12 Week Beginner Half Distance Plan: Not Your Average Training

Many beginner plans are boring and rely on generic miles that leave you tired and slow. This 12 week program is different. Built for the athlete stepping up to the 70.3 distance, we focus on sessions with a clear objective. You will follow a science based schedule designed to make you stronger. Every workout has a purpose, ensuring you arrive at the start line ready to race rather than just trying to survive the day.

How You Will Succeed

• Finish with Confidence: Follow a safe, steady build for the 1.9km swim, 90km bike, and 21.1km run.


• Personalized Pacing: You will stop guessing how fast you should go. Every session uses your personal pace targets to ensure effective training for your current fitness.


• Energy Control: Learn to manage your effort on the bike so you still have strong legs for the half marathon finish.

The Science of Your Progress

• Aerobic Efficiency: Improve how your body burns fuel to avoid hitting the wall. This is the key to a strong finish.


• Race Speed Practice: Train at the exact speeds you need to hold on race day so they feel natural and controlled.


• Better Technique: Simple focus points help you swim faster and run with less effort. All swim sessions are written by a professional swim coach to ensure you move through the water efficiently.


• Mental Readiness: Your plan includes long rehearsal sessions so you know exactly what your body can do before you reach the start line.

Your 12 Week Roadmap

• Weeks 1 to 4: The Base. Build a consistent routine and the foundational fitness you need for the work ahead.


• Weeks 5 to 8: The Build. Introduce sessions that teach your body to maintain its speed even as you begin to feel tired.


• Weeks 9 to 12: Peak and Taper. Reduce total training volume while keeping quality high. This allows your body to recover so you feel powerful on race morning.

This Plan Is Built For You If:

• First Time Half Distance: You want a professional schedule to guide you through your first 70.3 experience.


• Mid Pack Swimmer: You expect to exit the water in the middle third of the pack and want a plan written by a pro swim coach.


• Goal Oriented Beginner: You prefer structure over a random schedule.

Requirements and Inclusions

To get the best results, you should be able to swim 100m in roughly 1:50 to 2:30, cycle for 60 minutes, and run for 40 minutes.

• 12 weeks of structured training syncing directly to TrainingPeaks.


• 5 to 8 sessions per week: 2 swims, 3 bikes, 2 runs, and 1 strength session.


• 2 strategic rest days to allow your body to rebuild and get stronger.

Check out our other Half Distance Training Plans Here

Take the Next Step

Don't leave your first race to chance or waste time with a boring plan. Follow a system grounded in science and built for your needs. Trust the process and cross that finish line with a smile.