You can use Distil’s custom pages to gain visibility into the number of visitors each page is receiving by leveraging Google Analytics (GA) Event Tracking. More information is available on GA Event Tracking at:
There are many resources on the web on deploying this sort of event tracking, though most of them are written with the idea of tracking 404 pages. In order to track Distil Block pages (HTTP 416) and Distil integrated third-party CAPTCHA pages (HTTP 405), just modify the tracking code accordingly.
Below are a few additional references that may be helpful when configuring your Google Analytics account: