Ready to take on the challenge of a Half-Ironman?
This middle-distance triathlon, also known as IRONMAN 70.3, is a grueling yet rewarding test of endurance that includes a 1.9 km swim, a 90 km bike ride, and a 21.1 km run (half marathon).
Athletes from around the world train year-round to compete in these events, which are held in stunning locations globally.
Whether you're an experienced triathlete or aiming to complete your first IRONMAN 70.3, here's your comprehensive guide to the 2025 Half Ironman race calendar.
Global Events
IRONMAN 70.3 races are held in some of the most beautiful and challenging locations across the globe.
Each race offers a unique experience, from the breathtaking landscapes to the community support and the chance to qualify for the World Championship.
Middle Distance Triathlon Championships
The Middle Distance Triathlon Championships bring together the best of the best in the triathlon community.
These championship events are a highlight of the racing season, featuring fierce competition and incredible athletic performances.
Check out these schedules and choose the perfect race date for you.
Ironman 70.3 International Events 2025
Here is a comprehensive list of Ironman 70.3 North American and global events for 2025:
Athletic Brewing IRONMAN 70.3 Oceanside
Date: April 5, 2025
Location: Oceanside, California, USA
IRONMAN 70.3 Hawaii
Date: May 31, 2025
Location: Waikoloa Village, Hawaii, USA
IRONMAN 70.3 Victoria
Date: May 25, 2025
Location: Victoria, British Columbia, Canada
IRONMAN 70.3 Mont-Tremblant
Date: June 22, 2025
Location: Mont-Tremblant, Quebec, Canada
IRONMAN 70.3 Coeur d’Alene
Date: June 22, 2025
Location: Coeur d’Alene, Idaho, USA
This race also includes Olympic distance, as part of the festival weekend, offering a range of options for athletes.
IRONMAN 70.3 Rockford-Illinois
Date: June 22, 2025
Location: Rockford, Illinois, USA
IRONMAN 70.3 Pennsylvania Happy Valley
Date: June 15, 2025
Location: State College, Pennsylvania, USA
IRONMAN 70.3 Muncie
Date: June 29, 2025
Location: Muncie, Indiana, USA
IRONMAN 70.3 Musselman
Date: July 13, 2025
Location: Geneva, New York, USA
IRONMAN 70.3 Ohio
Date: July 27, 2025
Location: Delaware, Ohio, USA
IRONMAN 70.3 Maine
Date: August 3, 2025
Location: Old Orchard Beach, Maine, USA
IRONMAN 70.3 Santa Cruz
Date: September 28, 2025
Location: San Cruz, California, USA
IRONMAN 70.3 Waco
Date: October 19, 2025
Location: Waco, Texas, USA
IRONMAN 70.3 Dubai
Date: November 1, 2025
Location: Dubai, United Arab Emirates
IRONMAN 70.3 Taupo
Date: December 13, 2025
Location: Taupo, New Zealand
Get Ready to Race!
Preparing for a half Ironman involves several important steps to ensure you're ready for the race.
Let's unwrap each stage along with some tips for triathletes.
Establish a Training Plan
This plan typically lasts between 16 to 20 weeks and involves training sessions 6 to 10 times a week.
Your training should include a mix of swimming, cycling, and running workouts.
It's important to vary the intensity of these workouts, incorporating easy, moderate, and intense sessions to build your endurance and strength gradually.
Feel free to explore our
Ironman training plans for beginners and elite athletes.
Build a Solid Fitness Base
For swimming, focus on improving your technique and endurance by swimming 2 to 3 times a week.
When it comes to cycling, gradually increase your mileage and include long rides and interval training to build your stamina.
For running, work on your endurance with long runs and sprint workouts.
Incorporate Brick Workouts
Brick workouts involve training two disciplines back-to-back, typically biking followed by running.
This helps your body get used to the transition between sports, which is a key aspect of triathlon racing.
Aim to include brick sessions at least once a week.
Add Strength Training to Your Routine
Include 2 to 3
strength training sessions each week, focusing on building your core and leg strength.
This will support your overall endurance and help prevent injuries.
Focus on Nutrition and Hydration
Maintain a
balanced diet rich in carbohydrates, proteins, and healthy fats to fuel your workouts and recovery.
Practice your race-day nutrition during long training sessions to find out what works best for you.
Staying hydrated is equally important, especially during long workouts.
Practice Transitions
For the swim-to-bike transition (T1), practice removing your wetsuit and quickly transitioning to the bike.
For the bike-to-run transition (T2), practice changing from biking to running gear efficiently.
Smooth
transitions can save you valuable time on race day.
Don't Neglect Mental Preparation
Visualize the race and how you will handle each segment.
You can also practice mindfulness and do meditations to stay focused and calm, as well as build mental resilience.
Rest and Recover Properly
Make sure you allow your body to recover by taking at least one day off per week.
Ensure you get adequate sleep, as it supports recovery and performance.
Check Your Gear
An equipment check is essential before race day.
Make sure your wetsuit fits well and is comfortable for the swim.
Regularly service your bike to ensure it is race-ready.
Train in the running shoes you plan to wear on race day to ensure they are comfortable and well-fitted.
Taper
Reduce your training volume 2 to 3 weeks before the race to allow your body to recover and peak on race day.
Keep the intensity of your workouts high but reduce their duration.
Have a Clear Race Day Strategy
Plan your pacing for each segment of the race, stick to your practiced nutrition and hydration plan, and stay calm, especially during the swim start, which can be chaotic.
See our
race day checklist for more information on race day essentials.
Wrapping up
With a packed calendar of Half Ironman events in 2025, there's no better time to start training and planning your race season.
Whether you're aiming for a personal best, looking to qualify for the IRONMAN 70.3 World Championship, or just seeking the thrill of competing in a stunning location, there's an event for you.
Check the official IRONMAN website for registration details and more information on each race.
See you at the starting line!
