A map page similar to the Measurers Map page has been set up showing the locations of all valid(unexpired) USATF certified calibration courses. Note that like the Measurer map the locations are near the center of the town listed in the database, and are not the precise locations of the courses. You can click on the link provided for a course to open its map and figure out exactly where it is.
If you are traveling to measure a course. you might want to take a look at this page to see what cal courses may be available nearby. Of course you should always be prepared to measure your own cal course in case there is an issue with the one that already exists.
The above link is also available on the rrtc.net website in the "Information for Course Measurers" section.