Segun and his younger brother Tolu, who also competes with the Gee-Gees track and field team, attended Colonel By Seconday School in Ottawa. Both brothers were members of the double-gold winning uOttawa relay team at the 2012 CIS Track and Field Championships. Segun won this year's OUA gold medal in the 300m, but slipped to 5th at the CIS Championships.
Makinde, who is coached by five-time Olympian Glenroy Gilbert, is already an experienced international competitor. He represented Canada at the Commonwealth Youth Games in 2008, and more recently came fifth in the 200m at the 2011 Summer Universiade in Shenzhen, China last September.
Here [This link is no longer available] is the link to the official results from the Canadian Trials results page where he came 2nd.