Can't really say that it is a tradition. But we're using a road atlas ( yes!!!!! paper not electronic) and trace our routes with a highlighter by the year of travel. On the first page of atlas we create a legend, year/color. Example: this year is yellow
After several years, it's interesting to see how your travels cross or intersect!
Also, have a written diary of events:The good, the bad, and the ugly!
The atlas is a pretty new process, as we really just started traveling a bunch. We've (mostly DW) been doing the diary for many years.