GPS track file (.gpx)

1) Quality

Make sure you have good .gpx data. Enough data points to show a round and smooth line (not angled straights). No parts with signal drift or skipping. No parts where you took the wrong way recording it. Elevation data must be included to automatically generate the height profile.

2) Redundancy

Before you upload a trail, check if it’s already on the map. If it overlaps an existing trail for a short section (10%) it’s ok. Cut the trail if it overlaps more.