DAM's Annual Lake Berryessa Swim is one of the longest running open water swim events in America. Started in 1981 as a friendly lake swim, this event now attracts over 500 swimmers each year to the shores of Lake Berryessa. In 2024, this swim event will host the 2024 USMS Middle Distance National Championship.
Course: 1-mile and 2-mile looped courses in a freshwater lake. 1 loop for 1 mile swim, and 2 loops for 2 mile swim. See course maps here.
Host: Davis Aquatic Masters. Race Director: Kevin Waterson, berryessa@damfast.org
Sanction: The adult races are sanctioned by Pacific Masters Swimming for USMS, Inc., Sanction # 384-W003
Conditions/Safety: Expected water temperature is 68-72 degrees. Course is patrolled by safety craft. Individual escorts are not allowed. All swimmers must wear the provided swim cap and follow all USMS Open Water rules. Mandatory safety briefings will be held at 8:50 am and at 11:00 am at the information kiosk. The Event Safety Plan will be posted at the registration desk on race day and may be viewed here.
Start: Deep water, wave starts (see below). Finish: Onshore.
Cutoff times: For 2 mile events, 2 hours after wave start. For 1 mile events, 1 hour after wave start. Safety craft will remove swimmers who fall short of the cutoff times.
Seed Times for Start Waves: Entrants will provide estimated 1650 yd or 1500 meter pool time to be used to seed start waves. Those in Category 2 (wetsuit division) need not include a seed time.
Eligibility: This event is open to USMS registered swimmers or members of an equivalent organization (for foreign swimmers). To register for the event, you must provide proof of current membership. You may register for a USMS One-Day Event Membership (OEVT) during the online entry.
Entry Deadline: Online registration closes Wednesday, May 29 at 11:59 PM (Pacific time). NO paper entries and NO race-day entries. NO race-day category swaps (you cannot change from wetsuit to non-wetsuit (or vice-versa) on race day). NO race-day race swaps (you cannot change from the 2 mile to the 1 mile race (or vice versa) on race day). You may always withdraw from a race on race day.
Countdown to event
Registration fees
1-mile Swim Category 1 (No Wet Suit)
Registration closes in 27 days 11 hours-
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$55.00Mar 18 – Apr 30
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Register for 1-mile Swim Category 1 (No Wet Suit)$60.00Now registering May 1 – May 29
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2-mile Swim Category 1 (No Wet Suit)
Registration closes in 27 days 11 hours-
2024 USMS Middle-Distance Open Water National Championship
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$55.00Mar 18 – Apr 30
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Register for 2-mile Swim Category 1 (No Wet Suit)$60.00Now registering May 1 – May 29
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Both Races
Registration closes in 27 days 11 hours-
Default will be category 1 (no wet suit) unless otherwise requested to the Race Director via email in advance of race day.
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$80.00Mar 18 – Apr 30
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Register for Both Races$85.00Now registering May 1 – May 29
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1-mile Swim Category 2 (Wet Suit)
Registration closes in 27 days 11 hours-
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$55.00Mar 18 – Apr 30
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Register for 1-mile Swim Category 2 (Wet Suit)$60.00Now registering May 1 – May 29
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2-mile Swim Category 2 (Wet Suit)
Registration closes in 27 days 11 hours-
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$55.00Mar 18 – Apr 30
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Register for 2-mile Swim Category 2 (Wet Suit)$60.00Now registering May 1 – May 29
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Contact information
- Event contact
- Kevin Waterson
- berryessa@damfast.org
