United States
- Alabama 8
- Alaska 4
- Arizona 15
- Arkansas 2
- California 61
- Colorado 16
- Connecticut 3
- Delaware 2
- District of Columbia 1
- Florida 40
- Georgia 6
- Hawaii 4
- Idaho 6
- Illinois 18
- Indiana 11
- Iowa 11
- Kansas 1
- Kentucky 6
- Louisiana 5
- Maine 2
- Maryland 11
- Massachusetts 12
- Michigan 18
- Minnesota 7
- Mississippi 5
- Missouri 8
- Montana 3
- Nebraska 4
- Nevada 3
- New Hampshire 3
- New Jersey 8
- New Mexico 4
- New York 51
- North Carolina 23
- North Dakota
- Ohio 12
- Oklahoma 4
- Oregon 5
- Pennsylvania 17
- Puerto Rico 1
- Rhode Island 1
- South Carolina 8
- South Dakota
- Tennessee 12
- Texas 48
- Utah 14
- Vermont 1
- Virginia 27
- Washington 10
- West Virginia 2
- Wisconsin 22
- 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 564 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 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 is a lakeside triathlon at Wakeside Lake in Rexburg, Idaho, produced by Tri Peaks Epic Events. It is scheduled for September 2026 and has an aggregate rating of 5 from two reviews.
A community race day in Morrison featuring a duathlon, 5K, multiple kids races and a Color Run, with chip timing and age‑group awards.
A unique partner triathlon in Columbia featuring a 3.5 mile canoe, a 7.5 mile mountain bike ride, and a 2.65 mile trail run through Chickasaw Trace County Park.
Sea Cliff Triathlon at Harry Tappen Beach on September 19, 2026 features a super-sprint 400 m swim, 6 mi two lap bike and 2 mi run with individual, youth and relay divisions.
Monthly updates for United States
Get new running races (and updates) in your inbox every month.
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 multisport race in Nickerson State Park on September 19, 2026 combining trail running, road cycling and pond swims or paddling for solo or team entries.
A short-course triathlon at Town Park at Point Lookout on September 19, 2026 with a 1/2 mile swim, 6 mile bike and 2 mile run plus age-group awards.
A 12 hour USARA sanctioned adventure race in Sausalito combining kayaking, mountain biking, trekking, and map and compass navigation across Marin and San Francisco Bay.
A USARA-sanctioned, 15 hour adventure race in Greenfield, MA combining biking, trekking, paddling and map navigation for solos and teams.
A fundraising day of mountain bike and cross country races at Oakdale Trails in Lapeer, with timed adult and youth events, awards, vendors and proceeds for trail maintenance.
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.
A sprint triathlon and a family friendly 5K at Lake Mahopac on September 19, 2026, with proceeds supporting childhood cancer research.
Navigate the Broad River Greenway using GPS coordinates in an adventure race featuring land navigation and an optional paddling component for individuals and teams.
IRONMAN 70.3 Michigan in Frankfort, MI features a Betsie Bay swim, a bike route on M-22 through Benzie County and a two-loop 13.1 mile run on paved trails.
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.
USAT sanctioned triathlon and duathlon at Lake Welch Beach featuring a 0.5 mile swim, 15 mile bike loop and 2 mile run, plus race support, medals and awards.
Sprint triathlon at Marsh Creek State Park near Downingtown PA with a 750 m swim, 20K bike and 5K run around Marsh Creek Lake; event is sold out with a waitlist.
Multisport sprint and youth event at Robious Landing Park with triathlon duathlon and aquabike options plus an NCAA collegiate cup and finisher medals.
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.