Coaches and Directors

Coaches and Directors
Coaching Staff
Nathan Mundt Head Coach

With over 15 years of experience, Nathan has coached both collegiately and within USA Swimming.  In 2003, an unexpected turn of events led to Nathan becoming one the youngest Division I Head Coaches in the country at Valparaiso University.  From 2005-2008, he served as the Head Coach of the Men’s & Women’s programs at Western Illinois University, and was named the Mid Continent Women’s Coach of the Year in 2007.  In 2008, Nathan became an assistant coach at the University of Iowa and was a part of the coaching staff until the fall of 2016.  In eight season with the Hawkeyes, Nathan helped guide numerous athletes to All American honors, and was the lead coach of the 2015 Women’s Big Ten Champion in the 1650 Freestyle. 

Since becoming the Head Coach of the Iowa Flyers since 2016, Nathan has led several qualifiers to USA Swimming Junior Nationals.  In 2017, Nathan coached the 2017 US Open Champion in the Women's 200 Butterfly. In the same year, he was named to USA Swimming's list of Junior Natioanal Team Coaches.

Nathan’s wife, Erika, is a PE teacher at Iowa City West High. The couple has three boys Nolan, Macklin and Lincoln. 

Christopher Freeman Assistant Head Coach

Chris was born and raised in Rochester, Minnesota, where he competed for the Orcas swim club. He was a letter winner as a swimmer in high school, where he was a four-time NISCA All-American and state champion in the 500 freestyle in his senior year. Chris then came to swim for the Hawkeyes, competing in three Big Ten championships and attending the Division 1 NCAA championships as an alternate. During his time as a Hawkeye, he achieved three top-ten Iowa all-time top performances in the 200 freestyle, 100 butterfly, and 100 backstroke. Chris graduated from the University of Iowa in the spring of 2015 with a degree in recreation and sports business. Later Joining IFLY Swim Club in the summer of 2015, working closely with the elite groups before accepting the IFLY Assistant Head Coach postition in September 2016.

Tanja Avant Head Age Group Coach

ASCA Level 4 Education Certifed 


Tanja has enjoyed swimming nearly all her life, literally spending most of her summers during her youth in a pool. Quite by accident, she discovered her love for competitive swimming in high school and swam for her school's team, the Washington Warriors in Cedar Rapids, IA. Tanja had a very successful swimming career excelling in most sprint events. During her high school and college days, Tanja was a lifeguard and had the opportunity to teach her love of swimming at the YMCA and Elmcrest Country Club in Cedar Rapids. She graduated from the University of Iowa in 1995.  Tanja worked at the University of Iowa Hospitals and Clinics for 15 years before starting with IFLY in 2011 as the Freshman Group lead coach.  In 2015, she enthusiastically accepted a full-time position with IFLY as the Head Age Group Coach.  During Tanja’s time with IFLY she has developed swimmers that have competed at many levels ranging from local meets, LSC Championship Meets, Central Zones Championships, Central Zone Open Water Championships, NCSA Age Group Championships, and Sectional Meets.  Many of IFLY’s swimmers who started out with Tanja have gone on to compete at the TRY Pro Series, Junior Nationals, and NCSA Junior Nationals. 


Tanja remains involved in swimming, holding various positons within Iowa Swimming, INC including:  

  • Board of Directors:  Age Group Vice Chair (2017 and 2019)
  • Technical Planning Committee (2017 and 2019)
  • 2018 ISI Swimposium Committee Chair (10/2018)
  • Nominating Commitee Chair (2016-2017)

Additonally, Tanja has enjoyed coaching at several Zones and All-Stars Meets for Team Iowa:

  • Central Zones:  2016, 2018
  • Multi-Cultural Zones:  2017
  • Midwest All-Stars:  2014, 2017

Tanja lives in Iowa City her husband, Todd, and their family...both two-legged and four-legged!

Caleb Babb Coach
John Colin Coach
Rachel Duray Coach

Rachel is from DeWitt, Iowa and began swimming competitively when she was 12. She swam breaststroke and coached with River Cities Aquatics, and went on to swim at Clinton High School. She is currently attending the University of Iowa to become a Spanish and English as a Second Language teacher and getting her endorsement to coach high school swimming. 

Blanca Castillo-Lehnertz Coach

Blanca has been in the swimming world since she was 10. During high school she competed for the Walnut Creek , California National swim team and competed at Junior Nationals in multiple years. Swimming collegiately for the University of Kansas , her specialty events were the 100 and 200 Butterfly. While in college she also swam for the Puerto Rican National swim team and placed 3rd in the 1988 Central American Games in Mexico. That year, she swam a 200 butterfly that set a U.S. Masters national record time that stood for 18 years.

Following graduation from KU, Blanca attended UCLA where she earned her Master's Degree and joined an ocean swim team and competed in Pacific Ocean open water races. After teaching junior high school and high school in southern California she relocated to Iowa to raise a family.

After taking six years off from swimming, she jumped back into the pool again in 1997. Blanca found the joy of competing at the national level in Masters swimming. In the 2002 Masters National Meet she finished in the top four in four events and won the national championship in the 200 butterfly. In the 2006 FINA World Master's Championships Blanca finished with two top ten performances.

Blanca has been a USA Swimming certified coach for the past ten years, working with age group swimmers with a wide range of ability levels in eastern Iowa. Blanca and her husband Rod have three children (Anthony, Tereysa and Mariana).

Sabrinna Hegelheimer Coach
Sabrinna grew up in Ames, Iowa and started swimming competitively when she was about 11 years old for
the Ames Cyclone Aquatic Club.  In high school she primarily swam breaststroke and sprint freestyle. 
During her high school swimming career, her team had some very high achieving individuals and they worked hard to win 3
state titles.  Sabrinna is currently a sophomore at the University of Iowa studying Health and Human
Physiology and plans on attending Physical Therapy school after graduation. 
Allyson Herman Coach

Allyson is from Oconomowoc, Wisconsin, and began her swimming career when she was 8 with the YMCA at Pabst Farms Swim Team.  In middle school, she made the move to the Schroeder YMCA Swim Team where she was a state qualifier in the 400 IM.  Throughout her high school career, Allyson swam IM and backstroke and was a vital part of her high school team’s timing system.  


Unfortunately, Allyson had her swimming career cut short due to a shoulder injury but has used that experience to become an advocate for prevention practices in competitive swimming. Allyson is currently a sophomore at the University of Iowa majoring in Information Systems with a certificate in Interscholastic Athletic Administration and a minor in Sport and Recreation Management.

Amy Lenderink Coach

Amy was born and raised in Parker, Colorado and has been an elite swimmer since the age of 10. Her passion for swimming began on her summer league team, the Stonegate Stingrays, where she holds team and league records for every age group in the butterfly and freestyle events. Amy was a member of the Denver Swim Academy club team in Colorado for 6 years, and also swam for Regis Jesuit High School in Aurora. Amy was a 7-time All-American, 5-time State Champion and State runner-up in the 100 butterfly in high school, and has brought her talents in the pool to the University of Iowa collegiate swim team. Since moving to Iowa, she has swamtwo top-ten Iowa all-time swims in the 100 and 200 butterfly events and has made the University's dean's list for 4 semesters. Amy is currently a sophomore student-athlete at the University, studying Psychology and Human Relations with an aspiration to become a Sports Psychologist. She is thrilled to be a new member of the Iowa Flyer's coaching staff and hopes to foster young athlete's growth and successes both in and out of the pool!  

Julia Mindy Coach
Sage Ohlensehlen Coach
Alissa Sabers Coach

Alissa has always loved the water and started swimming competitively at the age of seven. Growing up in Decorah, Iowa, she participated first with the local summer team. In high school, Alissa competed for three years with the USS program and also swam for Decorah High School. She also worked as a lifeguard and taught American Red Cross swimming lessons for five years. Alissa graduated from the University of Iowa in 2010 with a degree in Health & Sport Studies and in 2014 with a Masters of Arts in teaching English.  She is currently an English teacher at Xavier High School and resides in Iowa City with her husband, Michael and daugther, Emma.

Mitchell Schumacher Strength Coach

Mitchell has been a coach at IFly since June of 2017. He received his Bachelor's degree in Human Performance and Fitness from St. Ambrose University in 2016. Mitchell’s sport of choice since age 5 has been tennis. Mitchell is a driven and focused coach that is determined to help every athlete move better. Mitchell’s favorite parts about IFly are seeing the athletes grow and succeed, and joining his staff mates on deck at meets. When he is not training working with the athletes, Mitchell is a trainer at Performance Health and Fitness. In his free time, Mitchell enjoys being with friends and hanging out with his dog, Norma. Mitchell firmly believes that no matter the stage you are at, you can take it one step further. 

Janice Severns Coach

They say "Do what made you happy when you were 10 . . ." That brought Jan to IFLY as a masters swimmer and now as a coach! Jan grew up in Omaha and started club swimming and diving at age 8. After a move to Deerfield, Illinois, she swam and dove in high school (6th in state in diving, state qualifier in 100 butterfly) and was a diver in college at University of Miami in Florida, where she was an NCAA qualifier in the 3M springboard. Her aquatic life has included teaching lessons, coaching a club team, as well as synchronized swimming, scuba diving, and underwater hockey! Jan now lives in Williamsburg, Iowa, with a little hobby farm (2 horses, 4 dogs, and 10 cats). Her daughter was a collegiate soccer player and her son a high school divisional wrestling participant.

Board of Directors