[2] Participating in the 2004 Summer Olympics, he was disqualified from his 100 metres heat due to a false start, thus failing to make it through to the second round.

[3] Marc Burns placed second in the men's 100 metres dash at the Bislett Games IAAF Golden League meet in Oslo in July 2005, in preparation for the 2005 World Championships in Athletics.

At the 2005 World Championships he won (together with Kevon Pierre, Jacey Harper and Darrel Brown) a silver medal.

[2] In 2022, Burns and his teammates received the gold medal due to Jamaica's Nesta Carter testing positive for the prohibited substance methylhexaneamine.

[5] At the 2012 Summer Olympics, he was part of the Trinidad and Tobago team that won the silver medal in the men's 4 × 100 m relay.