Hi There - After looking at your sketch I felt inspired to create a design that looks like an actual foot print left in the wilderness. This concept works on several levels, first you have a natural looking print that implies "a better animal" actually exists. Also since your concept includes wild animal names this style of design gives it that edge. Second, the natural print is unique - every human has a unique print just like they would have a unique training plan. Third, the imperfections give the design action and movement which works well because your company will be working with runners.
This is fully vectorized and can be modified. We can change any aspect of the design, we can change the shape of the foot, etc.
I hope you like it. I will be online the rest of the day if you need to communicate with me.