2016–2018 In August 2016, at the
Junior Pan Pacific Swimming Championships for the year, Kibler won a gold medal in the 4×100 meter freestyle relay, a silver medal in the 4×200 meter freestyle relay, the bronze medal in the 200 meter freestyle, won the b-final of the 50 meter freestyle, placed second in the b-final of the 100 meter freestyle, and placed nineteenth in the 400 meter freestyle. As part of the 4×200 meter freestyle relay at the
2017 FINA World Junior Swimming Championships, held in
Indianapolis in August, Kibler won a silver medal, swimming the anchor leg of the relay in the preliminaries in a time of 1:48.43. He also initially won a gold medal as part of the 4×100 meter medley relay, swimming backstroke in the final, however the medal was later disqualified due to an anti-doping rule violation by one of his fellow relay teammates. In his non-medaling events, he placed fourth in the 100 meter backstroke with a time of 54.97 seconds, fifteenth in the 100 meter butterfly with a 53.80, and helped achieve a fourth-place finish in the 4×100 meter freestyle relay, splitting a 50.04 for the third leg of the relay in the final after swimming on the prelims relay as well.
2019 2019 NCAA Championships At the
2019 NCAA Championships in
Austin, Texas in March, Kibler set new
NCAA,
American, and
US Open records with relay teammates
Austin Katz, Jeff Newkirk, and
Townley Haas in the 4×200 yard freestyle relay in a time of 6:05.08, leading-off the relay on the first 200-yard stretch with a 1:32.06. He also won the bronze medal in the 200 yard freestyle with a time of 1:31.76, placed ninth in the 50 yard freestyle with a b-final-winning time of 19.15 seconds, and placed sixteenth overall in the 100 yard freestyle with a time of 42.63 seconds in the b-final.
2019 Pan American Games At the
2019 Pan American Games in
Lima,
Peru, Kibler won three medals. In the
4×100 meter freestyle relay on August 6, Kibler won the silver medal with his relay teammates
Michael Chadwick, Grant House, and
Nathan Adrian with a final time of 3:14.94. On August 7, Kibler finished third in the final of the
200 meter freestyle with a time of 1:47.71 and won the bronze medal in the event. Two days later on August 9, Kibler won his third medal, a second silver medal, in the
4×200 meter freestyle relay with relay teammates Grant House, Christopher Wieser, and
Samuel Pomajevich who together swam a final relay time of 7:14.82. In the final of the 100 yard freestyle, he tied for second-place. Later in the same finals session, he anchored the 4×100 yard freestyle relay to a fourth-place finish in 2:48.28, splitting a 41.63. One day earlier, he placed second in the final of the 200 yard freestyle with a personal best time of 1:30.39, finishing less than three-tenths of a second behind first-place finisher
Kieran Smith. The day before that, he achieved a fifth-place finish in the 500 yard freestyle.
2020 US Olympic Trials Kibler qualified for the 2020 Olympic Games in the 4x200 meter freestyle relay by placing third in the 200 meter freestyle final with a time of 1:45.92 at the
2020 US Olympic Trials in
Omaha, Nebraska. In the prelims heats of the 100 meter freestyle, he swam a 48.72 to qualify for the semifinals ranking tenth. For the semifinals, he swam a 49.02, placing 14th and not qualifying for the final. In his third event, the 100 meter butterfly, he placed 23rd in the prelims heats with a time of 53.10 seconds. On the final day of competition, he decided not to swim the 50 meter freestyle.
2020 Summer Olympics In the prelims heats of the
4×200 meter freestyle relay at the
2020 Summer Olympics in
Tokyo, Japan, Kibler swam with relay teammates
Patrick Callan,
Blake Pieroni, and
Andrew Seliskar to finish fifth overall and advance the relay to the final. Following his performance in the prelims, he was selected to swim on the relay in the final along with
Zach Apple, Kieran Smith, and Townley Haas, which made him the only relay member to swim in both the prelims and final of the event. In the final of the event, Kibler helped the relay finish fourth overall. With his competition at the 2020 Olympic Games, he became the first Olympic swimmer representing the United States from
Carmel, Indiana.
2022 Big 12 Championships At the 2022
Big 12 Conference Championships in February 2022, Kibler led-off the 4×200 yard freestyle relay with a 1:32.20, helping win the event with a final time of 6:08.76 that set a new Championships record. For the 50 yard freestyle prelims heats on day two, he swam a time of 19.33 seconds to qualify for the evening final ranked third. He placed third in the final with a time of 19.48 seconds, finishing 0.31 seconds after the first-place finisher. On the third day, Kibler ranked first in the prelims heats of the 200 yard freestyle, swimming a time of 1:32.88. He won the final with a 1:32.64, finishing 0.28 seconds ahead of the second-place finisher. He also led-off the 4×50 yard freestyle relay in 19.42 seconds later in the same session, however the relay was disqualified when the second swimmer registered a negative reaction time for their start. Finishing in 42.38 seconds in the final, Kibler placed third behind two of his University of Texas teammates. Concluding the Championships, he helped the University of Texas 4×100 yard freestyle relay win in a Championships record time of 2:47.59, swimming a 41.80 for the second 100-yard portion of the relay.
2022 NCAA Championships On day one of the
2022 NCAA Championships, Kibler helped break the
American,
US Open, and
NCAA records he helped set in 2019 in the 4×200 yard freestyle relay, lowering his split time from the former records by over 1.50 seconds to a 1:30.54 to help win the event in 6:03.89. In the morning prelims heats on the second day, he qualified for the final of the 50 yard freestyle tied in rank for second with a personal best time of 18.60 seconds. Swimming a 18.87 in the final, he placed sixth overall, finishing 0.31 seconds behind first-place finisher
Brooks Curry. For his second event of the evening, Kibler led-off the 4×50 yard freestyle relay in 18.83 seconds to help achieve a third-place finish in 1:14.41. The third day of competition, he ranked first in the prelims heats of the 200 yard freestyle, qualifying for the final with a time of 1:30.91. In the final, he swam a personal best time of 1:30.28 to win the NCAA title and break the pool record of 1:30.46 set by Townley Haas in 2016, finishing 0.44 seconds ahead of third-place finisher and freshman
Matthew Sates. His win made him the first swimmer from Carmel to win an individual NCAA title in swimming. Equalling his personal best time of 41.45 seconds in the preliminary heats of the 100 yard freestyle on day four, Kibler qualified for the final ranking fifth. In the final of the event, he achieved a personal best time of 41.33 seconds and placed sixth, which was 0.24 seconds off of the podium third-place finish time of 41.09 by
Andrey Minakov. In his final event of the Championships, he led-off the 4×100 yard freestyle relay in 41.58 to a help achieve the NCAA title with a final time of 2:46.03.
Pro Swim Series – San Antonio Less than a week after the 2022 NCAA Championships, Kibler started off with a 1:49.67 in the prelims heats of the 200 meter freestyle on day two of the 2022
Pro Swim Series held in
San Antonio, Texas at
Northside Swim Center, qualifying for the final ranking second. He won the 200 meter freestyle in the final with a time of 1:47.61. The following day, he qualified for the final of the 50 meter freestyle ranking fourth with a time of 22.49 seconds in the prelims heats. In the final, he placed fourth with a personal best time of 22.27 seconds, finishing 0.54 seconds behind first-place finisher
Michael Andrew. Starting of the final day of competition, he swam a 49.46 in the prelims heats of the 100 meter freestyle to qualify for the evening final tied for third in rank with
Ryan Held. In the final, he placed fourth in 49.30 seconds, 0.17 seconds behind third-place finisher Ryan Held.
2022 International Team Trials With a personal best time of 48.28 seconds in the preliminary heats of the 100 meter freestyle on day one of the
2022 US International Team Trials in
Greensboro, North Carolina in late April, Kibler qualified for the evening final ranking third. In the final, he lowered his personal best time again, dropping an additional three-hundredths of a second to finish with a 48.25 in a tie with
Hunter Armstrong for fourth-place. On the second morning, he qualified for the final of the 200 meter freestyle with a time of 1:46.25 and overall rank of second in the prelims heats. In the evening final, he placed second with a personal best time of 1:45.32 and qualified for the
2022 World Aquatics Championships team in the 200 meter freestyle and 4×200 meter freestyle relay. For the prelims heats of the 100 meter butterfly on day three, he ranked ninth and qualified for the b-final in a personal best time of 52.30 seconds. He followed his prelims swim up with a time of 52.39 seconds in the final, placing seventh overall after being bumped up to the a-final. On the fifth and final day, he swam a 22.38 in the prelims heats of the 50 meter freestyle, achieving a rank of twelfth and qualifying for the evening b-final. He decided not to compete in the b-final. His fourth-place finish in the 100 meter freestyle also qualified him for the World Championships team in the 4×100 meter freestyle relay.
2022 World Aquatics Championships Kibler started his competition at the 2022 World Aquatics Championships with his individual event, the
200 meter freestyle, swimming a 1:46.13 in the preliminaries to qualify for the semifinals ranking fifth. In the evening semifinals, he lowered his time to a 1:45.54 and qualified for the final ranking sixth. For the final, he finished just three-hundredths of a second behind
Tom Dean of
Great Britain with a personal best time of 1:45.01 to place fourth. In his second and final event, the
4×200 meter freestyle relay, he led-off the finals relay in 1:45.54 to help win the gold medal in a time of 7:00.24. He won his second medal of the World Championships in the
4×100 meter mixed freestyle relay, splitting a time of 48.26 seconds as part of the prelims relay and helping qualify the relay to the final ranking first before winning a bronze medal for his efforts when the finals relay, on which Brooks Curry substituted in for him, finished third in 3:21.09.
2022 Swimming World Cup Competing at his first
FINA Swimming World Cup in
Toronto,
Canada in October at part of the
2022 FINA Swimming World Cup, Kibler advanced to the final of the 50 meter freestyle on the first day with a personal best time of 21.62 seconds that ranked him sixth across all of the preliminary heats. He slowed it down to a 21.74 in the final, placing eighth. The following morning, he tied Kobe Ndebele of
South Africa for eighteenth-place in the preliminary heats of the 100 meter freestyle with a personal best time of 48.08 seconds, not qualifying for the final. On the morning of the third and final day, he ranked third in the preliminary heats of the 200 meter freestyle with a personal best time of 1:43.78, qualifying for the final. He lowered his personal best time by two-hundredths of a second in the final, placing seventh with a 1:43.76. At his second-ever Swimming World Cup stop, the one held in November 2022 in
Indianapolis, Kibler started off with a personal best time of 3:43.68 in the preliminary heats of the 400 meter freestyle, qualifying for the final ranking fourth. He lowered his personal best time by 3.60 seconds in the final, placing fourth with a 3:40.08. The next morning, he improved upon his personal best time in the 100 meter freestyle from Toronto, swimming a 46.84 and qualifying for the final ranking second. He trimmed another two-hundredths of a second off his personal best time in the final, winning his first medal of the circuit, a bronze medal, with a time of 46.82 seconds that was 1.27 seconds behind gold medalist
Kyle Chalmers of
Australia and 0.55 seconds behind silver medalist
Thomas Ceccon of
Italy. The third morning, he lowered his personal best time in the 200 meter freestyle with a 1:43.14 in the preliminary heats and an overall second-rank, which qualified him for the final. He finished third in the final, less than two-tenths of a second behind gold medalist and fellow American
Kieran Smith, winning the bronze medal with a personal best time of 1:41.93.
2022 World Short Course Championships For the
2022 World Short Course Championships, in mid-December in
Melbourne, Australia, Kibler was named to his first
World Short Course Championships roster, with a spot in each the 100 meter freestyle and the 200 meter freestyle. Day one of competition, he achieved the fastest split time amongst the American prelims relay swimmers in the
4×100 meter freestyle relay with a 45.91 for the second leg, helping qualify the relay to the final ranking third. He won his first medal at a World Short Course Championships in the final, leading-off the relay with a 46.84 to help win the bronze medal in 3:05.09. The following morning, he placed seventeenth in the
100 meter freestyle with a time of 47.05 seconds. Swimming under 21 seconds for the second leg of the
4×50 meter freestyle relay in the preliminaries on day three, Kibler helped qualify the relay to the final ranking second with a 1:24.07. Increasing his time to a 21.10 for the anchor leg of the relay in the final, he contributed to a final mark of 1:24.03 and overall fifth-place. Starting off fresh on day four, he anchored the
4×200 meter freestyle relay with a 1:41.97 in the preliminaries to help qualify the relay to the final ranking first in 6:53.63. On the finals relay, he lowered his anchor split time to a 1:41.16, helping win the gold medal in a
world record-setting time of 6:44.12. In the preliminaries of the
200 metre freestyle, his second of two individual events, on day six of six, he qualified for the final ranking fourth with a personal best time of 1:41.88. In the second senior World Championships final of his career in an individual event, following the final of the 200 meter freestyle at the long course 2022 World Aquatics Championship, he placed fourth again, same as at the 2022 long course World Championships, this time with a personal best of 1:41.44, which was 1.72 seconds behind gold medalist
Hwang Sun-woo of
South Korea.
2023 In March 2023, at the long course meters Speedo Sections in Indianapolis, Kibler won the 50 meter freestyle on day one with a personal best time of 22.23 seconds, the 200 meter freestyle on day two with a 1:45.82, the 400 meter freestyle on day three with a personal best time of 3:52.25, and the 100 meter freestyle on day four with a 48.89. ==International championships (50 m)==