AI race fuel · Prompt generator

Build your fuelling prompt

Answer the questions below and copy the finished prompt into Claude, ChatGPT or any AI assistant. Whatever it suggests is a starting point to test in training — never race on something new.

Units

Step 1 · What should the AI do?

Pick one task. The prompt is rebuilt around it.

Step 2 · You and your event

Picking an event fills in a sensible duration — adjust anything.

Expected durationminBodyweightkg

Target carbs

g/h

Most runners handle 45–60 g/h. Above 90 g/h needs practice in training.

Sweat level

Step 3 · Your preferences

CountryNeeded for local availability and prices — the AI can only rank what you can buy.BudgetCommercial vs DIYFuel carrier

Your prompt

Updates live

Find energy gels and carbohydrate drink mixes I can actually buy in my country right now.

I want:
- A shortlist of 5–10 products available to me, with where to buy each one
- The cheapest reliable way to hit my carbohydrate target per hour
- At least one high-carb option and at least one gentle-stomach option
- Caffeine-free options only

My profile:
- Sport / event: Marathon (~240 min expected)
- Bodyweight: 70 kg
- Target carbohydrate intake: 60 g/hour
- Sweat level: medium (sodium target ~650 mg/hour)
- Sensitive stomach: no known issues
- Caffeine: I avoid caffeine — caffeine-free options only
- Country: my country
- Budget: budget-focused — cheapest reliable option matters most
- Preference: open to both commercial products and DIY mixes
- Fuel carrier: bottles (drink mix)

Follow these rules:
- Search current availability and prices in my country.
- Rank products by price per gram of carbohydrate.
- Show carbs, sodium, caffeine, serving size, and cost per 60 g of carbs for each option.
- Separate race-day convenience from training-cost value.
- Include DIY alternatives using maltodextrin, fructose and sodium citrate.
- Do not recommend caffeine powder recipes.
- Treat all plans as starting points to test in training — never anything new on race day.

213 words · paste into Claude, ChatGPT or any assistant

Whatever your AI suggests is a starting point to test in training — never race on something new.

Step 1

Pick a prompt type

Six jobs your AI can do: find gels near you, compare commercial vs DIY, build a marathon or HYROX plan, troubleshoot your stomach, or write your race-day checklist.

Step 2

Answer the questionnaire

Sport, duration, bodyweight, carb target, sweat level, country, budget and preferences — the prompt personalises itself as you type.

Step 3

Copy it into your AI

Paste into Claude, ChatGPT, Gemini or any assistant with web search. Your AI fetches current, country-aware prices — so the answers stay fresh without this site maintaining a price database.

What's baked into every prompt

Every generated prompt instructs your AI to rank by price per gram of carbohydrate, show sodium and caffeine per serving, separate race-day convenience from training-cost value, include DIY alternatives, refuse caffeine powder recipes, and treat every plan as a starting point to test in training. You get the personalisation; the guardrails come standard.

Want the numbers yourself instead? TheRace Fuel Cost Calculatorworks out DIY recipes and training-block savings with no AI involved.