Ashmeade has won a total of five medals representing Jamaica at the IAAF World Relays. The most recent being at the 2017 edition of the event in which he won a bronze medal in the 4 × 200 m relay. At the 2014 edition, Ashmeade won two gold medals in the 4 × 100 m relay and the 4 × 200 m relay running the first and second leg respectively. At the 2015 edition Ashmeade won a gold and silver. The gold was won in the 4 × 200 m relay whilst running the first leg and the silver was won in the 4 × 100 m relay running the third leg.