Flathead Lake Open Water Swimmers

Flathead Lake in northwest Montana is the largest natural freshwater lake west of the Mississippi; slightly larger than Lake Tahoe at 27.3 mi. long, 15.5 mi. wide, and max depth of 370.7 ft.. As one of the cleanest in the world, Flathead Lake is perfect for OPEN WATER SWIMMING! No sharks, no jellyfish, and no lane lanes...just clear, clean, and crisp water!

Practice Information

Our practice times vary from season to season and are weather conditional. Please call for times!



Contact Flathead Lake Open Water Swimmers

Club Contact

Mark Johnston

406-298-3569

coach@flowswimmers.com