King's Buildings House (known as KB House) is the student union at King's Buildings, run by Edinburgh University Students' Association. A bar serving hot food and drinks can be found downstairs with a large lounge, along with a student shop and a games room. A full servery can be found upstairs, serving a much wider variety of hot food. The union is also home to a gym, two badminton and two squash courts.
Many of the academic buildings are host to their own cafes, with lower rates for students. These cafes often have large seating areas that can be used for studying, but these must usually be vacated during lunchtime.
The 'KB' 5 Road Race is organised every year by the Edinburgh University Hare and Hounds Running Club. It is usually held in late February or early March. The race starts and finishes inside the Kings Buildings campus. The course consists of a 5 mile road loop around the leafy streets of south Edinburgh, with quite a few hills, though none of them steep. The race is popular amongst students and local club runners and usually attracts around 250 participants.