Marathon Swimmers Federation

U.S. Marathon Swim Calendar

Now updated for 2016!

List of organized marathon swim races in the United States or nearby locations. 10 km (6 miles) or longer.

2016 dates if available; otherwise 2014-2015 dates are shown. To add an event to this list, please contact us.

Date Swim Location Distance Type
4/2/2016 Swim Around Lido Key Sarasota, FL 7 mi Circumnavigation
4/16/2016 Tampa Bay Marathon Swim Tampa, FL 24 mi P2Pbay
4/17/2016 Nike Swim Miami Miami, FL 10 km Lagoon / Multi-Loop
4/27/2016 S.C.A.R. Swim Challenge Saguaro Lake, AZ 9.5 mi Lake / P2P
4/28/2016 S.C.A.R. Swim Challenge Canyon Lake, AZ 9 mi Lake / P2P
4/29/2016 S.C.A.R. Swim Challenge Apache Lake, AZ 17 mi Lake / P2P
4/30/2016 S.C.A.R. Swim Challenge Roosevelt Lake, AZ 10 km Lake / P2P
6/4/2016 Swim Around Key West Key West, FL 12 mi Circumnavigation
6/11/2016 Del Valle Open Water Festival Livermore, CA 10 km Lake / Multi-Loop
6/18/2016 FKCC Swim Around Key West Key West, FL 12 mi Circumnavigation
6/18/2016 END-WET Grand Forks, ND to Oslo, MN 36 mi River / P2P
6/18/2016 Son of a Swim Lake Memphremagog, VT 6 mi Lake
6/26/2016 8 Bridges Hudson River Swim Rip Van Winkle to Kingston Rhinecliff 18.3 mi River / P2P
6/27/2016 8 Bridges Hudson River Swim Kingston Rhinecliff to Mid-Hudson 19.8 mi River / P2P
6/28/2016 8 Bridges Hudson River Swim Mid-Hudson to Newburgh Beacon 13.2 mi River / P2P
6/29/2016 8 Bridges Hudson River Swim Newburgh Beacon to Bear Mountain 15.0 mi River / P2P
7/1/2016 8 Bridges Hudson River Swim Bear Mountain to Tappan Zee 19.8 mi River / P2P
7/2/2016 8 Bridges Hudson River Swim Tappan Zee to George Washington 15.7 mi River / P2P
7/2/2016 Bridge to Bridge San Francisco, CA 10 km P2P
7/3/2016 8 Bridges Hudson River Swim George Washington to Verrazano Narrows 18.6 mi River / P2P
7/16/2016 Swim Ocean City Ocean City, MD 9 mi
7/30/2016 Kingdom Swim Lake Memphremagog, VT 10 mi Lake / 1 Loop
7/30/2016 Swim Across the Sound Bridgeport, CT 25 km Ocean / P2P
8/6/2016 Great Moose Migration Arrowrock Reservoir, ID 11 mi P2P
8/13/2016 Deer Creek 10 km Charleston, UT 10 km Lake
8/13/2016 Deer Creek 10 mile Charleston, UT 10 mi Lake
8/13/2016 Rose Pitonof Swim Brooklyn, NY 17 mi Bay / P2P
8/14/2016 Horsetooth Swim Fort Collins, CO 10 km Lake / P2P
8/15/2016 Echo Lake Swim Echo Lake, VT 12 km Lake
8/16/2016 Lake Seymour Swim Seymour Lake, VT 10 km Lake
8/17/2016 Lake Massawippi Swim Lake Massawippi, QC 9 mi Lake
8/18/2016 Lake Memphremagog Swim Lake Memphremagog, VT 10 km Lake
8/20/2016 Boston Light Swim Boston, MA 8 mi Ocean / P2P
8/21/2016 Swim to the Moon Hell, MI 10 km Lake
8/27/2016 Nanaimo Ocean Swim Newcastle Island, BC 11km Ocean
8/29/2016 Lake George Swim Hague, NY 10 km Lake
9/10/2016 In Search of Memphre Lake Memphremagog, VT 25 mi P2P
9/17/2016 Alligator Lighthouse Swim Islamorada, FL 8 mi ocean
9/17/2016 Lake George Marathon Swim Lake George, NY 32 mi Lake
10/1/2016 To the Bridge and Back Midlothian, VA 10 mi River
10/8/2016 Lake Travis Relay Austin, TX 10 mi Lake / P2P
10/8/2016 Swim the Suck Chattanooga, TN 10 mi River / P2P
10/8/2016 Georgeville or Bust Lake Memphremagog, VT 15 mi Lake / P2P
10/9/2016 Bermuda Round-the-Sound Bermuda 10 km
5/17/2014 Pensacola Bridge Swim Pensacola, FL 25 km
5/18/2014 Pensacola Bridge Swim Pensacola, FL 10 km
8/10/2014 Ederle Swim New York, NY 17.5 mi Bay / P2P
9/11/2014 Bannerman's Island Return Cold Spring, NY 11 km River
9/14/2014 Swim for the Potomac National Harbor, MD 10 km
9/20/2014 Little Red Lighthouse Swim New York, NY 10 km River / P2P
11/8/2014 Big Tortuga Willis, TX 10 km Lake
6/6/2015 Potomac River Swim Hull Neck, VA to Pt Lookout S.P., MD 7.5 mi P2P
6/6/2015 Great Salt Lake Marathon Swim Salt Lake City, UT 8 mi Saline Lake / P2P
6/20/2015 Morse Reservoir (USMS Nat.Champ) Noblesville, IN 15 km Lake / Multi-Loop
7/5/2015 Semana Nautica 6 mile Swim Santa Barbara, CA 6 mi Ocean / P2P
7/12/2015 Portland Bridge Swim Portland, OR 11 mi River / P2P
7/18/2015 Flathead Lake Swim Big Arm, Montana 10 km Lake / P2P
8/2/2015 Swim for Freedom Lake Geneva, WI 8 mi Lake / P2P
8/9/2015 Pennock Island Challenge Ketchikan, AK 8.2 mi
8/9/2015 Change Your Latitude 57˚ Sitka, AK 10 km
9/4/2015 Valley Forge Marathon Swim Bridgeport, PA river 8 miles
9/19/2015 NY Aquarium Triple Dip New York, NY 10 km Bay
9/26/2015 Swim Around Charleston Charleston, SC 12 mi
9/27/2015 La Jolla Cove 10 mile La Jolla, CA 10 mi Ocean / Multi-Loop
8/26/2017 Apostle Island Relay Bayfield, WI 20 mi Lake
2016 TBD Brigantine Beach Swim Brigantine, NJ 10 km ocean
2016 TBD Manhattan Island Marathon Swim New York, NY 28.5 mi Circumnavigation

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