Given that AUK insurers have some qualms about this (see Blacksheep's comments), that suggests that they wouldn't recommend hosting a public website with this stuff on without insurance cover. I can understand, given the vast exposure the web creates, why an uninsured individual would choose caution over valour on this.
The route-finders (AA/Google etc) are a bit different, as they are clearly automated, picking sections of the public highway based entirely on your selection criteria;
an Audax organiser has created a complete route, deliberately choosing certain roads.
Maybe this makes no significant difference in court, but I can see a material difference.