Runtrition

Race Fuel Planner for Runners

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

Plan your race nutrition with science-backed precision. Runtrition simulates glycogen depletion and tells you exactly when and what to eat during marathons, half marathons, ultras, and long training runs — so you never bonk. SMART NUTRITION PLANNING Enter your race distance, target pace, and body weight. Runtrition calculates your carb burn rate and creates a personalized fueling schedule with precise timing for every gel, chew, or drink. GLYCOGEN DEPLETION ENGINE See exactly when your body will run out of fuel. The app models glycogen stores based on your weight and shows a minute-by-minute simulation of energy depletion — and how each fuel stop keeps you going. TRAINING & GUT PREPARATION • Training Mode — practice nutrition during long runs with real-time tracking • Gut Training Plan — progressive program to build stomach tolerance over weeks • Rate gut comfort and get personalized recommendations RACE DAY FEATURES • Live Activity with lock screen fuel countdown and Dynamic Island • Apple Watch companion with haptic fuel and hydration reminders • Pre-race meal planner with carb-loading guidance • Weather-adjusted hydration recommendations MULTI-DAY & ULTRA SUPPORT • Plan nutrition for stage races and multi-day events • Per-stage breakdown with recovery guidance between stages • 5K to 100-mile distance presets plus custom distances INSIGHTS & ANALYSIS • Race history charts showing trends across all logged races • GI issue tracking and analysis • Compare nutrition plans side by side MORE FEATURES • Custom fuel creation with full nutrition profiles • Caffeine tracking with optimal timing • Export plans as PDF to share with your crew • Siri Shortcuts — ask "What's my next gel?" hands-free • iCloud sync across all your devices • Apple Health integration for weight sync FREE & PRO The core planner is completely free. Upgrade to Pro to unlock custom fuels, plan comparison, race logging, and advanced features. Whether you're running your first half marathon or your tenth ultra, Runtrition ensures your nutrition plan is as prepared as your training.

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What's new in Runtrition 1.1: TRAINING & GUT PREPARATION • Training Mode — practice your nutrition strategy during long runs with real-time carb tracking and gut comfort rating • Gut Training Plan — progressive 6-8 week program to build stomach tolerance for higher carb intake on race day RACE DAY FEATURES • Live Activity — see your next fuel stop countdown right on your lock screen and Dynamic Island during the race • Enhanced Apple Watch — stronger haptic fuel reminders with visual "TAKE FUEL NOW" banner, plus hydration tracking and reminders MULTI-DAY & ULTRA SUPPORT • Multi-Day Race Planner — plan nutrition for stage races with per-stage breakdown and recovery guidance • Added 100K and 100-mile race distance presets INSIGHTS & SHORTCUTS • Race Insights — charts showing feeling trends, GI issue analysis, and nutrition learnings across all your logged races • Siri Shortcuts — ask "What's my next gel?" or "Days until race" hands-free • Enhanced Widget — medium widget now shows your first fuel stops with timing QUALITY OF LIFE • Dark/Light/System theme toggle • Apple Health integration for body weight sync • iCloud sync for plans, logs, and custom fuels across devices

Version 1.1

The developer, PragmaTec, 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 Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based 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

    Seller
    • PragmaTec
    Size
    • 12.4 MB
    Category
    • Health & Fitness
    Compatibility
    Requires iOS 26.4 or later.
    • iPhone
      Requires iOS 26.4 or later.
    • iPad
      Requires iPadOS 26.4 or later.
    • Mac
      Requires macOS 26.4 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 26.4 or later.
    • Apple Watch
      Requires watchOS 26.4 or later.
    Languages
    • English
    Age Rating
    9+
    In-App Purchases
    Yes
    Copyright
    • © 2026 PragmaTec
  • Developer Website
  • Privacy Policy

    • 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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