At 23 years old in 2021, Knibb was the youngest woman ever to qualify for the U.S. Olympic Triathlon Team. Today, Knibb trains in Boulder, Colorado. Her coach is Dan Lorang. Knibb was inspired to become a triathlete as a child after she watched her mom, Leslie Knibb, compete in an IRONMAN race and noticed the positive atmosphere. She tried a kids’ race and was hooked on the sport from there, working her way through USA Triathlon’s youth elite and junior elite pipelines. Up to this day, her favorite part of competing in triathlons is the camaraderie within the triathlon community, as well as the challenge of always growing and improving within the sport. In high school, she joined her school’s cross-country team and swam for Nation's Capital Swim Club while continuing to compete in triathlons. She was named the Washington D.C. Gatorade Cross Country Runner of the Year and the D.C. State Athletic Association Runner of the Year in both 2014 and 2015. She was the 2015 and 2016 USA Triathlon Junior Elite national champion, the 2015 ITU Junior World Championships silver medalist, the 2016 and 2017 ITU Junior World Champion and the 2018 Under-23 World Champion— one of just three women ever to capture world titles at both the Junior and U23 levels. She also became the youngest woman to earn a spot on the podium at an ITU World Triathlon Series race in 2017, earning silver in Edmonton, Alberta, Canada.
At 23 years old in 2021, Knibb was the youngest woman ever to qualify for the U.S. Olympic Triathlon Team. Today, Knibb trains in Boulder, Colorado. Her coach is Dan Lorang. Knibb was inspired to become a triathlete as a child after she watched her mom, Leslie Knibb, compete in an IRONMAN race and noticed the positive atmosphere. She tried a kids’ race and was hooked on the sport from there, working her way through USA Triathlon’s youth elite and junior elite pipelines. Up to this day, her favorite part of competing in triathlons is the camaraderie within the triathlon community, as well as the challenge of always growing and improving within the sport. In high school, she joined her school’s cross-country team and swam for Nation's Capital Swim Club while continuing to compete in triathlons. She was named the Washington D.C. Gatorade Cross Country Runner of the Year and the D.C. State Athletic Association Runner of the Year in both 2014 and 2015. She was the 2015 and 2016 USA Triathlon Junior Elite national champion, the 2015 ITU Junior World Championships silver medalist, the 2016 and 2017 ITU Junior World Champion and the 2018 Under-23 World Champion— one of just three women ever to capture world titles at both the Junior and U23 levels. She also became the youngest woman to earn a spot on the podium at an ITU World Triathlon Series race in 2017, earning silver in Edmonton, Alberta, Canada.
Knibb is a 2020 graduate of Cornell, where she ran NCAA track and cross-country for four years while balancing her elite triathlon career. She also joined the Cornell swim team her senior year.
At the 2020 Tokyo Olympic Games, she placed 16th overall in the individual event and earned the silver medal at the debut Mixed Relay event alongside teammates Katie Zaferes, Morgan Pearson and Kevin McDowell.
In addition to short-course triathlon, Knibb also races IRONMAN long-course races. In 2022, Knibb became the youngest woman to ever win the IRONMAN 70.3 World Championship in St. George, Utah. She defended her IRONMAN 70.3 title in 2023. Also in 2023, Knibb made her full IRONMAN debut at the 2023 IRONMAN World Championships in Hawaii where she placed fourth, top among U.S. women.
Knibb competed in her first Time Trial at the 2023 USA Cycling Pro Road National Championships placing 4th. She came back a year later to want the same event in 2024 nominating her to the Paris 2024 Olympic team in an additional sport.
