Blondin finished with a time of 8:24:01, winning by a narrow margin of .02 seconds ahead of South Korea's Bo-Reum Kim who posted a time of 8:24.03.
The top three in the women's mass start was rounded out with Irene Schouten of the Netherlands, who captured the bronze in front of the home crowd.
The result was sweet for Blondin who showed her happiness with a tweet saying, "mass start podium!!!!," and a picture of her smiling with arms raised on top.
Blondin, in her fifth year of senior international competition, is having a banner year. Today's win gives the Ottawa native her fifth World Cup medal this season where she has earned two golds, one silver and one bronze in the women's mass start, and a bronze in the women's 5,000 metres. She represented Canada at the winter Olympics in Sochi, Russia in February.
Fellow Canadian Kali Christ joined Blondin in the race finishing seventh, 3.75 seconds behind her. She also raced in the women's 1,500 metres event placing 10th.
Christ, from Regina, Sask., is in her fourth season of senior international competition. She also represented Canada at the winter Olympics in Sochi.
In the men's mass start, Canadian Tyler Derraugh finished just off the podium in fourth spot. He was 13.46 seconds behind the winner, Jorrit Bergsma of the Netherlands. Derraugh was joined in the event by fellow Canadian Robert Watson who finished 13th.
Laurent Dubreuil of Levis, Que., came very close to a medal in the men's 500 meters event finishing .06 seconds off the podium in fourth place.
Denny Morrison of Fort St. John, B.C., finished 11th in the men's 1,500 metres event, 2 seconds behind the winner, Jan Szymanski of Poland.