A History of Athleticism

Grace was named to US Biathlon's Senior National Team in April of 2024  after two seasons of racing World Cup and IBU Cup for Team USA. In 2025 she was named to the World Cup team. She is, additionally, a professional athlete for  The Green Racing Project in Craftsbury, Vermont. 

Castonguay graduated from Kennett High School in North Conway , NH, where she helped bring the Nordic Eagles to a State Championship. She is a graduate of  Saint Michael's College where she studied Economics and competed in Division 1 college racing in the Eastern Intercollegiate Ski Association for SMC Nordic's Purple Knights while also racing on IBU Cup and World Cup for US Biathlon. She set several nordic ski records for SMC and graduated Magna Cum Laude. While at Saint Michael's she trained for biathlon at Ethan Allen Biathlon in Jericho, Vermont under coach Sarah Lehto.

She is the daughter of Ted and Lynne Castonguay with a younger brother, Theo, who is also a very notable biathlete at the junior level and a collegiate skier.  Castonguay's mom, Lynne was her first High School Coach, creating a team for she and her brother's former high school where there was none, so Theo could continue to compete in Nordic Skiing when he became a freshman. Dad, Ted, was very  influential on snow, though both parents had an alpine, rather than nordic, background. A highly achieved varsity cross country and track runner in high school, Grace reluctantly, joined her younger brother Theo in nordic skiing during her junior year of high school and immediately fell in love with the sport; later she joined him  in biathlon when she was a freshman in college. Naturally athletic, hard working, dedicated and passionate she has found great satisfaction and success in these sports. 

From Jackson, a small town nestled in New Hampshire's White Mountains, Grace grew up hiking and backpacking NH's 4000 footers and alpine and backcountry skiing as well. She was an avid soccer player in her childhood as well as a cross country runner; she competed in Junior Olympic XC in her youth. Grace has true Grit: athletic, hard working, dedicated and passionate she has found great satisfaction and success in these sports. 

In her spare time, Grace enjoys rock climbing, mountain biking, mountain trail running, sailing, knitting, and playing cribbage. 

World Championships Experience

• 2023 Junior World Championships (Shchuchinsk, KAZ): 19th in mixed relay / 54th in individual / 13th in women's relay / 40th in sprint / 33rd in pursuit

Career Highlights

• November 2024 Named to USBA World Cup team
• April 2024: Named to the 2024-25 USBA Senior National Team 
• 2023/24  IBU World Cup 74th place in sprint (Lenzerheide, Switzerland)
• 2023/24  IBU World Cup 86th place in sprint (Hochfilzen, Austria)
• 2023/2024 IBU Cup Martell, Italy 48th 12.5 KM short individual; 47th 7.5 KM sprint; 42nd 10 KM pursuit 
• 2022/2023 IBU Open European Championships (Lenzerheide, Switzerland): 74th in individual; 84th in sprint; 15th in mixed relay
• 2022/23 U.S. Senior IBU Cup Trials (Craftsbury, VT): 1st in sprint

Junior World Championships, Shchuchinsk Kazahstan 2023

• 33rd place in the 10k pursuit – 1,1,0,1 
• 27th fastest pursuit time
• 40th place in the 7.5k sprint – 1,2
• 29th fastest ski time
• 54th place in the 12.5k individual – 3,3,1,2
• 13th place in Women’s 4x6km Relay

US Biathlon Profile

https://www.usbiathlon.org/profiles/grace-castonguay

IBU Stats Page

https://www.biathlonworld.com/athlete/castonguay-grace/BTUSA21110200101?tab=overview

Most Notable NCAA Division1 EISA Collegiate Nordic:

• 2023-24 Captain
• 2022-23 10th place in 5k skate at Williams Carnival
• 2022-23 Captain
• 2022 28th place in 5k classic at Middlebury Carnival
• 2022 27th place in skate sprint UVM Carnival 
• 2021-22 D2 ADA Academic Achievement Award
• 2021-22 Led team 11 times
• 2021-22 Appeared in 11 races at 6 carnivals
• 2021-22 Top 30 finishes: 2
• 2021-22 Best classic placement: 28th at Middlebury Carnival on Feb. 18 (5K)
• 2021-22 Best freestyle placement: 27th at UVM Carnival on Feb. 4 (Sprint)

SMC Profile

https://smcathletics.com/sports/skiing/roster/grace-castonguay/8124

EISA Results

https://www.eisaskiing.org/blank-page-1