First competing in 1979, she has participated, and triumphed, in long-track events during the Canada Winter Games that year, winning gold in the 500-metre, 1000-metre and 1500-metre competitions.

A pair of operations in 1985 and 1987, aimed at relieving the pain in her knees, led her to re-direct her career.

There, Sylvie won the gold medal in the 3000-metre relay, but finished in 18th place in the 500-metre after a collision with American skater Cathy Turner during the preliminary round.

Following the Albertville Games, she started medical studies at the Université de Montréal, but suspended it to resume her training, with the goal of participating in the 1994 Winter Olympics in Lillehammer.

Daigle left the world of skating following the Lillehammer Games in order to finish her studies, obtaining a medical degree from the Université de Montréal in 1998.