Hi,
I'd say it varies greatly from person to person based on what you are looking to return too.
Personally, I'm 13 1/2 months out. So far I've only been able to run about a mile before the right hip starts letting me know it's there. I've tried to go longer with a walk/run combination. I took up swimming and started biking to fill in for the time i used to spend running and playing basketball. I've even done a few triathlons but had to mostly walk the run portion. the missed time This past weekend I did a mile on the trails in about 9 minutes and another 3 miles doing a walk/ run combination. Not fast (11:30 pace) but by the time i was done my hip was really throbbing, both on the outside and the inner groin.
I just went back for my annual checkup on Monday. The doctor said the xrays show the cup has a bit of a gap behind it which is the only thing he can think that would cause this. I'm fairly active for my age and relatively thin (6'2" 195lbs) so he said it's not normal that I can't go further. He also doesn't think it will get much better on it's own since most of the soft tissue would have healed by now.
My options are to restrict activity and live with it or go for a revision. I'm most likely going for option #2.
I still have hope that after a revision I will be able to go back to how I was prior to the surgery.