I personally like imaging that I'm in a fandom of mine to motivate me to run. Example, I pretend I'm the Doctor's companion and we're being chased by Weeping Angels! XD If I'm not in the mood for that, I default to blood pumping music. Terrible as this may sound to people who can't stand today's boy's bands, "Elevate" by Big Time Rush is SUPER motivational. Very fun and energetic! And their constantly saying, "Elevate" in my ear buds is like a personal challenge to step up my game. ;P
"Music" by Manic Drive is a pretty kick a** song, as well (and if you're an aspiring musician who is absolutely passionate about, you might enjoy that song, also).