Route Weather & Viability Forecast

Is this trail good to run or hike this week? Upload a GPX and see a 7-day outlook rated for temperature, rain, fresh snow, and wind at the route's high point — with the best window highlighted. Your file is parsed in your browser.

Planning a

Drop a GPX file here, or click to choose

Your file stays on your device.

How the route viability forecast works

Upload a GPX for any trail or route and the tool finds its high point, fetches a 7-day forecast there, and rates each day for running or hiking. The rating blends the things that actually decide whether an outing is sensible: temperature (too hot on an exposed climb, or a hard overnight freeze), rain, fresh snow up high, and wind. The best window for the week is highlighted so you can pick your day.

Good for

  • "Is it snow-free yet?" checks for spring and early-summer alpine routes.
  • Picking the best day this week for a long run or hike.
  • Sanity-checking a route before committing — then diving into the detailed snow forecast if it looks marginal.

Privacy

Your GPX is parsed in your browser. The week outlook sends one point, the route's high point with its height, to TrailSplits' forecast. "Show weather along the route" and "Compare start times" send the route line and its heights (no names, times or other file data) to TrailSplits' API (api.trailsplits.com). Nothing is stored.

Frequently asked questions

Is this route good to run or hike this week?

Upload a GPX and this tool checks a 7-day forecast at the route’s high point, then rates each day for running or hiking based on temperature, rain, fresh snow, and wind — and highlights the best window.

Why does it use the high point of the route?

Conditions up high decide whether a route is sensible — that is where it stays snowy, cold, or windy longest. Judging by the high point avoids a valley forecast hiding a snowed-in col.

How reliable is the forecast?

It is a planning aid, not a guarantee. Forecasts get less certain further out, mountain weather changes fast, and local effects matter. Always check official conditions before committing.

Where does the weather data come from?

From TrailSplits’ own copy of the weather models Open-Meteo publishes (MeteoSwiss, DWD and ECMWF, CC BY 4.0). Your GPX is parsed in your browser. The week outlook sends one point, the route’s high point with its height. “Show weather along the route” and “Compare start times” send the route line and its heights (no names or times from the file) to TrailSplits’ API, read the forecast at the hour you reach each part, and name the model behind each hour. Nothing is stored.