About TrailMark3D
Hi, I'm Carlo. I'm a hiker, cyclist, runner and swimmer, and I love to travel and go on adventures.
I make TrailMark3D. It turns a GPX route, or any place you search for, into a 3D-printable terrain map: the real mountains, your trail, the water and the roads, each as its own part so a multi-color printer prints it in color.
I build the app, write the tutorials and the docs, and print the maps. The prints in the tutorials are real prints of maps made with TrailMark3D.

What TrailMark3D does
- Builds the terrain from elevation data and raises or carves your route into it.
- Adds the sea, lakes, rivers, roads, landcover colors and, in cities, buildings.
- Downloads an STL, or a 3MF with each part on its own filament for Bambu Studio, OrcaSlicer and PrusaSlicer.
- Makes jigsaw puzzles, frames with your text, and multi-day trips.
Learn and get in touch
Start with the tutorials, read the blog, or see the plans. For anything else, write to me at carlo@trailmark3d.com.