2016 Big Shark Open Water Swim Series

Swim With The Sharks!

Get comfortable in the open water and practice your swim technique.

Each session will have programming and rides to compliment the swim, so bring your bike and get fit.  This series is staffed by Big Shark Events Staff, Local Coaches and Training Partners and a full compliment of lifeguards from BYLG Sport.

When: Most Saturday Mornings from April 30th through June 25th. The Lake will be open for participants from 8:00 am – 9:30 am. 

Where: The lake is located at New Town in St. Charles. See swim maps below. The perimeter course is .62 miles and in most areas you can touch the bottom.

Cost: Pre-register for each session, week by week or multiple at a time, online for $15. Pre-registration closes at 11:59pm the Friday before each swim.   On site registration is $20 per session and will open at 7:30am with separate lines for Day-Of Registrants and and Pre-Registrants. If the event is cancelled due to inclement weather, registration fees are transferable but not refundable.  Every effort, including delaying the start time, will be made to get the swim in. Check Big Shark's Facebook's page for swim status updates when weather is looming.

Wetsuits: The first 3 sessions will offer a Blue Seventy Free Wetsuit Demo. 4/30 and 5/7 (and maybe 5/14) will feature the Helix Demo Fleet.  For future days, wetsuit rental rate is $10.00 per session, weather and supply permitting. (2 rental payments can be applied to purchase your very own wetsuit).  To demo a Helix wetsuit, please bring some form of colateral (ID, Credit Card) to exchange for the suit. 

Fee structure covers venue, participant insurance, professional lifeguards, equipment, additional programming and staff support. 

You can pre-register on by clicking on the link below.

GO BIG Triathlon Training Group: Bundle all of the events and way more and join the GO BIG Triathlon Training Group

Support: Big Shark Bicycle Company will have a rental wetsuit fleet on site every week- until water temps exceed wetsuit conditions. For athletes who would like to ride after the OWS there will be an on site mechanic stand, tools and bike pump to work on your ride.

The Ride: Every Saturday following the scheduled programming you are welcome to join riders to complete your brick training. Meet on the opposite side from the registration tent at 9:35 am. There will be a brief safety talk prior to rolling at 9:45am. All abilities welcome.

Daily Routine:

  • All Swimmers must register (or check in for pre-reg) and get marked with a number upon arrival. 
  • BYLG Sport will conduct a short course orientation to each group of swimmers entering the water. Topics include basic swim safety and signaling distress.  Please listen to lifeguards instructions at all times. 
  • Swim direction will change from week to week. 
  • Upon entering the water, please report your number to Big Shark Staff. 
  • When exiting the water, again, please confirm your number with Big Shark Staff.  This helps keep accurate records and account for all swimmers present.


All vedors and programming will be available for questions during the swim. Specific Clinics will be held at the times listed.  Please meet behind the registration tents.

  • April 30th- FREE Blue Seventy westuits available. Demo and rental fleets. 
  • May 7th- FREE Blue Seventy demo and Rental fleet wetsuits.  Staff from the St. Louis Triathlon will be in attendance to explain more about the area's only Olympic distance triathlon. 
  • May 14th- Free Blue Seventy wetsuit demo.  BYLG Sport will conduct a FREE 30 minute swim anxiety clinic at 8am. Learn how to prepare for a variety of conditions and build your confidence in the lake.  
  • May 21st- TBD.   
  • May 28th- NO SWIMS. Memorial Day weekend.   
  • June 4th-  Pedal Hard will affer a Junior Bicycle Skills Racing clinic starting at 10am.  Not a junior?  Stop by to ask about camps and classes at Pedal Hard located at Big Shark West.  

Helpful Links:

New Town at St. Charles:

Stop by The Bridge at 3257 Domain for your pre or post swim coffee (or both).

For more information on the open water swim series please contact