Instructions:
1. Select a trail from the dropdown — its track appears on the map as an orange dashed line
2. Click on the map to set the Start point
3. Click again to set the End point — the first leg of your route is calculated automatically
4. Keep clicking to extend the route leg by leg; use Undo Last Pin to remove your last click, or Clear Route to start over
5. Click Download GPX to save the route for Strava, Komoot, Suunto, Garmin, or similar