United States
- Alabama 9
- Alaska 3
- Arizona 13
- Arkansas 1
- California 63
- Colorado 13
- Connecticut 3
- Delaware 2
- District of Columbia 1
- Florida 44
- Georgia 2
- Hawaii 5
- Idaho 7
- Illinois 16
- Indiana 7
- Iowa 6
- Kansas 7
- Kentucky 5
- Louisiana 6
- Maine 3
- Maryland 13
- Massachusetts 7
- Michigan 13
- Minnesota 7
- Mississippi 5
- Missouri 12
- Montana 6
- Nebraska 4
- Nevada 3
- New Hampshire 1
- New Jersey 10
- New Mexico 4
- New York 48
- North Carolina 19
- North Dakota
- Ohio 11
- Oklahoma 3
- Oregon 10
- Pennsylvania 20
- Puerto Rico 1
- Rhode Island 1
- South Carolina 10
- South Dakota
- Tennessee 8
- Texas 47
- Utah 15
- Vermont 1
- Virginia 27
- Washington 10
- West Virginia 2
- Wisconsin 21
- Wyoming 1
Triathlon Calendar United States 2026-2027
Monthly updates for United States
Get new running races (and updates) in your inbox every month.
Explore the best triathlons in the United States for 2026-2027! Our updated list features 551 exciting races across the country. Find your next race in the United States below and join the running community at these great events!
October 2026
A high-altitude ÖTILLÖ swimrun in Fort Collins combining open-water swims in Horsetooth Reservoir with trail runs in Lory State Park across three race distances.
A multisport event at Marine Creek Public Boat Ramp in Fort Worth on October 4, 2026 offering sprint and Olympic triathlons, a duathlon, relay team options, and a virtual race with mailed t shirt and finisher medal.
IRONMAN 70.3 Waco is a half distance triathlon in Waco, Texas featuring a swim in the Brazos River and a finish on the historic Waco Suspension Bridge.
MightyMan Montauk on October 4, 2026 in Montauk, NY offers Olympic, Sprint and Aquabike triathlon options around Fort Pond with a Navy Beach swim backup.
A pool-to-road triathlon at the Mattoon Area Family YMCA with a 275 yard swim, 12 mile bike and 3.1 mile run; individual and team entries and age-group awards.
Monthly updates for United States
Get new running races (and updates) in your inbox every month.
HoosierMan Triathlon on October 4, 2026 at Lake Lemon near Bloomington, Indiana offers sprint and Olympic triathlons, a sprint duathlon, aquabike options and team relays. The USAT sanctioned, chip timed event features a lake swim, rolling bike course..
A Central Park event combining running, cycling, and a lake rowing relay with options for solo duathletes or two-person boat relay teams, open to athletes 18 and older.
Sugarman is a multi discipline swim bike and run event at Sugar Mill Pond in Youngsville LA featuring adult and youth races plus awards and post race amenities.
Off-road duathlons and mountain bike races at Atwood Park Trail System in Rockford with chip timing, meals, and proceeds supporting local trail building.
Boilerman is an annual Olympic distance triathlon at White Oaks Campground on Lake Freeman, offering individual, collegiate and relay races with standard Olympic distances.
A hybrid event on October 4, 2026 with an in-person kayak plus run segment at The Washington Canoe Club and a 90 minute global virtual challenge.
A youth and family triathlon in Round Rock on October 4, 2026, with youth, family and adaptive swim bike run events benefiting Colin's Hope.
Multi-day ultra triathlon weekend at Lake Anna State Park with full and half distance options, short loop course, crew access every loop, and 24-hour medical support.
Multisport event at Lake Anna on October 10, 2026 featuring Olympic and Sprint triathlons, aquabike races, and 2 to 3 person relays with a warmer open water swim.
Duathlon at Cedar Creek Park, Seaford on Oct 10, 2026: 1.1 mi run, 11 mi bike (4 loops), 1.1 mi run with individual, relay, family, high school, and virtual options.
Multi-discipline adventure race in Jamestown VA with 15 hour and 5 hour options featuring paddling, biking and trekking through historic parks.
Multisport races at TVA Melton Hill Dam featuring sprint, Olympic and half iron triathlons, a sprint duathlon, aqua bike options and relays with looped swim, bike and run courses.
A run-bike-run duathlon at Redstone Arsenal where finish times are compared to the International Space Station's 91 minute 12 second orbit; individual and relay entries have specified registration windows and base access requirements.
A USA Triathlon sanctioned sprint event in Oloh, Mississippi on October 10, 2026 offering swim, a 21.3 mile bike and a 3 mile run with divisions for beginners, duathlon and relays; helmets and photo ID are required.
An Olympic-distance multisport event in New Roads, LA featuring a 1.5K swim, 40K bike and 10K run with aquabike, duathlon and relay divisions, limited to 300 entries and finishing with awards and a finish fest.