The ground is in the village of Whitechurch which about 5 miles north from the city centre.
You're best bet would be to get to the city centre then follow signs for Limerick.
About 2 miles from the city centre you'll get to a big junction with a Dunnes stores on your right(blackpool shopping centre).
Go straight and a couple of hundred yards on you'll see a MacDonalds on your right. Turn right here and you'll go up a steepish short hill to a T junction. Turn left here and you're on the old Mallow Road. about a mile on there should be a signposted right turn to Whitechurch. Its about 3 miles out that road. No more turnoffs I think, haven't been there in a while.
Once you're on the old Mallow road best ask a local to make sure you're in the right neck of the woods.
Bookmarks