The small print.

Privacy

This covers trailhustle.com and the tools on it, including the Fuel Planner. We collect as little as we can.

What you enter into the Fuel Planner

The planner works with the following information as you go through its steps:

• Athlete profile: bodyweight, experience level, carb and fluid targets, preferences
• Prior race and training efforts: distance, time, elevation, notes
• Route data: GPX file contents used to work out terrain and elevation
• Fuel inventory: product names, nutritional values, quantities
• Aid station details: locations and available supplies
• Planner outputs: the generated fuelling schedule and carry plan

How planner data is stored

Your planner inputs and outputs are saved to your browser's local storage. The data stays on your device, in your browser, and the planner does not send it to or save it on any server or database.

Clearing your browser storage removes your saved plans. There is no cloud save or account sync.

GPX files

When you add a GPX file, it is read in your browser to work out elevation and terrain. The file is not uploaded to, or stored on, any server.

No accounts, no database

The site and its tools do not need an account. We do not collect your name, email address or any identifying information, and there is no user database behind them.

Analytics and cookies

If you accept the cookie banner, we use Google Analytics 4 to see what lands: which pages are visited, how far people scroll, which links are followed and how the Fuel Planner is used. IP anonymisation is switched on, and no personally identifiable information or planner inputs are included in these events. Google Analytics may set cookies in your browser.

If you decline, or ignore the banner, Google Analytics never loads. Your choice is remembered in your browser's local storage; clear this site's data to be asked again. You can also block analytics with the Google Analytics opt-out browser add-on.

We do not use advertising networks or sell any data to third parties.

Other services these pages load

Pages load the Inter typeface from Google Fonts. The Fuel Planner's map and race card load map tiles from OpenStreetMap. Like any website, these services receive your IP address when your browser requests them, under their own privacy policies.

Links to Substack, Instagram, Luma and WhatsApp take you to those services, which have their own privacy policies.

Hosting

The site is hosted on Vercel and managed via GitHub. Normal server logging may happen at the infrastructure level, for example IP addresses or request logs that hosting providers routinely capture. These are governed by those providers' privacy policies.

Contact

For privacy questions: ben@trailhustle.com

Terms of use

These terms apply to the Fuel Planner.

What this service is

The Fuel Planner is a free online tool that helps trail and ultra runners plan fuelling for their races and long runs. It generates estimates based on the inputs you provide, including past race data, GPX route files, fuel products and aid station locations.

It is an informational planning tool only. It is not a personalised coaching service, a nutrition programme or a medical product.

No professional advice

Nothing in the Fuel Planner constitutes medical, nutritional, dietary, coaching or other professional advice. The plans and recommendations it produces are general estimates based on widely used training principles and the data you enter.

Use your own judgement when reviewing any output. If you have specific health conditions, dietary requirements or concerns about race nutrition, consult a qualified professional before acting on any guidance from this tool.

Use at your own risk

Fuelling plans produced by this tool are estimates. They are based on your inputs, assumed pace models and route data. Actual race conditions, your tolerance on the day, weather, fatigue and many other factors will influence what works for you.

You are responsible for testing any fuelling strategy in training before relying on it in a race, and for the decisions you make on race day.

No guarantees

The Fuel Planner is provided as-is. We make no guarantees about the accuracy, completeness or reliability of any plan it produces. We do not guarantee that the tool is fit for any particular purpose, that it will be available without interruption, or that it is free from errors.

Limitation of liability

To the fullest extent permitted by law, the providers of the Fuel Planner are not liable for any injury, illness, loss, damage or other outcome arising from your use of this tool or any plan it generates. This includes outcomes during training or racing.

Changes and availability

The Fuel Planner may be updated, changed, suspended or discontinued at any time without notice. These terms may also be updated. Continued use of the tool after any changes constitutes acceptance of the updated terms.

Contact

For questions about these terms: ben@trailhustle.com

Fuel Planner disclaimer

The Fuel Planner is a planning tool. The following points apply to any plan or guidance it produces.

• Plans are estimates, not prescriptions

  All fuelling plans are based on your inputs, assumed models and route data. They are starting points for planning, not exact instructions to follow without thought.

• Test strategies in training first

  Never rely on a fuelling approach in a race without testing it during training. Your gut, pace and preferences on race day may differ from what you expect.

• Individual tolerance varies

  Carbohydrate tolerance, fluid needs and electrolyte requirements vary significantly between athletes. What works for one runner may not work for another, even in identical conditions.

• Conditions change needs

  Weather, terrain, pace, fatigue and race-day stress can all shift your fuelling requirements away from any pre-planned values. Stay flexible and respond to how you actually feel.

• Not a substitute for professional advice

  This tool does not replace advice from a qualified sports nutritionist, dietitian or coach. If you have specific health conditions, dietary needs or performance goals, seek professional guidance.

• Listen to your body

  If a fuelling strategy is not working for you, causing nausea, GI distress or discomfort, stop or adjust, regardless of what any plan says. No plan is worth pushing through something that is clearly not working.