I'm currently running Least Cost Path analysis in ArcGIS Pro. I found that the Least Cost Paths (lines that represent the most cost-efficient way to travel between different locations) are extremely thin and almost invisible without zooming in. Is there a way to make these lines thicker in ArcGIS Pro or other software?
You can change the symbology of the Routes sublayer within your analysis layer. Expand the analysis layer, right-click on the Routes sublayer, choose Symbology
Also, I sometimes Buffer route lines using "Right" for the Side Type parameter. If you display the buffered line with the route line, you get a sense of how how the route is traversed, like this: