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Coaches & Directors

Lake Country Swim Team is proud to offer its swimmers a highly professional coaching staff, committed to providing excellence through an impressive blend of experience and expertise. Feel free to contact the staff with any questions you may have!

Coaching Staff

Mark Kohnhorst

Executive Director/Head Coach

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Mark is the Lake Country Swim Team Executive Director and Head Coach, lead coach for Junior practice group.

Mark brings more than 30 years of experience to the program as a coach, swimmer and parent. Mark began coaching with the Hartford Swim Club and Hartford HS in 1980, coaching the Boy's and Girl's teams through to 1991. Mark's coaching career with LAKE began as the Hartford Program coach in 1987, being promoted to the Head Age Group coach in 1991. He assumed Head Coach and Executive Director responsibilities in 2002.

Raised, and still living, in Hartford Wisconsin, Mark is married to Darsi since Ground Hog's Day 1980.  He has three children, Whitney, Devin and Aiden. When not on the deck or in the office, he enjoys putzing around the house, reading, crossword puzzles and other word games. Mark loves to cook for the family as well, especially on the grill, which is used year-round.

You can reach mark via the phone or email.  You won't find him on twitter or facebook - sorry just too much to keep track of.

Dave Joyce

Head Senior Coach

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Dave Joyce has been coaching swimming full time for nearly 18 years, most recently as Assistant Coach and Recruiting Coordinator for the University of Wisconsin- Milwaukee, a position which he had held since the start to the 2013-2014 collegiate season.  The Panthers were very successful during Dave’s time there, with the women’s team claiming 2nd place in the Horizon League in both 2014 & 2015 and the men adding a runner-up trophy in 2015.  In addition, Emily McClellan qualified for and competed at the 2014 NCAA Championships in where she finished in 2nd in the 100 breaststroke.  Emily’s time of 57.76 made her the second fastest American performer of all time in that event. Prior to joining UW-Milwaukee on a full-time basis, Dave was the Head Coach of the YMCA at Pabst Farms from 2004-2013. Under his direction, the Piranhas Swim Team became increasingly more competitive at both the state and national levels.  The athletes he coached won countless WSI & YMCA State individual and relay event championships and several of his swimmers  on to compete at the highest level USA Swimming Championship events. In 2012, two YMCA at Pabst Farms swimmers qualified for and competed at the Olympic Team Trials.

Prior to assuming the role of head coach for the Pabst Farms YMCA Piranhas, Joyce was the head senior coach here at Lake Country "Phoenix” from 2000-2004. During that time, 22 LAKE senior swimmers tallied over 50 Wisconsin Swimming state records and one USA Swimming national record.  Joyce also led over 20 swimmers to USA Nationals, with two swimmers qualifying to swim at the 2004 U.S. Olympic Team Trials. One swimmer also achieved placement on the 2002 National Junior Team. The Phoenix team won Wisconsin State team championships every year from 2000-2004 and won the Speedo Sectional Championship in 2003.

Dave and his wife Amber reside in Ixonia and have two young sons, August (28 mos.) and Denver (14 mos.) and are expecting their third child in late August 2015.  Amber is the Youth Development Director at the YMCA at Pabst Farms and enjoys rock climbing and spending time with family.  Dave enjoys spending time with his family, escaping the winter by visiting the in-laws in Florida and fishing.  His favorite fish to catch are muskies (freshwater) and cobia (saltwater).

Mark D Johnson

Senior Silver and Bronze Coach

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At just 18 months old, MJ’s parents have photos of him attempting to dive off a chair into only 8 inches of water in a kiddy pool! Following lessons and a brief time competing for the local YMCA, he eventually joined Lake County Swim Team at the age of 6 where he began an illustrious 19-year swimming career.  Setting several Wisconsin State records and winning multiple 12&Under and 13&Over state titles. As a senior in high school, MJ competed on the 2002 U.S. National Junior Team and had the opportunity to represent the U.S. at an international competition in Australia. MJ’s efforts in Australia caught the attention of the coaches at Auburn University, were he signed with the Auburn Tigers.  While at Auburn, MJ studied Finance while also having the privilege of competing on 4 consecutive NCAA Division I National Championship teams. While at Auburn he spent his summers training, competing, and working as a swim-camp counselor at the Auburn Tiger Swim Camp. He developed a passion for passing on his knowledge to the next generation of swimmers as a camp counselor. MJ was also a competitor at the 2004 and 2008 U.S. Olympic Trials.

Coach MJ has been coaching and teaching lessons full-time for the last 5 years.  MJ started off his coaching career as Head Coach at Big Blue Aquatics in Glenview, Illinois and then Lifetime Swim Team Southeast in Birmingham, Alabama.  MJ couldn’t be more excited that his swimming and professional life has come full circle by joining the Lake Country staff in the fall of 2015.  He looks forward to coaching up our Senior Bronze and Senior Silver, while also helping with the Sterling and Senior Gold programs.

Ruth Ann Ahnen

Head Developmental and AG Gold Coach

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Ruth Ann is the lead coach for the AG Gold group. SHe has been with LAKE for over 11 years. She grew up swimming in Wisconsin and Missouri. She was a MO state HS champ and record holder and attended the University of Missouri. She has coached in Maryland, Pennsylvania and now in Wisconsin. She has coached all levels from learn to swim to masters. She is also the head coach of the Arrowhead High School girls swim and dive team. 

She is a CNHP (Ceritfied Natural Health Practioner) and is finishing up her ND ( Doctor of Naturalpath). She is a life long learner and has attended numerous national and international coaching clinics and leadership events over the last 30 years.. She enjoys running swim clinics and working one on one with swimmers. Her goal is to bring out the best in her swimmers in and out of the pool. Her motto is , if you love what you do , you will never work a day in your life and she does because of the swimmers she has the opportunity to coach.

In her spare time she loves to climb mountains and trailrun.She has trekked to Everest Base Camp, and climbed Kilimanjaro and Rainier. She has competed in ultramarathons and run the NYC and Marine Corp Marathons. She and her husband Tony have been married for 28 years and have 2 children Katie (28) and Matt (23) and 2 aussie pups, Bear and Gemma.

Whitney J Witt

Hartford Head Coach/Team Novice Director

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Whitney is the Phoenix's Novice Director and the lead coach at the Hartford Pool.  This is her 13th year with the team as a coach, however, she swam for the team for 11 years.  You can find Whitney in the team office during the day and on deck in the evening.  Your best means of communication are via email at wjk416@hotmail.com.

Whitney currently resides in Monches, WI.  She
loves teaching children of all ages about the wonderful world of competitive swimming.  She cares deeply about every child she works with and absolutely loves how much they all make her smile and laugh!

Aiden Kohnhorst

AG Silver Coach & Super 8 Coach

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Aiden has been a Lake Country Swim Team member since he was 7 years old.  Born and raised in Hartford, Aiden attended Hartford High School where competed regularly inthe WIAA State Meet and established a school record in the 500 Free.  He has been coaching with the team since 2010.  Aiden has a Level One Certification with ASCA.  In addition to being the lead coach for Lake Country's Bronze, Silver and Super 8's group, you will see him helping out with the other age groups programs on the team.

Despite his youth, you won't find Aiden on the social media sites, but you can reach him via email or phone.

MacGyver W Zepezauer

Assistant Coach - Hartford Pool

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Conner G Andrews

Assistant Coach

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Coaching Background:

Started coaching in the summer of 2008 for Madison West YMCA and continued there for the next couple summers after before becoming a coach at Oregon Community Swim Club for 2 consecutive seasons. In the spring of 2012, I came across the great opportunity to coach for the team that I swam for and have been here ever since! Swimming is my obsession and I am happy to be in the business of making elite swimmers. In my coaching style, I take an educational, science-based approach while creating a positive atmosphere. 

Swimming Background:

Started competitive swimming as a 7 year old for the Tosa Swordfish and after 2 years I moved and came to Lake Country where I swam from 1998-2007. I was part of 17 state championship team wins and had attained multiple individual state titles starting my sophmore year of high school. Qualified and finaled at Junior Nationals and qualified for the U.S. Open. I was part of the Arrowhead High School Team all 4 years where I was part of the 3rd consecutive team state title win in 2004 and I had attained 3 individual state titles throughout my high school career. Named 2006 WIAA Division 1 and Journal Sentinel swimmer of the year.  As a senior I was a team captain. I continued my swimming on an athletic scholarship at University of Wisconsin-Madison from 2007-2010 where I competed at the Big Ten Championships each year. I still swim and compete once in awhile and I'm enjoying it just as much! :)

Peter Christenson

Dryland Coach

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Board of Directors

Scott Murphy

President

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David Stemper

Vice President

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Marc DeVillers

Treasurer

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Heidi Garvin

Secretary

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Kristin Zietlow

Board Member

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Brenda Nunnally

Board Member

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Allan Schmitz

Board Member

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Paul Wilson

Board Member

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Tracy Gordon

Board Member

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Laura Vogt

Board Member

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Greg Hansen

Board Member

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Erin Prymas

Board Member

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Stephen Gibbs

Board Member

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