Using Tap For Beats Per Minute Holocaust of Giants by Rasputina is a sweet 90BPM. Back in a previous life I played the cello, or at least tried to, and Rasputina is a cello band, so I love listening to them. According to Wikipedia the cello has been described as being the instrument that has the closest sound to the male human voice. So this song has a very human almost organic sound that feels good to run to.
Oh and be careful if you're using headphones, the sound in the video is really loud.