Here are three stretches based on a lunge, designed to get your hips open and balanced. Benefit: increased range of motion, yielding a greater stride length. Plus, they feel good. Remember: static stretches should come after a run, not before.
For a full series of postrun lunges, see the “Lunge Series” episode of Sage Yoga Training—you can view it as a slideshow at the podcast archives or on YouTube. And for a book full of routines for practice before and after your workout, please check out The Athlete’s Pocket Guide to Yoga.