Heather Moyse and Kaillie Humphries are aiming for another Olympic gold medal in women's bobsleigh in Sochi.

Brakeman Heather Moyse of Summerside, P.E.I. and pilot Kaillie Humphries of Calgary will begin the defence of their Olympic gold medal in Sochi Tuesday.

The Canada 1 sled will run first in heat number one, which is scheduled to start at 11:15 AT. The second heat will run about an hour later.

Moyse and Humphries won the gold medal at the Vancouver 2010 Olympic Winter Games. They also won the World Cup earlier this year, which makes them favourites to be standing on the podium in Sochi.

There will be two heats run on Tuesday, with the final two heats scheduled for Wednesday, starting at 12:15 AT.

You can watch the competition on CBC-TV, or on livestream at