United States
- Alabama 10
- Alaska 3
- Arizona 13
- Arkansas 2
- California 66
- Colorado 12
- Connecticut 3
- Delaware 3
- District of Columbia
- Florida 44
- Georgia 3
- Hawaii 5
- Idaho 7
- Illinois 16
- Indiana 5
- Iowa 9
- Kansas 7
- Kentucky 5
- Louisiana 5
- Maine 3
- Maryland 14
- Massachusetts 7
- Michigan 15
- Minnesota 7
- Mississippi 5
- Missouri 12
- Montana 6
- Nebraska 5
- Nevada 3
- New Hampshire 1
- New Jersey 14
- 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 45
- Utah 16
- Vermont 1
- Virginia 27
- Washington 12
- 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 566 exciting races across the country. Find your next race in the United States below and join the running community at these great events!
November 2026
Triathlon, duathlon and aquabike races are held at Mirada Lagoon in San Antonio FL on November 15, 2026, with sprint, international and relay options.
A campus-based event in Goleta combining collegiate and open sprint triathlons, a sprint relay, and a 5k run along the UCSB lagoon and trails.
An adventure race on November 21, 2026 in Central Arkansas with 4 hour and 12 hour courses that require advanced navigation and offer team and solo divisions.
Indoor triathlon at Oak Brook Family Recreation Center featuring rowing, cycling, and a 1.25 mile run or walk for ages 12 and up.
An indoor triathlon at the RecPlex combining timed pool swim, spin bike, and treadmill run with equal scoring across the three disciplines.
Monthly updates for United States
Get new running races (and updates) in your inbox every month.
A Cincinnati hill-climb event featuring run/walk/ruck, bike, and duathlon options with in-person and virtual entries and online registration.
A three day, 320 mile multi-sport championship on Hawaii's Big Island featuring a 6.2 mile swim, 261.4 mile bike and 52.4 mile run for 40 athletes.
Black Friday lap event in Emmaus, PA offering runs and rides from 10K to 100 miles, team relay and challenge formats, a six-pack prize system, and USATF permit coverage.
A run-swim-paddle challenge in Lanikai on November 28, 2026, with Solo, Relay, and Team divisions; free entry with optional donations for participant items.
December 2026
Experience a unique sports festival at the iconic Daytona International Speedway featuring triathlons, duathlons, and a festive 5K. Race through over one million holiday lights or compete on the legendary oval track.
A winter map-and-compass adventure race in Merrill, WI on December 5, 2026 with 3-hour and 6-hour formats for solo racers and teams.
An indoor triathlon with timed swim, indoor cycling on Stages SC3 bikes, and a track run, run in six heats with emailed results and Race Series entries for top finishers.
An 8 hour off-road adventure race around St Louis combining paddling, mountain biking and navigation by map and compass with solo and team entry options.
IRONMAN 70.3 La Quinta on Dec 6, 2026 features a Lake Cahuilla swim, a flat desert bike with a Thermal Raceway lap, and a palm-lined run through Coachella Valley.
Experience the Treasure Coast Tri at Jetty Park in Fort Pierce. Choose from triathlon, duathlon, or aquabike distances and enjoy a unique finish line located directly on the jetty.
Indoor triathlon at Bonner Springs Family YMCA on December 6, 2026 with timed swim, spin bike and treadmill segments, adult and youth divisions, and medals for finishers.
A 26th annual sprint multisport event in Anthem, Arizona featuring a heated pool swim, a separated 20 km bike course and an out and back 5 km run plus youth and aquabike options.
A swim and triathlon festival at Lawrence Park Swim Club with pool swims, runs, multisport races and virtual options.
Coast to coast off road 250 to 300 mile self supported bikepacking, packraft and ultrarunning challenge in Florida with GPX navigation, required tracking and an optional shuttle.
IRONMAN 70.3 Florida in Haines City on December 13, 2026 is a Lake Eva Park triathlon featuring a lake swim and rolling bike and run courses with world championship qualification.