Choose your start line.
Plan the work.
Browse upcoming triathlons by location, date and race format. Review the event details, confirm registration with the organizer, and use your start line as a clear planning point for swim, bike and run training.
Start lines ahead
Find an event that fits your season. Compare dates, locations and formats, then visit the official organizer when you are ready to confirm details or register.
ATW Big East & Maldon Triathlon
ATW Big East & Maldon Triathlon is a sprint, half triathlon at Promenade Park, Park Drive, Maldon, Essex, CM9 5JQ, United Kingdom.
IRONMAN 70.3 Santa Cruz
A Santa Cruz middle-distance race with an ocean swim by the wharf, rolling Highway 1 riding and a flat coastal-bluff run.
Woking Autumn Triathlon
Woking Autumn Triathlon is a sprint triathlon at Woking Leisure Centre, Woking Park, Kingfield Road, Woking, GU22 9BA, United Kingdom.
IRONMAN Maryland
A full-distance Cambridge race pairing a Choptank River swim with Eastern Shore riding near Blackwater National Wildlife Refuge and a downtown run.
ATW St Neots Triathlon - Race 3
ATW St Neots Triathlon - Race 3 is a super sprint, sprint triathlon at Riverside Park, Regatta Meadow, St Neots, Cambridgeshire, PE19 7AB, United Kingdom.
ATW Grafham Triathlon
ATW Grafham Triathlon is a sprint triathlon at Grafham Water Visitor Centre, Marlow Park, Grafham, Huntingdon, Cambs, PE28 0BH, United Kingdom.
Dorney Triathlon - September
Dorney Triathlon - September is a super sprint, sprint, olympic triathlon at Dorney Lake, Court Lane, off Lake End Road, Windsor SL4 6FJ, United Kingdom.
IRONMAN 70.3 Augusta
A middle-distance Augusta race using a downriver Savannah River swim, rural riding and a flat run along the North Augusta Greeneway.
IRONMAN 70.3 Waco
The Heart of Texas middle-distance race brings athletes to the Brazos River and a finish at Waco’s historic Suspension Bridge.
Supertri Toulouse Triathlon
Supertri Toulouse Triathlon is a super sprint, sprint triathlon at Toulouse, France.
IRONMAN 70.3 North Carolina
The Beach to Battleship middle-distance course starts at Wrightsville Beach and finishes near the Battleship North Carolina.
IRONMAN California
A full-distance Sacramento race with a downriver Sacramento River swim, fast and flat riding through farmland and wine country, and a Capitol finish.
IRONMAN Florida
A full-distance Panama City Beach race built around an ocean swim and bike and run courses in the surrounding coastal area.
IRONMAN Cozumel Latin American Championship
An island full-distance race in Cozumel and the 2026 IRONMAN Latin American Championship, with an ocean swim.
Challenge Sir Bani Yas
A protected-island Challenge Family race offering full, middle and standard distances on Sir Bani Yas in Abu Dhabi.
Challenge Wanaka
A South Island destination race in Wanaka with Challenge Family’s 100-distance format.
Gold Coast T100
A Gold Coast weekend combining a 100-kilometre race and Olympic triathlon between Broadwater Parklands and Surfers Paradise.
IRONMAN 70.3 Oceanside
An Oceanside middle-distance race with a protected-harbor swim, Camp Pendleton riding and a Pacific-facing Strand run.
Anfi Challenge Mogán-Gran Canaria
A Gran Canaria Challenge Family race with 100-distance and standard categories around Anfi del Mar and Playa de Mogán.
IRONMAN Texas
A full-distance race based in The Woodlands, with a lake swim and a confirmed April 2027 date.
St. Anthony's Triathlon
A long-running St. Petersburg waterfront weekend with dedicated Olympic and Sprint triathlons and pro and age-group competition.
ATW Box End Mixed Team Relay
ATW Box End Mixed Team Relay is a other triathlon at Box End Lakes,Box End Rd, Bedford MK43 8RN, United Kingdom.
The Championship
Challenge Family’s Šamorín championship weekend combines a 100-distance race with standard and Sprint community categories.
ATW Box End Triathlon
ATW Box End Triathlon is a sprint triathlon at Box End Lakes,Box End Rd, Bedford MK43 8RN, United Kingdom.
Ascension Seton Supertri Austin Triathlon
Ascension Seton Supertri Austin Triathlon is a sprint, olympic triathlon at Austin, TX USA.
IRONMAN 70.3 Hawaiʻi
A Kohala Coast middle-distance race framed by Hawaiʻi’s volcanic and coastal landscape and Aloha Spirit.
Bass Lake Yosemite Triathlon
A Yosemite-area lake race offering published Olympic and Sprint courses at Bass Lake near Oakhurst.
Supertri Blenheim Triathlon
Supertri Blenheim Triathlon is a sprint triathlon at Blenheim, Oxfordshire, UK.
ATW Grafman Middle Distance Triathlon
ATW Grafman Middle Distance Triathlon is a half triathlon at Grafham Water Visitor Centre, Marlow Park, Grafham, Huntingdon, Cambs, PE28 0BH, United Kingdom.
2027 Cal Tri DC
A Cal Tri weekend near Washington, DC offering Sprint and Olympic triathlons at Sweden Point Marina in General Smallwood State Park.
DATEV Challenge Roth
A full-distance Challenge Family classic in Roth, featuring the Main–Danube Canal, the Solarer Berg and a high-atmosphere Bavarian finish.
Cal Tri Williamsburg
A flat-and-fast Cal Tri destination race at Jamestown Beach Event Park with Sprint and Olympic options.
Mountain Lakes Triathlon
The 40th-anniversary Mountain Lakes Triathlon offers Olympic and Sprint courses on Lake Guntersville in Guntersville, Alabama.
IRONMAN Lake Placid
An Adirondack full-distance race in Lake Placid, featuring a lake swim and a course overview linked by the organizer.
Supertri Toronto Triathlon
Supertri Toronto Triathlon is a sprint, olympic triathlon at Toronto, Canada.
2027 USA Triathlon Nationals
USA Triathlon’s 2027 Nationals bring Sprint, Olympic, draft-legal and mixed-relay racing to Des Moines parks and waterways.
ATW First to Full Triathlon Festival
ATW First to Full Triathlon Festival is a sprint, half, full triathlon at Riverside Park, Regatta Meadow, St Neots, Cambridgeshire, PE19 7AB, United Kingdom.
Vancouver T100 Triathlon
A Vancouver festival with Sprint and Olympic races on August 14 and a T100 race on August 15, using ocean swimming and closed-road racing.
ATW Odyssey at Box End Triathlon
ATW Odyssey at Box End Triathlon is a sprint, olympic triathlon at Box End Lakes,Box End Rd, Bedford MK43 8RN, United Kingdom.
Supertri Long Beach Triathlon
Supertri Long Beach Triathlon is a sprint, olympic triathlon at Long Beach, CA USA.
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Past Events
Previous editions remain available at their permanent event URLs for reference. Confirm current details with the official organizer.
A race gives your training a destination.
A confirmed race date helps turn broad goals into practical milestones.
Swim, bike and run each bring different demands to the weeks before race day.
Travel, weather and everyday commitments can change the route to the start line.
Your path can adapt.
Finding and preparing for an event
How do I choose my next triathlon?
Start with a race format, date and location that fit your goals and available preparation time. Review the organizer details before you commit to registration or travel.
What are the main triathlon race formats?
Sprint and Olympic races are common shorter formats. Middle distance events are often called 70.3, while full distance events are often called 140.6. Organizer naming and distances can vary.
Where does the event information come from?
Dates, locations, formats and registration destinations are checked against organizer-published pages. Event information can change, so confirm it directly before making plans.
Does TriDot organize these events?
No. This is an independent discovery resource. Registration, race operations and final event information remain with each official organizer.