Competing on the spectacular hand cut ice on the natural St Moritz track, athletes had a difficult week with lots of snow falling, making training difficult ahead of the competition days.
In the monobob event on Saturday, Walker finished in seventh place, 1.03 second behind the event winner, Kaillie Humphries of the USA, with Laura Nolte of Germany in second and Martina Fontanive of Switzerland in third.
On Sunday Walker teamed up with breakwoman Sarah Blizzard in the two-woman event, finishing in ninth place, their fourth top-10 of the season.
Taking the win was the German pair of Stephanie Schneider/Leonie Fiebig, with Americans Elana Meyers Taylor/Sylvia Hoffman in second place, with the Swiss team of Melanie Hasler/Irina Strebel in third.
The World Cup tour will now head to Konigssee, Germany, for a monobob event on January 23 and bobsleigh on January 24.
IMAGE: Bree Walker and Sarah Blizzard on the scenic St Moritz track © Rekords