I have a 2009 jku sport my clutch lasted me close to 90k had to replace my throw out bearing. I was pretty heavy on the clutch at time. From offroading. But I've seen them last close to 120k all depends in how ur driving.
We put on over 100,000 miles on our factory clutch and only got rid of it because we ended up getting a new motor. I'm sure we could have gotten a lot more out of it had we kept it.