Either with XenForo or an external service?
Where users can either upload or embed route maps and users can discuss and rate/like.
For example, using Resource Manager to upload a (eg. GPX file) and the resource manager entry will automatically display a Google Map showing the uploaded route markers. Users can then rate/review and discuss the route. Or embed a Google Map in the Resource Manager entry, for rate/review and discuss.
Interested in how other have implemented such functionality into their community?