If you haven't heard of it and like the idea of collaborative mapping, check out https://facilmap.org I love it, you can customize a lot, like all the marker types, do cycle routing on it, search for things, etc... Then share a read only version. I've used it for organising bike trips, or just any trip where I need to share a bunch of location points, and do it collaboratively. (It came out of the ecotopia bike tour project iiuc)