Is there a way to create a custom report that will show traffic to a specific URL of your site?
I believe that this should answer your question, if that URL is a subdirectory over at Google's Support.
Filters allow you to limit and modify the traffic data that is included in a view. For example, you can use filters to exclude traffic from particular IP addresses, focus on a specific subdomain or directory, or convert dynamic page URLs into readable text strings.
Exclude/Include only traffic to the subdirectories: use this filter to exclude/include only traffic to a particular subdirectory (such as www.example.com/motorcycles).
Also in the Support Article, they have a video to show you how to setup the variable that you needed also.