Good day. I am new here and would like to map a new trail. How to do it? Thank you in advance for your help
Hi and welcome to OSM and the Forum
There are many approaches to contribute to OSM. I’d suggest to take a look into https://wiki.openstreetmap.org/wiki/Beginners%27_guide and post your questions here.
Happy mapping!
I recently came across an excellent video about trail mapping on OSM, which I recommend generally, but it contains some useful hints about how to map a trail too: https://www.youtube.com/watch?v=LRNl5tr2KEM.