our staff identifies footwear issues contributing to pain through gait analysis and recommends proper shoes to address pronation problems and biomechanical imbalances.
Do you provide educational presentations?
We deliver footwear technology presentations to physical therapy offices and high schools covering stability shoes, proper fit techniques, and injury prevention strategies.
What locations do you serve?
We operate stores in Acton and Lowell, MA with local delivery available to 14 Massachusetts and New Hampshire communities.