Most workout playlists are primarily made up of pop songs. This makes perfect sense, as these songs usually top out around 128 beats per minute. This is a great speed for shaking your hips, but it's not ideal for moving your feet.
To find faster music for your runs, you need to move beyond the Top 40. This playlist focuses on classic tunes (U2 and Bruce Springsteen), recent rock singles (The Black Keys and Neon Trees), and those rare tracks where pop singers turn things up a notch (Kristinia DeBarge and Michael Jackson).
This running playlist starts at 140 BPM and goes up from there, so you'll keep your speed (and your calorie burn) up.
To find more workout songs, check out the free database at Run Hundred. You can browse by genre, tempo, and era to find more tracks with your ideal BPM.