The Relentless Series with Usain Bolt (2016) (tv show): Usain Bolt has always lived life at full speed. We know he holds countless records, but it's his attitude that sets Usain apart. The Relentless Series provides a personal look at the one of the world's greatest athletes. Discover the latest Discussions, Reviews, Quotes, Theories, Explanations and Analysis of The Relentless Series with Usain Bolt (2016) below