Event Information

Open Water Swimming


Entry Fees

Entry Fee:
Until June 8 at 5pm
Second Event: $10/participant
 Online Entry Deadline: June 8
 T-Shirt Deadline: June 8

Event Photos

Click the button below to view photos of the BSSG Open Water Swim event.

View Photos

Lake Elmo State Park
2300 Lake Elmo Dr.
Billings, MT 59105

Event Sponsored by:



  • USA Swimming and US Masters Swimming rules and regulations will apply to the event.
  • There will be non-wetsuit and wetsuit divisions in both the mile and the 400 meter swims.
  • Flotation shorts and flotation pants are classified as wetsuits. Skinsuits/Speedsuits may be used in the non-wetsuit division. For a list of approved suits please go to https://www.teamusa.org/USA-Triathlon/About/Multisport/Competitive-Rules/Approved-Skinsuits. Wetsuits will not be allowed if the water temperature is 84 degrees Fahrenheit or higher.
  • Races will be cancelled if water temperature is 60 degrees Fahrenheit or lower.
  • Race organizers reserve the right to modify or cancel the event due to weather and other conditions.
  • Lifeguards will be present at several locations along the courses as will support boats/kayaks/stand up paddle boards. All participants MUST wear the provided swim cap.


Both the mile and 400m races are a “deep water” start with swimmers starting in the water just to the right of the boat ramp. The mile swim will parallel the north shore line of the lake and proceed to the east side of the lake for the turn around. Swimmers will follow a counter-clockwise route, keeping the marker buoys on their left shoulder. The finish line is up the boat ramp through the finishing chute. Swimmers in the 400m race will swim a counter-clockwise route to the first marker buoy and turn around to return to the boat ramp through the finishing chute.

Awards Ceremony

The awards ceremony will begin after the 400 meter race.