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Open Water Swims

These are all the swims for the 2018 open water season for Pacific Masters Swimming.

LAST UPDATED September 4.  This page will be updated as details become available.

This page will be updated if a venue changes or a race is cancelled due to the water level or quality.

This year the magic number is 5. Your top five finishes count toward the 2018 open water points competition. Only open water swims longer than 500 meters will be considered for points.  Remember, if swims are cancelled, that number could be adjusted.

The results of each open water race will be posted on the open water results page.

The Open Water Points competition has two divisions for the two different types of suits. Here is the link to the rule: swim suit rules. Please review them before leaving for the open water swim. Please also note that no tape (spider tapes, bandages, duct tape, etc…) is allowed in either category.


  • Age Group determination: You will swim in the age group determined by your age as of December 31, 2018.
  • Swim Suits: Category 1 Long suits are allowed for both men and women in Open Water but can not contain clasps or zippers.  The swimsuit shall not cover the neck and shall not extend past the shoulder nor below the ankles. USMS Rule 303.7.2

Only Open Water Points scored with Category One suits will count toward Swimmer of the Year.  For more details on the rules governing open water points see here.

See the Individual Open Water Point Standings and Team Open Water Points Standings for 2018


Saturday, May 19
Spring Lake 
One Mile 
500 M (RCM)

A one mile loop. Water temp is normally in the mid 60’s. There are some weeds. This swim is always very well run; they will have you out of there by 11:00 am, even if you stay for the awards. Parking is easy. Nice green lawn to sit on. Post event snacks provided.

Please note that only the 1 mile swim is eligible for open water points.

USMS Sanction 388-W003.

[ information ]  [ register ] [ 500m and 1 mile results ]


Saturday, June 2
Lake Berryessa
1 & 2 mile loops in a freshwater lake

Join us for the 36th Annual DAM Lake Berryessa Swim!
Hosted by Davis Aquatic Masters (DAM)
Saturday, June 3, 2017
Steele Canyon Campground, near the junction of highways 128 and 121.  This venue features plenty of off-street parking and campsites available for the weekend. The water is clean, comfortable and at it's highest levels in a decade, plus the weather is, more often than not, fine!

The Lake Berryessa Swim is one of the longest running open water swims in America. Join hundreds of other USMS swimmers for the 1-mile and/or 2-mile swim then party/picnic at the lake! One food truck from ChickPeas Kitchen will be onsite to satisfy your pre- & post-race cravings with fresh Mediterrenean menus..They offer healthy yet delicious foods including many vegan and gluten-free options. Race day purchase and pickup.

** New Award** – Know somebody who might want to try an open water swim? Tell them about our new Rookie Racer Reward: a commemorative medal given to all first-time competitors in the Berryessa event.

Fees include swim cap, official Berryessa mug (Mugs guaranteed only for first 300 swimmers to register. Race day mugs subject to availability), post race refreshments & online race results.

USMS Sanction 388-W002.

Paper registration forms available at
Online registration: USMS (adult only)

NOTE:  The intent is to offer USAS 1 and 2 mile swims.  Check back to learn when USAS Registration opens.

For more race information contact:
Stuart Kahn, Race Director

[ information ]  [ register ] [ 1 mile results ]  [ 2 mile results ]


Saturday, June 9
5K and 10K

Sunday, June 10
1.2K and 2.5K 

Lake Del Valle 

This year, the Lake Del Valle event will start on Saturday with a 5K/10K. The swims will run at the same time. You have to pre-register for the 10K and be able to meet the 3 ½ hour cut off time to swim the event.  On Sunday, the 1.2K and the 2.5K will be held.  If you’re new to open water swimming, try the 1.2K swim.   It’s run first.  For a good workout, do both.  Plenty of parking.  A good place to bring the kids:  they have a roped off swimming area.  Post event snacks provided. 

NEW THIS YEAR!  Just for Fun Division:
Fins or pull buoy allowed – all proceeds benefitting North Bay Fire Relief Efforts – Swimmers in this division will  start in a separate wave.

USMS Sanction 388-W001.

[ information] [ USMS Registration ] [ USAS Registration ]

[ 10km results ] [ 5km results ] [ 1.2km results ] [ 2.5km results ]


Santa Cruz Open Water Weekend

Saturday, July 28: 45th Annual Roughwater 1 mile Swim
Sunday, July 29:  The Cruz Cruise 2 mile Swim

The Saturday 1 mile ocean swim goes around the Santa Cruz pier. The Sunday 2 mile ocean swim goes around the same pier, loops around the other side and comes back. The water is usually 58-61 degrees! Both are fun and very popular swims even if you’re numb. The Saturday swim is one of the bigger events and is started in two waves: under 40 years old and 40 years old and over. The Sunday swim is smaller and very low key; it is NOT for novice swimmers. 

For both swims bring lots of quarters for the street parking meters ($1.00/hour). Or walk a long way. You may want to bring a chair if you don’t like sitting on a sandy beach. On Saturday there is no post event food, but there are plenty of restaurants right there. On Sunday there will be plenty of warm beverages and snacks at the finish.

The Saturday swim starts at 11am and often the fog has lifted by then. The Sunday swim starts at 8:30am and is usually foggy. (Since the water is +/- 60 degrees it's important to stay warm: wear a thermal cap and ear plugs and don’t stop to look around while you are out there. Keep moving and have fun! 

USMS Sanction 388-W005.



Saturday, August 11
38th Annual Donner Lake Open Water Swim
2.7 miles (SNM)

Registration is CLOSED.  This event is SOLD OUT!

One of the longest swims of the season. The start is at the east end of the lake at 8:30am and the finish is at the west end. If you drive along the shore of the lake you will marvel at how far you will swim. The swim is limited to 400 swimmers this year, and is known to quickly fill its entry limit. Enter early if you wish to swim the Donner Lake Open Water Swim. Registration opens June 1, 2018  at 8am PDT.

Free shuttle buses run between the start and the finish. Swimmers are given a plastic bag at the start to hold their sweats. It will be transported to the finish for you. 

If you are interested in purchasing any Donner Lake Open Water Swim merchandise please view the merchandise page.

USMS Sanction 388-W004.

 [information]  [register]  [merchandise]


Sunday, September 9
Whiskeytown Lake 
1 & 2 mile (RAD)   Cancelled due to the Carr Fire

Whiskeytown Lake is just outside Redding so plan to drive up the day before. This is a beautiful lake. There’s a nice shady picnic area and beach so bring the family. This event is in the early fall and the weather can be either chilly or hot. The lake is a bit cooler than Berryessa (think mid to high 60’s). If you plan to do both the 1- and 2-mile events, be prepared to feel a little cold at the start of the 2-mile. Post event snacks. 

USMS Sanction 388-W006.

This race served as a major fund raiser for the Redding Ducks Swim Team. Please consider a donation, especially if you were planning to swim, or have swum this race in the past.

Here is the link to the donation site:

Saturday, September 22
Keller Cove Pt. Richmond, SF Bay
½ mile, 
1 mile, & 
2 miles

This is the final event of the OW season; last chance to pile-up those points!  Only SF Bay swim on the calendar, in protected cove at Miller/Knox Regional Shoreline.   ½, 1 and 2-mile distances run concurrently in waves – take your pick.  Expected water temp 62 to 64 degrees.  Start and finish on a sandy beach with sweeping views of The City, Golden Gate, Angel Island, Mt. Tam and more!  Great spectator opportunities.  Lively race announcer!  Hot shower on the beach!  Free parking.  Post-race picnic at the park, or check out shops and restaurants in Point Richmond historic district, 5-minute walk from the beach.  Finish the 2017 OW season with a flourish!

USMS Sanction 388-W007

[ information ]    [ register ]

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