Ranked from data
Warmest triathlon swims
Open water triathlons ranked by typical water temperature on race day, warmest first. Above 78°F a wetsuit makes you ineligible for age-group awards, and at 84°F they are not allowed.
50
races ranked
0
states with their own list
| # | Race | Where | Next date | Typical water | Range and where |
|---|---|---|---|---|---|
| 1 | TriKBSprint Triathlon, Olympic Triathlon, Duathlon, Aquabike | Key Biscayne, Florida | TBA | 88°F | 87 to 91°F, Virginia Key |
| 2 | Key Biscayne Triathlon #1Sprint Triathlon, Olympic Triathlon, Duathlon, Aquabike | Key Biscayne, Florida | TBA | 88°F | 87 to 91°F, Virginia Key |
| 3 | Fort De Soto Triathlon Series #3Sprint Triathlon, Olympic Triathlon, Duathlon, Aquabike | St. Petersburg, Florida | TBA | 88°F | 86 to 89°F, St. Petersburg |
| 4 | Key Biscayne Triathlon Trilogy #2Sprint Triathlon, Olympic Triathlon, Duathlon, Aquabike | Key Biscayne, Florida | TBA | 88°F | 86 to 90°F, Virginia Key |
| 5 | Lake Nona Tri-Nona Triathlon Series Race 2Sprint Triathlon, Duathlon, Aquabike | Orlando, Florida | TBA | 87°F | 85 to 89°F, Lake Nona |
| 6 | Game On! ManateeMan TriathlonSprint Triathlon, Olympic Triathlon, Duathlon, Aquabike | Cape Coral, Florida | TBA | 87°F | 84 to 89°F, Fort Myers |
| 7 | Lake Nona Tri-Nona Triathlon Series Race 1Sprint Triathlon, Duathlon, Aquabike | Orlando, Florida | TBA | 87°F | 86 to 88°F, Lake Nona |
| 8 | Tampa Bay BABES Triathlon | June 28, 2026Sprint Triathlon, Duathlon, Aquabike | Tierra Verde, Florida | TBA | 87°F | 85 to 89°F, St. Petersburg |
| 9 | Marble Falls TriathlonTriathlon | Marble Falls, Texas | TBA | 86°F | 85 to 88°F, Lake Marble Falls |
| 10 | Bay St. Louis Sprint TriathlonSprint Triathlon | Bay Saint Louis, Mississippi | TBA | 86°F | 82 to 88°F, Bay Waveland Yacht Club |
| 11 | Game On! Palm Beaches TriathlonSprint Triathlon, Duathlon, Aquabike | Singer Island, Florida | TBA | 86°F | 84 to 87°F, Lake Worth Pier, Atlantic Ocean |
| 12 | Tarpon Springs Sprint Triathlon/Duathlon/Aquabike/5KSuper Sprint Triathlon, Sprint Triathlon, Olympic Triathlon, Duathlon, Aquabike, 5K | Tarpon Springs, Florida | Sep 18, 2027 | 86°F | 83 to 89°F, Clearwater Beach |
| 13 | Cultivation Nation TriSprint Triathlon | Wiggins, Mississippi | TBA | 86°F | 83 to 88°F, Flint Creek Reservoir |
| 14 | Tri-Now Beginner Triathlon Training ProgramSprint Triathlon | Dallas, Texas | TBA | 86°F | 81 to 89°F, White Rock Lake |
| 15 | High Point Sprint Triathlon and Youth TriathlonKids Triathlon, Sprint Triathlon, Aquabike | High Point, North Carolina | TBA | 85°F | 83 to 88°F, Oak Hollow Lake |
| 16 | Broken Sword Triathlon & Kid's TriKids Triathlon, Sprint Triathlon | Clarksville, Arkansas | TBA | 85°F | 83 to 88°F, Lake Ludwig |
| 17 | Callaway Fitness Series Sprint Triathlon and DuathlonSprint Triathlon, Duathlon | Pine Mountain, Georgia | TBA | 85°F | 83 to 88°F, Robin Lake |
| 18 | Dickson Olympic and Sprint Triathlon and 5kSprint Triathlon, Olympic Triathlon, Aquabike, 5K | Burns, Tennessee | TBA | 85°F | 81 to 87°F, Acorn Lake |
| 19 | Texas City Triathlon, Duathlon, & AquabikeSuper Sprint Triathlon, Sprint Triathlon, Duathlon, Aquabike | Texas City, Texas | Sep 18, 2027 | 85°F | 82 to 87°F, Galveston Railroad Bridge |
| 20 | CHRISTUS Trinity Mother Frances Rose City TriathlonSprint Triathlon | Whitehouse, Texas | TBA | 84°F | 80 to 87°F, Lake Tyler |
| 21 | Lake Lenape Tri/Aqua/DuSprint Triathlon, Duathlon, Aquabike, Aquathlon | Mays Landing, New Jersey | TBA | 84°F | 82 to 87°F, Lake Lenape |
| 22 | Indy Sprint Tri #1Sprint Triathlon, Duathlon, Aquabike | Indianapolis, Indiana | TBA | 84°F | 81 to 87°F, Eagle Creek Reservoir |
| 23 | Tri PTC Sprint TriathlonSprint Triathlon, Aquabike | Peachtree City, Georgia | TBA | 84°F | 81 to 86°F, Lake Peachtree |
| 24 | Indy Sprint Tri (July 18)Sprint Triathlon, Duathlon, Aquabike | Indianapolis, Indiana | TBA | 84°F | 80 to 87°F, Eagle Creek Reservoir |
| 25 | DQ Laurel Lake Triathlon, Duathlon, Aquabike, Aquathlon, & Super Sprint Triathlon in honor of William Laubengeyer *#Super Sprint Triathlon, Sprint Triathlon, Duathlon, Aquathlon, Other | Millville, New Jersey | Jul 24, 2027 | 84°F | 81 to 86°F, Laurel Lake |
| 26 | Fort DeSoto SeriesSprint Triathlon, Olympic Triathlon, Duathlon, Aquabike | Saint Petersburg, Florida | TBA | 84°F | 81 to 86°F, St. Petersburg |
| 27 | Fort De Soto Triathlon Series #2Sprint Triathlon, Olympic Triathlon, Duathlon, Aquabike | St. Petersburg, Florida | TBA | 84°F | 81 to 86°F, St. Petersburg |
| 28 | Diamond in the Rough TriathlonSprint Triathlon, Olympic Triathlon, Aquabike | Perryville, Maryland | TBA | 83°F | 81 to 86°F, Chesapeake City |
| 29 | Morse Park TriathlonSprint Triathlon, Duathlon, Aquabike | Noblesville, Indiana | TBA | 83°F | 79 to 87°F, Morse Reservoir |
| 30 | 305 TriathlonSprint Triathlon, Olympic Triathlon, Duathlon, Aquabike | Key Biscayne, Florida | TBA | 83°F | 81 to 86°F, Virginia Key |
| 31 | Mack Cycle 305 TriathlonSprint Triathlon, Olympic Triathlon, Duathlon, Aquabike | Key Biscayne, Florida | TBA | 83°F | 81 to 86°F, Virginia Key |
| 32 | Lake Lure Sprint TriathlonSprint Triathlon | Lake Lure, North Carolina | TBA | 83°F | 80 to 86°F, Lake Lure |
| 33 | Montclair TriathlonKids Triathlon, Sprint Triathlon, Duathlon, Aquabike | Montclair, Virginia | TBA | 83°F | 81 to 84°F, Lake Montclair |
| 34 | Badin Lake TriathlonSprint Triathlon | Badin, North Carolina | TBA | 83°F | 80 to 87°F, Badin Lake |
| 35 | 22nd Annual Steelman Racing Triathlon - August 2nd, 2026Sprint Triathlon, Olympic Triathlon, Aquabike | Quakertown, Pennsylvania | TBA | 82°F | 81 to 85°F, Lake Nockamixon |
| 36 | White Lake Fall International & Double SprintSprint Triathlon, Olympic Triathlon, Aquabike | White Lake, North Carolina | TBA | 82°F | 77 to 84°F, White Lake |
| 37 | Dunedin Rotary TriathlonSuper Sprint Triathlon, Duathlon, Aquabike | Dunedin, Florida | May 16, 2027 | 82°F | 79 to 85°F, Clearwater Beach |
| 38 | Millerton Madness TriathlonSuper Sprint Triathlon, 5K | Friant, California | Aug 22, 2027 | 82°F | 81 to 85°F, Millerton Lake |
| 39 | TRI Mountain LakeSprint Triathlon, Aquabike | Liberty Township, New Jersey | TBA | 82°F | 80 to 84°F, Mountain Lake |
| 40 | Rocky Gap Off-Road Triathlon, Duathlon, Aqua Bike, and RelaySprint Triathlon, Triathlon, Duathlon, Aquabike | Flintstone, Maryland | TBA | 82°F | 81 to 83°F, Lake Habeeb |
| 41 | Belews Lake Olympic TriathlonOlympic Triathlon, Duathlon, Aquabike | Stokesdale, North Carolina | TBA | 82°F | 75 to 84°F, Belews Lake |
| 42 | XTERRA Branson Mountain Man Off-Road TriathlonSprint Triathlon, Full Iron Triathlon | Branson, Missouri | TBA | 82°F | 79 to 84°F, Table Rock Lake |
| 43 | BuffmanKids Triathlon, Sprint Triathlon, Olympic Triathlon | Ransom Canyon, Texas | TBA | 81°F | 80 to 83°F, Lake Ransom Canyon |
| 44 | Saluki TriathlonSprint Triathlon | Carbondale, Illinois | TBA | 81°F | 78 to 87°F, Campus Lake |
| 45 | North East TriathlonSprint Triathlon, Olympic Triathlon, Aquabike | North East, Maryland | TBA | 81°F | 78 to 86°F, Chesapeake City |
| 46 | Colonial Beach TriathlonSprint Triathlon, Olympic Triathlon, Duathlon, Aquabike | Colonial Beach, Virginia | TBA | 81°F | 79 to 84°F, Dahlgren |
| 47 | Winchester Lakeside TriathlonsSprint Triathlon, Olympic Triathlon, Duathlon, Aquabike | Winchester, Tennessee | TBA | 81°F | 76 to 85°F, Tims Ford Lake |
| 48 | Lake Quivira TriathlonSprint Triathlon, Kids | Lake Quivira, Kansas | TBA | 81°F | 78 to 85°F, Quivira Lake |
| 49 | APPLEMAN TRIATHLON/DUATHLON/AQUABIKE CHARITY RACESprint Triathlon, Duathlon, Aquabike | Littleton, Massachusetts | TBA | 81°F | 79 to 84°F, Long Pond |
| 50 | TridelSol Olympic, Sprint & Super Sprint Triathlon, Duathlon, Aquabike, Relay & Swim Only EventSuper Sprint Triathlon, Sprint Triathlon, Olympic Triathlon, Duathlon, Aquabike, 1 Mile | Middleville, Michigan | Jul 18, 2027 | 81°F | 77 to 83°F, Barlow Lake |
More rankings
- Largest triathlons
- Largest sprint triathlons
- Largest olympic triathlons
- Largest duathlons
- Largest gravel races
- Largest bike rides
- Cheapest triathlons
- Cheapest sprint triathlons
- Cheapest olympic triathlons
- Cheapest duathlons
- Cheapest aquabikes
- Cheapest gravel races
- Flattest triathlons
- Hilliest triathlons
- Hilliest gravel races
- Hilliest bike rides
- Flattest bike rides
- Coldest swims
Typical water temperature for the week of race day: a model estimate for lakes (USGS lake temperature model, 2011 to 2020) and station readings for coasts (NOAA, 2016 to 2025). The range is the coolest and warmest of those years. The race's own reading on race morning decides wetsuit rules.