United States
- Alabama 11
- Alaska 4
- Arizona 18
- Arkansas 3
- California 65
- Colorado 18
- Connecticut 8
- Delaware 1
- District of Columbia
- Florida 42
- Georgia 11
- Hawaii 3
- Idaho 12
- Illinois 20
- Indiana 18
- Iowa 15
- Kansas 5
- Kentucky 11
- Louisiana 5
- Maine 6
- Maryland 15
- Massachusetts 15
- Michigan 21
- Minnesota 18
- Mississippi 6
- Missouri 4
- Montana 3
- Nebraska 4
- Nevada 2
- New Hampshire 4
- New Jersey 14
- New Mexico 3
- New York 52
- North Carolina 25
- North Dakota
- Ohio 17
- Oklahoma 5
- Oregon 5
- Pennsylvania 15
- Puerto Rico 2
- Rhode Island 1
- South Carolina 9
- South Dakota 2
- Tennessee 14
- Texas 46
- Utah 11
- Vermont 2
- Virginia 33
- Washington 14
- West Virginia 2
- Wisconsin 19
- Wyoming 2
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 655 exciting races across the country. Find your next race in the United States below and join the running community at these great events!
September 2026
Community triathlon at Town Park at Point Lookout on September 19, 2026 featuring a half mile swim, six mile bike and two mile run.
A USARA-sanctioned 12 hour team adventure race in Sausalito combining paddling, mountain biking, and trekking across the Marin Headlands and San Francisco Bay with map-and-compass navigation and a central transition area.
A one day, multi discipline adventure race in Greenfield, MA on September 19, 2026 combining mountain biking, trekking and paddling over a 15 hour course. The event is USARA sanctioned and requires teams to supply boats or follow an alternate route.
A community fundraising event at Oakdale Trails featuring timed mountain bike single-track races, a 5k cross-country run and ruck, youth races, vendors, and activities to support Friends of Oakdale Trails.
A dry triathlon in Billings on September 19, 2026, combining rowing, bodyweight reps, and a 5 km run or a shorter sprint option. Registration opens July 1, 2026; the entry fee is $50 and racers receive a $25 Scheels gift card.
A combined 5K trail run and 3K paddle at Chatfield State Park in Littleton, Colorado, with limited participant slots and paddleboard rentals available. Categories include men's, women's, and a couples relay where teammates split the run and paddle.
IRONMAN 70.3 Michigan in Frankfort, MI features a Betsie Bay swim, a bike on historic highway M22 through Benzie County and a two loop 13.1 mile run.
A triathlon at Devil's Lake in Baraboo, Wisconsin on September 20, 2026, offering sprint individual, sprint relay, and a Wisconsin Triathlon Series entry. Distances include a 400 m swim, a 15 mile bike, and a 5K run.
Multisport races at Lake Welch Beach in Harriman State Park combine a 0.5 mile lake swim, a 15 mile bike loop, and a 2 mile run. Adult races have entry fees while junior participation is free.
Sprint triathlon at Marsh Creek State Park with a time trial swim in Marsh Creek Lake, a single 20 km bike loop and a 5 km run with lake views.
A multi-race day at Robious Landing Park in Midlothian, Virginia featuring sprint triathlon, duathlon, aquabike, youth races, and an NCAA draft legal collegiate cup. All finishers receive a medal and overall and age-group awards are presented.
The Reston Triathlon is an Olympic-distance race in Reston, Virginia, with a 1500 m open-water swim in Lake Audubon, a 25-mile bike and a 10K run. The program also includes an aquabike and an Olympic relay option.
Multisport races at Bayview Park on Long Beach Island on September 20, 2026 feature triathlon, duathlon, aquabike and relay options, with bay swims and flat road bike and run courses, awards across multiple divisions, and USAT rules in effect.
Experience a beach start at Illinois largest man made lake followed by a flat bike course and a finish over the dam spillway. This event offers individual and relay options across triathlon duathlon and aquabike distances.
A sprint triathlon and duathlon at Horseneck Beach State Reservation on September 20, 2026 featuring a 1/3 mile swim, a 13.3 mile bike through Westport farm country, and a 3.1 mile run finishing along the beach path.
A multisport event at Stony Creek Metropark in Shelby Township, Michigan featuring Olympic, Sprint and Super Sprint triathlon formats, duathlon and aquabike races plus relay options. Registration opens November 27 2025.
A multi-format community event at Kiel High School featuring full and short sprint triathlons, aquabike options, team relays, a Kid's Triathlon, and a 100 yard Raider Dash, with concessions on site and proceeds to the Kiel High School Booster Club.
Late season triathlon at White Bear Lake offering Sprint and Olympic distances, Aqua Bike options, relay teams, free photography, awards and a post-race barbecue.
A multisport event at Twin Cove Point, Birch Lake offering Sprint and Olympic triathlons, relays, aquabike, and swim only options. USAT wetsuit rules apply and registrations can be deferred for a fee.
A multisport event at Camp Manitou-lin in Middleville Michigan on September 20 2026 offering sprint and Olympic triathlon duathlon and aquabike formats plus relays and a month long virtual option.