Theron Triathlon Training Plan

Ironman, 70.3 & Sprint Coach

Free · In-App Purchases · Designed for iPad. Not verified for macOS.

The Triathlon app designed to live on your Apple Watch and Garmin. Tired of messy PDFs and complicated spreadsheets? Theron is your AI-powered triathlon coach, building a structured, pro-level training plan that automatically syncs to your watch. Whether it's your first Sprint or your tenth Ironman, Theron adapts to your life, your sleep, and your recovery. Designed specifically for Apple Watch, Garmin, and Apple Health users, Theron is the smartest way for beginner triathletes to build real endurance and reach their full potential without the risk of overtraining or injury. The Power of Scientific, Adaptive Training Theron's proprietary algorithm doesn't just look at yesterday's ride. It analyzes the complete picture, including your health markers, sleep quality, training readiness, and long-term progress toward your race goal. Intelligent Readiness: We use your Apple Health data (HRV, Sleep, Activity) to dynamically adjust today's intensity or duration. If you're fatigued, Theron gives you an easier session. Scientific Foundation: Training protocols are based on peer-reviewed sports science to ensure optimal periodization and peaking for your target race. Dynamic Plan Adjustments: Missed a swim? Your plan immediately restructures your weekly schedule to ensure you stay on track without double-counting or unnecessary stress. Find Your Race, Build Your Plan Search our race catalog by franchise (Ironman, T100, Challenge, Xterra and more), discipline (Sprint, Olympic, 70.3, T100, or Full Distance), and continent, or add any custom race. Theron builds a fully periodized plan, base, build, peak, and taper, that peaks you exactly on race day. Your Training Tracker, Built In Theron Score benchmarks your swim, bike, and run fitness out of 100, and your Readiness chart tracks fitness, fatigue, and form over time so you always know whether to push or rest. Seamless Integration We make training on your Garmin device or Apple Watch effortless. Theron also syncs with Strava, Zwift and Wahoo, so your data stays connected wherever you train. One-Tap Export: Export your entire structured workout (Swim, Bike, Run, or Brick) directly to Apple Watch, Garmin, Wahoo, or Zwift with a single tap. Live Guided Workouts: Follow on-screen instructions and zones directly on your wrist, tracking every metric via Apple Health, Garmin, Coros, or Strava. Perfect for Every Triathlete (Especially Beginners!) Whether you're tackling your first Sprint or aiming for an Ironman, Theron provides the structure you need. Our intuitive interface and clear guidance make it the perfect solution for new triathletes looking to level up. Theron supports all distances: Sprint, Olympic, Half-Marathon, Marathon, 70.3, and Full Ironman. Start your journey with Theron and get your first 30 days of personalized, adaptive coaching absolutely free! Discover the smarter way to train using your Apple Watch, Garmin, Coros, Wahoo, or Strava data. No risk, just results. Terms of Use (EULA): https://theron.app/terms/

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What's New in 1.0.28 • Redesigned Schedule: A new week strip lets you jump between days at a glance, complete with ISO week numbers and smoother day-by-day scrolling. • In-App Strength Workouts: Start any strength session straight from your plan and move exercise-by-exercise with notes, equipment, and a built-in rest timer. • Exercise Explainer Videos: Tap the play icon on strength and swim exercises to watch in-app technique videos. • Share & Print Workouts: Share or print any scheduled session, full structure included, from the menu or a long-press. Perfect for taking your swim sets poolside. Thanks for training with Theron!

Version 1.0.28

The developer, Jele T Dekker, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Health & Fitness
    • Contact Info
    • Identifiers
    • Usage Data

Privacy practices may vary based, for example, on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Provider
  • Theron Triathlon
Size
  • 222 MB
Category
  • Health & Fitness
Compatibility
Requires iOS 17.0 or later.
  • iPhone
    Requires iOS 17.0 or later.
  • iPad
    Requires iPadOS 17.0 or later.
  • Mac
    Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
English and 6 more
  • English, Dutch, French, German, Italian, Portuguese, Spanish
Age Rating
9+
In-App Purchases
Yes
Copyright
  • © 2026, Theron
  • Developer Website
  • Privacy Policy
  • Licence Agreement

    • Supports

    • Family Sharing

      Some in-app purchases and subscriptions may be shareable with your family group when Family Sharing is enabled. Learn More

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