Mark Sekelsky   On Your Mark Coaching

I offer online coaching services. While most people select ongoing coaching I do also offer coaching for a specific event. In all cases it starts with a questionnaire so I can learn more about you and your goals, then when possible a phone call as no questionnaire ever answers all of my questions and likely you have some too.

My "sweet spot" is 5k through the marathon although I have coached a couple of people for 50k


I am an RRCA Level II, NAASFP, Training Peaks and Level One Stryd Power Certified Running Coach and of course a runner myself. I am a late starter when it comes to running. I started with race walking, which I still do from time to time, and transitioned to mostly running around 2010. I normally do well in my age group for local races. While it is nice to place what is always more important to me is how did I perform relative to my expectations for the day.

On the personal side I am retired and married with 3 kids (well, adults I guess) and 2 grand kids.


Jacksonville, FL
United States

Preferred Athlete Levels

Beginner, Intermediate, Advanced


Remote Coaching

Sport Types





Jacksonville, FL
United States