Even in retirement, Usain Bolt is quick on his feet — whether in new business ventures or, well, literally. While wearing sweatpants and just casual sneakers, the retired eight-time Olympic gold ...

Wellesley Bolt, the father of Olympic sprinter Usain Bolt, has died at the age of 68 after a lengthy illness, according to multiple Jamaican news outlets.

The acceleration (measured in meters/second^2) of Usain Bolt (left) and Dilophosaurus (right) during the 100-meter race. Journalists may use this image only with appropriate credit.

Bolt celebrated with his father (left) after winning gold in the 100m at the World Athletics Championships in 2015 (Getty Images) Usain Bolt was said to be close to his father, who frequently ...