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

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©2015 Marathon Swimmers Federation