
Mark Kohnhorst
Executive Director/Head Coach/JRs 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.

Mark D Johnson
Head Senior 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.

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 16th 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 [email protected]
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!

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.

Aiden Kohnhorst
AG Bronze, AG Silver & 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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Coach Conner Andrews has more than a decade under his belt as
a swim coach. He started out assisting a former Lake
Country Senior Coach at Madison West YMCA (now Dane County
YMCA) during the summers he stayed in Madison to train and
race as a Wisconsin Badger. Later, Conner moved onto a bigger
role coaching multiple groups at Oregon Community Swim Club
and then returned to Lake Country as a Senior Assistant Coach in
2012. While at Lake Country he has been a lead coach of Senior
Silver and Senior Bronze and assists with all other
Senior groups. He has also gained experience as a
Head Coach at Pewaukee High School and as an Assistant Coach
at University of Wisconsin-Milwaukee. His specialties lie in
technique analysis and mentorship.
As a veteran swimmer of over 22 years, Conner has a long
history with Lake Country Swim Team starting at age 11 after
switching from Tosa Swordfish. He knows the Phoenix tradition of
excellence well. His experience as a swimmer ranges from a
multi-time individual state champion in both club and high school
and finaling at Junior Nationals through high school to being
heavily recruited by top ranked Division 1 schools and
ended up accepting an athletic scholarship as a Wisconsin
Badger where he continued to perform at a high level and competed
at the Big Ten Championships each year.
Following collegiate swimming, Conner hasn't stopped. Most
recently, he has been taking on the world's toughest
closed-course swim races, Neptune Steps (put on by Red
Bull), and placed in finals among multiple
international world-class athletes. Not only that, he is also
heavily involved in bridging swimming to clean water
initiatives as a community partner of Milwaukee based
non-profit organizations.

Thomas Radtke
Senior Assistant
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Tom began swimming competitively in the Central California
Swimming, then on a year round basis with Raisin Country Aquatics
at the age of 7. Completed his age group career with RCA with two
years competing in Junior Olympics and becoming a People to People
ambassador for the US. He went on to study Kinesiology at Whitworth
University, a division 3 NCAA school, where he and his team won 4
consecutive conference championships and winning the 1650 free his
senior year. A freestyle/backstroke mid-distance swimmer out of
high school, he branched out into distance freestyle while in
college. During this time he developed the desire to coach young
swimmers on their own trek through the swimming world.
His coaching career began as a summer league assistant in 2004
at the age of 17. Since then he’s worked on opposite
sides of the country with nearly every venue for teams, where
he’s coached all ages and ability levels, from learn-to-swim
to collegiate national champ qualifiers to masters.
Tom’s time off is used for hiking, exploring new cultures,
and just enjoying a good day on the water. He and his wife have
been married for nearly 5 years in august and have a lovely German
Shepard/lab mix pup named Luna.