I haven't tried MapLibre. I'm learning that there are lots of alternatives to Google Maps and Mapbox which I love to see. I learned of Leaflet through GPS Visu

I haven't tried MapLibre. I'm learning that there are lots of alternatives to Google Maps and Mapbox which I love to see. I learned of Leaflet through GPS Visualizer[1]. It's an excellent resource. They also have a tool that will augment your GPX file with elevation data[2], though I'm not sure what source they use. According to their site: > Complete copies of the SRTM3 and USGS NED databases, as well as a large number of SRTM1 and ASTER tiles, are stored on GPS Visualizer's server` One thing I learned through this project is that elevation and distance data are all over the place depending on what source you're pulling from. [1]: https://gpsvisualizer.com/ https://gpsvisualizer.com/ [2]: https://www.gpsvisualizer.com/elevation https://www.gpsvisualizer.com/elevation