matt on 21 Mar, 2019 06:13 PM
At the moment, there's no way to have a map load with some folders and items visible, and others not. If you want to send them a link with only one route visible, it would need to be an independent map.
+1 for this feature. We use caltopo to manage our running group (North Bend Beer Runners) weekly routes on 1 map. We create a new folder for each week. We share the map on Facebook each week, but there is no way too share with layer visibility preserved - so users need to manually turn off all the past week layers when they follow the link.