Adding a jump at the end of each squat will wear you out, and build great leg strength.
One of the most popular lifts out there can benefit runners in a big way.
A slight variation of the lunge will further develop your leg muscles.
This is a great, simple exercise that will work on the explosiveness in your glutes, quads and calf muscles.
Build lateral quad strength and improve your running with this simple bodyweight exercise.
This is a great lower body exercise that will help increase leg strength and back strength.