CONGRATULATIONS MUD SHARKS on Pacific Masters… read more

We welcome you to come join Northern Marin’s oldest, most successful, and FUN Masters Swim Team, the Rolling Hills Mud Sharks. For 20 years we have encouraged the competitive swimmer to achieve best times through challenging workouts, the latest technique enhancements, and the support of your teammates… all under the guidance of our award-winning Head Coach, Sharlene van Boer.

You are invited to join the team if you are able to swim all four strokes, able to do a flip turn and swim workouts of 2500-3000 yards. These are intense sessions intended to bring out the best in each athlete.

Because of the unique nature of our team, we have set age-group World Records, Pacific Master’s records, national top ten times and top team finishes at the regional meets. Our Head Coach, Sharlene van Boer, has also received the distinguished Coach of the Year award from Pacific Masters.

If you are interested, contact Board President, Eric Sutton-Beattie at 415.893.0211 or or Head Coach, Sharlene VanBoer, at 415.892.9087 or You may also visit the Rolling Hills Mud Sharks independent website at >

Those who are interested but cannot meet the requirements are invited to join our related programs at the Club: Swim Fit and Swim a Mile, both of which are coached by Mud Sharks, as well as individual lessons available through the Club.


Tue & Thu | 5:30am to 6:45am
Mon, Wed, Fri | 10:00am to 11:15am
Saturday | 8am to 9am

Mon & Wed | 6:30pm to 7:45pm

We encourage members to attend several team-effort regional swim meets from February through October, as well as to participate in the many open water swims from May to September.


Mud Sharks finished 4th overall out of 39 teams at the Pacific Masters Short Course Champs held in Walnut Creek October 12-14. We had 3 new members of the team competing in this meet: Geoff Cunningham, Marie Hansen, and Scott Williams. Ken Ericsson was high point for his age group, winning all 7 of his events. Other top three

Diannne Arrigoni: 100 Free 2nd, 50 Free 3rd
Alice Berringer 100 Free 2nd
Mary Ellen DeHaven: 100 free 1st, 50 Fly 3rd
Marie Hansen: 200 Breast 3rd
Cyndi Hayes-Rupp: 50 Breast 2nd
Linda Hepworth: 50 Back 3rd, 200 Breast 3rd, 100 I.M. 3rd
Greg Laudenslager: 200 I.M. 1st, 100 Back 2nd, 50 & 100 Breast 2nd, 200 Breast 3rd, 50 Free 3rd, 100 I.M. 3rd
Don Pierce: 400 I.M. 1st, 1500 Free 1st, 200 Fly 1st, 100 Fly 2nd, 200 I.M. 3rd
Eric Sutton-Beattie: 50 Breast 3rd
Maggie Tevis: 200 Back 1st, 400 I.M. 2nd, 1500 Free 2nd, 50 Back 2nd, 50 Fly 3rd, 100 Back 3rd
Eric van Boer: 50 Breast 1st, 50 Fly 2nd, 50 Back 3rd, 50 Free 3rd
Scott Williams: 50 Breast 2nd, 100 & 400 I.M. 3rd, 50 Fly & 100 Fly 3rd

We had 3 winning relays, 2 second place relays, and 3 third place relays! On top of this, the Mud Sharks were named as the best cheering team of the meet! There were many best times and excellent swims as well. Congratulations and a big thank you to all of you who participated in this meet.

See you at the pool!
– Sharlene


Rolling Hills Club’s masters swim team, the Mud Sharks, WIN TEAM TITLE at the Pacific Masters Long Course Championships!

Competing in the Small Teams Division against over 40 teams from Northern California and Nevada, The Rolling Hills Mud Sharks combined over the three day championship meet hetld August 10-12 in San Mateo for the first place team title!

Pacing the Sharks were Bill Adkison, Dianne Arrigoni, Beth Flynn, Ken Ericsson, Linda Hepworth, Jeffra Hull, Greg Laudenslager, Don Pierce, Don Soroka, Eric Sutton-Beattie, Maggie Tevis, and Eric van Boer. Coach Sharlene van Boer stated, “it was a true team effort where every single swimmer needed to contribute (and did) for the win!”

2012 Trans Tahoe Swim Relay

“The famous annual Olympic Club Trans Tahoe Relay race, a 12 mile frigid swim across Lake Tahoe without wet suits! The 2012 Rolling Hills Mud Sharks’ entry in this international race includes Bill Adkison, Don Davis, Greg Laudenslager, Duncan Ross, Eric van Boer, and Scott Williams. Special “guest star” Roger Cassidy drives the boat!”