500 Down -- 500 Up

No gym for me, I work out in the forested oasis of the Escarpment!  Today's challenge: running (or walking) up and down the 498 steps of Hamilton's Wentworth Stairs!  

 @EscarpmentBR deceptively pretty view of the#HamOnt Wentworth stairs from the top 4:27 PM - 22 Jan 12  (LEFT) | @EscarpmentBR and the daunting view of#HamOnt 's Wentworth stairs once you reach the bottom  4:28 PM - 22 Jan 12  (RIGHT)

What do I listen to while exercising in the great outdoors? Podrunner BPM Workout Mixes