Hello,
Neil
.
Wikiloc allows you to group several trails using its
Group & ungroup tool
: but if any of those trails have associated waypoints, you must ungroup them previously in order to group all the trails and their waypoints into a single group (by doing this, the waypoints are no longer assigned to the trails, they just belong to the group).
Another way to relate several trails (each one with or without associated waypoints) is to create a catalog: see
this one, for example
.
-
The catalog contains a link to every related trail.
-
Each related trail contains a link to the catalog to which it belongs.
You can try both options and choose the one you like the most.
Best regards.