Fuelstate: Marathon Fueling

Turn the gels, drink mix, electrolytes, and caffeine you already use into a personalized fuel plan for race day. Fuelstate shows what to bring, when to fuel, and how to follow the plan live during your run.

Built for marathon, half marathon, ultra, trail, and long-run training, Fuelstate helps runners plan carbs, sodium, fluid guidance, caffeine, gel timing, and race-week carb loading without guessing.

WHAT FUELSTATE HELPS YOU DO
- Build a marathon fueling plan around the products you already own
- Know exactly how many gels, drinks, chews, and electrolyte servings to bring
- Follow scheduled fuel and salt actions while drinking to thirst
- Follow live countdowns on iPhone, supported Lock Screen and Dynamic Island surfaces, and supported Apple Watch direct mode
- Get audio cues in eligible live runs when your audio settings and route allow
- Adjust plans for pace, distance, heat, humidity, terrain, fatigue, and gut sensitivity
- Review what worked after each run so your next race plan gets sharper

PERSONALIZED RACE NUTRITION
- Calculates personalized carbohydrate and sodium targets, with fluid guidance for drinking to thirst
- Adapts to weather, terrain, intensity, sweat rate, and gut sensitivity
- Supports gels, chews, drink mixes, electrolytes, salt capsules, and caffeine
- Helps you practice fueling before race day instead of improvising on the course

LIVE RUN MODE
- Real-time fuel countdowns for each intake
- Apple Watch direct-mode prompts and Done/Skip actions, coordinated by the required iPhone
- Review eligible workouts from Apple Health when connected
- Phone GPS mode can record route, pace, and elevation data when Location access is available
- Fuel Timer delivers time-based fuel guidance without starting phone GPS

RUN ATLAS
- Build a private, device-local activity heatmap from Apple Health and supported TCX, GPX, or ZIP imports
- Explore route history and eligible race courses with elevation and fuel timing context

RACE DAY MODE (PRO)
- Full race protocol with pre-race preparation and during-run fuel timing
- Live Activity countdowns for scheduled fuel and salt actions
- Built for marathons, ultras, and trail races

CARB LOADING PLANNER (PRO)
- 3-day carb loading protocol tailored to body weight and race distance
- Day-by-day carbohydrate targets and race-week preparation guidance
- Race-week nutrition planning in one place

PRODUCT CATALOG + PANTRY
- Curated database of endurance fuel brands
- Nutrition data for gels, drink mixes, chews, electrolytes, and salt caps
- Build your personal pantry and race-day loadout
- Track which products work well for your gut

Fuelstate Pro includes live run execution, Lock Screen prompts, audio cues, Apple Watch prompts, exact fuel timing, what-to-bring lists, race prep, post-run review, Race Day Mode, Carb Loading Planner, Menstrual Cycle Sync, and Gut Intelligence.

Fuelstate is free to download. A Fuelstate Pro subscription is required to use the app: Fuelstate Pro Annual is $29.99/year and Fuelstate Pro Weekly is $2.99/week. Subscriptions renew unless auto-renew is turned off at least 24 hours before the end of the current period. Manage or cancel subscriptions anytime in your Apple ID account settings.

Fuelstate is a running-fueling planning and execution tool. It is not medical advice, medical care, or a meal-planning service, and it does not diagnose, treat, prevent, or cure any condition. Consult a healthcare provider for medical guidance.

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