For myself I would create them on basecamp as waypoints/poi/location and export them all as a single gpx file to your garmin.
Alternatively create a placemark in google earth export as kml, convert using gpsvizualizer as gpx.
Many thanks i’ll give these a try.
As a workaround I have created a 200 metre route which goes past each poi, I can then load the course and navigate to start. But the above will be much more scaleable and I think there is a limit to the number of routes I can link to Strava from my Garmin.
There is a method to do this on your garmin but you need to know the lat and long coordinates. Create a location at your current position, save and then edit. This gives you this screen to manually enter the coordinates.
For myself I would create them on basecamp as waypoints/poi/location and export them all as a single gpx file to your garmin.
Alternatively create a placemark in google earth export as kml, convert using gpsvizualizer as gpx.
Or create them here, http://gpx-poi.com/