 It is bridged by the R448 road at Moyleabbey, County Kildare.It meets a tributary in Crookstown and passes under the R415, then flows southward through Ballitore.The Greese flows south-southwest, crossing under the M9, through Kilkea Golf Club and past Kilkea Castle, passing under the Dublin–Waterford railway line at Newtownpilsworth/Dunmanoge and draining into the River Barrow in the Jerusalem townland, Painestown downstream of Maganey Lock (this last stretch forms part of the County Carlow/Kildare border).