At the top of the hill is the TV and radio transmitter station and a telecommunications mast.
The hill is used to host a number of mountain biking events.
Access to the top of the hill by motor vehicles is only via a steep concrete road that leads up to the summit from the village of Bon-y-maen.
The Kilvey Killer is an annual charity endurance race, usually held in August, which involves running up and down Kilvey Hill carrying a sack of cement.
The race was established in 1989 by the former amateur boxing champion and trainer Nigel Page to raise money for a special baby unit for Singleton Hospital, Swansea, which had saved his daughter Kirsty's life after she was born prematurely.