Canada's Eric Gillis finished fifth at the Scotiabank Toronto Waterfront Marathon.
The 36-year-old from Antigonish, N.S., crossed in two hours 13 minutes 42.6 seconds to win the Canadian men's title.
Gillis was gunning for Jerome Drayton's 41-year-old Canadian record of 2:10.09.
Kenya's Philemon Rono was first in 2:08:25.4.
Krista DuChene of Brantford, Ont., who made her Olympic debut at the Rio Olympics eight weeks ago, won the women's Canadian title. She finished fifth in the women's race in 2:33:59.4.
Shure Demise of Ethiopia was first in 2:25.15.6.