United States
- Alabama 13
- Alaska 11
- Arizona 19
- Arkansas 5
- California 61
- Colorado 21
- Connecticut 21
- Delaware 3
- District of Columbia
- Florida 47
- Georgia 16
- Hawaii 3
- Idaho 15
- Illinois 26
- Indiana 26
- Iowa 22
- Kansas 7
- Kentucky 13
- Louisiana 8
- Maine 11
- Maryland 17
- Massachusetts 21
- Michigan 35
- Minnesota 26
- Mississippi 5
- Missouri 9
- Montana 10
- Nebraska 4
- Nevada 2
- New Hampshire 4
- New Jersey 28
- New Mexico 7
- New York 66
- North Carolina 35
- North Dakota 1
- Ohio 23
- Oklahoma 8
- Oregon 8
- Pennsylvania 29
- Puerto Rico 2
- Rhode Island 3
- South Carolina 15
- South Dakota 3
- Tennessee 20
- Texas 55
- Utah 15
- Vermont 3
- Virginia 38
- Washington 22
- West Virginia 6
- Wisconsin 32
- Wyoming 4
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 895 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
A multi-discipline race day at Tims Ford Lake offering sprint and Olympic triathlon, duathlon and aquabike options, plus relays and weight-class divisions. The event is USA Triathlon sanctioned and follows a no refund policy with insurance available.
A 12 hour, 40-mile adventure race at Lake James State Park near Linville Gorge on September 19, 2026. Teams of one to four navigate trails, bushwhack, bike, and paddle to collect unmanned checkpoint punches.
Rexburg RUSH Triathlon takes place at Wakeside Lake in Rexburg, Idaho on September 19, 2026. The event includes sprint and Olympic triathlon distances, duathlon options, 5K and 10K runs, and a sprint team division.
A community race day in Morrison, Illinois with a 5K out-and-back, a duathlon including a 21-mile bike, children's fun runs, and a color run; courses start at Morrison High School and include rolling hills and on-course water stops.
Partner with a friend for a unique triathlon featuring canoeing on the Duck River followed by mountain biking and trail running through Chickasaw Trace County Park.
Sea Cliff Triathlon on 09/19/2026 takes place at Harry Tappen Beach and offers individual, youth, and several relay formats with swim, bike, and run legs and specified team rules and fees.
Rise & Run in Denmark, WI combines a run-bike-run duathlon with individual and two or three person relays plus a free one mile fun run where leashed dogs and strollers are allowed; proceeds support Arise missions.
A point-to-point adventure race in Nickerson State Park combining running, cycling, navigation and swim or paddleboard segments; racers compete solo or in teams of two to four on varied trail and water terrain.
A sprint triathlon at Town Park at Point Lookout on September 19, 2026 featuring a 1/2 mile swim, 6 mile bike and 2 mile run for adults 18 and older, with resident and veteran pricing tiers and no race day sign ups.
A 12 hour team adventure race based in Sausalito that combines trekking, mountain biking and paddling. Teams navigate by map and compass to collect checkpoints across the Marin Headlands, Angel Island and San Francisco Bay.
A single day multi discipline adventure race in Greenfield MA featuring mountain biking, trail running, paddling, and map and compass navigation with BYOB paddling and a modified rogaine course format.
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.
IRONMAN 70.3 Michigan on September 20, 2026 in Frankfort, Michigan features a Betsie Bay swim, a bike route along historic M22 through Benzie County and a 13.1 mile two out and back run on paved trails and roads.
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.
A sprint triathlon at Marsh Creek State Park with a 750m lake swim, a single-loop 20K bike through forested roads, and a one-loop 5K run along the lake. The event is USA Triathlon sanctioned and includes multiple race categories.
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.