2008: Canadian Cross Country Championships, Silver
2008: Competing at the Summer Olympics 10,000m event
2007: Canadian Championships, Bronze
2007: Canadian 10,000m Championships, Gold
2005: Canadian Championships, Bronze
The 2008 Summer Olympics
Gillis went to the Beijing Summer Olympics as a member of Team Canada. He competed in the 10000 metres event on August 17, 2008, in the Beijing National Stadium. Though he was aiming to finish among the top 20, he ended up finished 33rd overall with a time of 29:08.10.