I'd hesitate to add "meters" to the blank form as for a long point to point course you might want to use km.
When I get an application that lists this distance in anything but metric units, though, I convert it to meters or km. For a 1000 foot calibration course, I enter "304.8 meters" into that blank.
I'd definitely vote in favor of a STRONG preference for metric units in that space on the certificate.