U.S. Marathon Swim Calendar - 2023

List of organized marathon swim races in the United States and nearby locations. 10 km (6 miles) or longer. Confirmed 2023 dates.
DateSwimLocationDistanceResultsRules
2023-04-16 Swim Miami Miami, FL 10 km results categories
2023-04-26 S.C.A.R. Swim Challenge Saguaro Lake, AZ 9.5 mi results trad (skins) only
2023-04-27 S.C.A.R. Swim Challenge Canyon Lake, AZ 9 mi results trad (skins) only
2023-04-28 S.C.A.R. Swim Challenge Apache Lake, AZ 17 mi results trad (skins) only
2023-04-29 S.C.A.R. Swim Challenge Roosevelt Lake, AZ 10 km results trad (skins) only
2023-05-06 O'Crud Swim Mount Holly, NC 10 km results categories
2023-05-13 Low Country Splash Charleston, SC 6 mi categories
2023-06-03 Swim Around Key West Key West, FL 12 mi results trad (skins) only
2023-06-10 Del Valle Open Water Festival Livermore, CA 10 km results USMS
2023-06-17 FKCC Swim Around Key West Key West, FL 12 mi results trad (skins) only
2023-06-17 END-WET Grand Forks, ND to Oslo, MN 36 mi results categories
2023-07-09 Semana Nautica 6 mile Swim Santa Barbara, CA 6 mi results trad (skins) only
2023-07-09 Portland Bridge Swim Portland, OR 11 mi results USMS + tow floats
2023-07-15 Swim Ocean City Ocean City, MD 9 mi results trad (skins) only
2023-07-15 Swim with a Mission Newfound Lake, NH 10 km wetsuits allowed / no categories
2023-07-15 Finger Lakes Challenge Seneca Lake, NY 6 mi, 12 mi results categories
2023-07-15 Applegate Lake Jacksonville, OR 10 km results USMS
2023-07-15 Bear Lake Monster Swim Bear Lake, UT 10 km results categories
2023-07-29 Cornhusker State Games Raymond, NE 10 km results USA-S
2023-07-29 Swim Across the Sound Bridgeport, CT 25 km results trad (skins) only
2023-07-29 Kingdom Swim Lake Memphremagog, VT 10 mi results categories
2023-08-05 North Shore 10K Oahu, HI 10 km results skins only + FINA suits, masks, snorkels, floats allowed
2023-08-07 Swim the Kingdom - Lac Massawippi Lake Massawippi, QC 9 mi results categories
2023-08-08 Swim the Kingdom - Lake Seymour Seymour Lake, VT 10 km categories
2023-08-09 Swim the Kingdom - Echo Lake Echo Lake, VT 12 km categories
2023-08-10 Swim the Kingdom - Lake Memphremagog (Clubhous) Lake Memphremagog, VT 10 km categories
2023-08-12 Deer Creek Marathon Swim Charleston, UT 10 km, 10 mi results categories
2023-08-13 Change Your Latitude 57˚ Sitka, AK 10 km results categories, skin swimmers must provide proof of cold water experience
2023-08-19 Boston Light Swim Boston, MA 8 mi results trad (skins) only
2023-08-19 Lake George Swim Hague, NY 10 km results USMS
2023-08-20 Swim to the Moon Hell, MI 10 km results categories + floats allowed
2023-08-26 The Castle Wellington Lake, CO 10 km results categories
2023-08-26 3 Rivers Marathon Swim Pittsburgh, PA 30 km results trad (skins) only
2023-08-26 Rose Pitonof Swim New York, NY 17 mi results trad (skins) only
2023-09-01 Bender Memorial Marathon Swim Bridgeport, PA 6/8 mi, 15km results
2023-09-09 Alligator Lighthouse Swim Islamorada, FL 9 mi results skins only + FINA suits
2023-09-10 Horsetooth Swim Fort Collins, CO 10 km results categories
2023-09-17 Bridges to Bluffs Knoxville, TN 10 km results categories (wetsuit required if <60.8F)
2023-09-24 Swim Around Charleston Charleston, SC 12 mi results trad (skins) only
2023-09-24 La Jolla Cove 10 mile La Jolla, CA 10 mi results categories
2023-10-07 Swim the Suck Chattanooga, TN 10 mi results trad (skins) only
2023-10-08 Bermuda Round-the-Sound Bermuda 10 km results skins only + FINA suits
2023-canceled Great Salt Lake Marathon Swim Salt Lake City, UT 10 km results

Organized Solo / Small Group Swims

2023 dates not yet known

DateSwimLocationDistancePast
2022-04-02 Honeymoon Island Swim Dunedin, FL 8 mi results
2022-06-04 Madeira Beach Saint Petersburg, FL 10 km
2022-08-09 Jim Whelan Atlantic City Around-the-Island Atlantic City, NJ 22.75 mi results
2022-08-13 Minnetonka Challenge Lake Minnetonka, MN 10 mi results
2022-10-08 Lake Travis Relay Austin, TX 10 mi results
2022-canceled Capitola-Santa Cruz Pier-to-Pier Santa Cruz, CA 10 km results

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