In her second year the Clarkson Golden Knights women's ice hockey team made history by winning their schools first NCAA Championship. In the process, the team also became the first team from outside the WCHA to win the women's National Collegiate national championship. In her senior year she lived up to her surname by scoring the quickest goal in NCAA Tournament history, just 10 seconds in for the game-winner against Quinnipiac in the NCAA quarterfinal game. Renata Fast served as an assistant captain in her Junior and Senior years. Recipient of Clarkson's Booster Club's Unsung Hero Award, which is presented to the player who always puts the team first and serves as an excellent role model to her teammates and the community.
Hockey Canada
Selected for the Hockey Canada's National Women's Development Team 2014 and 2015 for the three-game series vs. the United States' Women's Under-22 National Team, played during August in Calgary and Lake Placid She was a member of Canada's National Women's Development Team that won a gold medal at the 2015 Nations Cup. She was a member of Canada's National Women's Development Team that won a silver medal at the 2017 Nations Cup in Germany. She made her debut with the Canada women's national ice hockey team at the 2015 4 Nations Cup, held from November 4–8 in Sundsvall, Sweden. Where they placed silver. She represented the Canada women's national ice hockey team at the same tournament in 2016, the 4 Nations Cup in Vierumäki, Finland, Nov. 1–5. She competed in the 2017 IIHF Women's World Championship in Plymouth, Michigan, losing in overtime to the United States. She was selected for the 2017/2018 centralization roster in preparation for the 2018 Olympic Games to take place from February 9 to 25, 2018 in Pyeongchang County, South Korea. She was named to the 2018 Olympic Games Canada women's national ice hockey team competing in Pyeongchang County, South Korea where she wore. The Canada women's national ice hockey team earned a silver medal at the 2018 Olympic Games in a shootout.
CWHL
She was selected second overall by the Toronto Furies in the 2016 CWHL Draft. Fast's first season of play saw her appear in 22 of the Furies 24 games. She would put forth four goals and five assists in those games and finished the regular season as a plus five for plus/minus. Fast was a finalist for the CWHL's Rookie of the Year and was named a 2016–17 all star.
Awards and honours
NCAA
2012–2016 – ECAC Hockey All-Academic team
2012/13 – Named twice to ECAC Hockey Weekly Honor Roll
2013/14 – Frozen Four All-Tournament team
2014/15 – First-Team ECAC Hockey All-Star
2015/16 – ECAC Hockey Weekly Honor Roll
2015/16 – Clarkson's Booster Club's Unsung Hero Award
2015/16 – Third-Team ECAC Hockey All-Star
2015/16 – Nominee for ECAC Hockey's Student-Athlete of the Year
