Another great exercise for runners is the two-handed kettlebell swing. Below are a couple of videos with variations of this exercise. The main difference between the two is in how much knee flexion used. I personally prefer to minimize the use of knee flexion as seen in the second video. When minimizing knee flexion, more emphasis is placed on the use of the the hips and the posterior chain.
For more information, check out my other kettlebell related posts - http://www.posecoachblog.com/search/label/Kettlebells.