Lake Tahoe Swimming and Donner Lake Swimming Come and swim in the clear and clean waters of Lake Tahoe and Donner Lake 500 meters, 1/2 mile, 1.2 mile, or 2.4 mile and 4×100 meter open water swims! Join us for High Altitude Training! Tahoe City Swim June 29, 2019 Alpine Fresh Water Swim Swim Donner Lake Truckee July 21, 2019 Lake Tahoe Swim August 24, 2019 Register here Thank you to these sponors! Sierra Open Water Swimming welcomes Synergy as our Official Wetsuit and Swimming Gear provider. Check out their lineup of wetsuits and other swimming gear. Use the code RFB9MMB312 for a 20% discount!