I was at the DC Prosolo this weekend, and they use a drag launch start, with about a 100 foot drag before the first turn of the course. They measure RT and 60' times accurately.
Seems like my car was one of the fastest, if not
the fastest 60 foot times of the weekend.
2011 WRX Sedan base
Koni Shocks
Invidia Catback
Perrin drop in filter
Dunlop Star Spec tires
Otherwise stock, no power mods.
The surface was unprepared asphalt, with a sealer on top that made things slick. The launch and entire 60' was up hill. Not sure about elevation, I was at FedEx Field in Landover, MD.
I managed a 1.721 and a 1.755, and was consistently running 1.8's and at worst, 1.9's.