Hi Pete,
When we measured it, we did so with the sole intention of using it as a road mile for state records. At the time, we could find nothing telling us that the track could not also be counted as a road course.
(hence my concern about parking lots, since they don't appear to fit within the reg.6 definition of a road course)
At Matthew Studholme's advice, I just dug up a copy of our measurement certificate. Low and behold, we specified the "type of course" as a "track", not a "road race".
I think we marked the form as "track" thinking that we were describing the venue, not the type of certification we were seeking. Well at least now I understand how we thought we had a road mile when in fact we had a track mile.
If parking lots are indeed OK, then I still would like the definition of a course to be broadened to include that.
For what it's worth, I'd prefer to see the road vs track distinction be dropped. A distance is a distance, as long as the other parameters (elevation, proximity of start/finish, etc) are legal. Otherwise, why exclude a track when a parking lot can be defined as a road?
Thanks,
David