Honors and Awards
- First-team Academic All-Big 12 (2008, 09, 10)
- 2008-09 Team MVP
- Third-team ESPN the Magazine Academic All-American (2010)
Arntz finished her career as one of the most accomplished swimmers in Nebraska history. The Omaha native was a 10-time scorer at the conference meet in her career, including three top-six finishes in 2010. She also owns the school's third-fastest times in the 100- and 200-yard breaststroke and the 200-yard IM. Arntz held a strong showing at the Big 12 Championships in College Station, Texas, where she finished fourth in the 100-yard backstroke and sixth in the 200-yard IM, earning her a birth to the NCAA Championships.
Academically, Kaitlin was named to the first-team Academic All-Big 12, as well as third-team ESPN the Magazine Academic All-American.
Arntz had an outstanding junior season, as she was consistently one of Nebraska's top swimmers in the breaststroke and IM. Arntz had 19 top-five finishes during the season, including a fifth-place mark in the 200-yard breaststroke at the 2009 Big 12 Championships. Arntz had the team's fastest 100- and 200-yard breaststroke time, along with the fastest 200-yard IM time. Arntz also had an NCAA B-Qualifying time in the 200-yard breaststroke with a time of 2:15.12 at the Last Chance Meet in Columbia, Mo. Arntz capped off the year by being named team MVP by the coaching staff.
Arntz followed an exceptional freshman season with a fantastic sophomore campaign, finishing the year with NU's top times in the 200-yard breaststroke and the 200-yard individual medley. Arntz earned 14 top-20 finishes, including a win in the 200 breaststroke at the Husker Invitational. Arntz had identical eighth- and 10th-place finishes in the 200- and 100-yard breaststrokes, respectively, at the 2008 Big 12 Championships after earning those same spots at the 2007 Big 12 meet as a freshman.
Following an excellent regular season that included 20 top-three finishes, Arntz ended her first year with the Huskers by qualifying for the finals of the 200-yard breaststroke at the Big 12 Championships. She swam the team's fastest time in 2006-07 (2:18.87) and became just the second Husker since 2001 to reach the top eight in the event at the conference meet. Prior to her February success, Arntz's regular season in the 200-yard breaststroke was highlighted by a seventh-place finish at the Minnesota Invitational, a win against Arkansas and runner-up finishes against four Big 12 teams, including nationally ranked Texas and Texas A&M. In addition to her eighth-place finish at the Big 12 Championships, she also finished 10th in the 100-yard breaststroke and 18th in the 200-yard individual medley, an event where she held the Huskers' No. 1 time (2:05.97).
Arntz earned high school All-America honors 16 times while competing for Millard West High School. She set seven school records and was a five-time Nebraska state champion. Arntz ended her high school career by capturing the Class A 100-yard breaststroke title for the second year in a row after winning the 100-yard butterfly gold medal as a sophomore in 2004. Arntz was part of two state champion relay teams, including the 2003 state record 200-yard medley relay (1:46.35) squad that included former Husker C.J. Bray.
Kaitlin is the daughter of Dan and Allison Arntz and was born on Aug. 23, 1988. She has two brothers, Bryan and Colin. Kaitlin is majoring in advertising.