On the track, race pads will last between 600 to 1500 miles ( 5 to 10 track days). Stock pads could only last a couple of days if you push them hard (maybe only 200miles), but they would be fading the whole time....
2011 e92 M3 Monte Carlo Blue ESS 535
2015 cayman GTS
2006 SLK 55 AMG