Hydro Trail

Plan smarter hikes with science backed estimates for water, food, clothing, and sun protection all from your GPX route and local weather.

HydroTrail takes the guesswork out of packing for a hike.

Upload your GPX route and let HydroTrail calculate exactly how much water to carry, what to eat, how to dress, and how to protect yourself from the sun — all tailored to your body, your gear, and the actual weather on your route.

HydroTrail uses established physiology models (Pandolf, Santee, and Shapiro) to compute your metabolic load and sweat rate based on your weight, pack weight, terrain, gradient, and pace. Solar geometry calculations factor in time of day, latitude, and cloud cover to estimate UV exposure along your route. The result is a personalized plan, not a generic "drink 2 liters" suggestion.

What HydroTrail calculates: • Water requirements — by segment, adjusted for temperature and exertion • Food and calorie needs — matched to your energy expenditure • Clothing recommendations — based on temperature, wind, and precipitation • Sun and UV exposure — hour-by-hour along your route

Plan with your real route. Import GPX files from any mapping app or GPS device. HydroTrail reads elevation, distance, and waypoints to compute realistic effort estimates for every segment of your hike.

Weather-aware planning. HydroTrail factors in the forecast for your hike date and location, so your plan accounts for heat, humidity, cold, and sun — not just generic averages.

Food planner. Browse a built-in food library or add your own items. The food planner lets you build a full snack and meal plan matched to your calorie target for the day.

Pack list. Generate a checklist from your plan and mark items off as you pack. Save lists across hikes.

Save and revisit your hikes. Create an account to save hikes, settings, and gear profiles. Access your plans across devices.

Privacy first. Your data is yours. HydroTrail uses secure, owner-only cloud storage. You can delete your account and all associated data at any time from within the app.

Whether you're a day hiker or planning a multi-day trek, HydroTrail gives you a detailed, science-based plan so you can focus on the trail.