There is nothing that can really be compared to Martinsville Speedway in the context of the NASCAR Sprint Cup. The closest resemblance to any track it has on the circuit is Bristol Motor Speedway, though even that is not really close.
Both tracks are about a half-mile, but Martinsville's flat surface requires a different approach for the teams and drivers as opposed to the steep inclines of Bristol.
Drivers will need to have eyes in the back of their head and would be wise to have a heavy foot on the brakes. There really isn't any way to coast around the tight corners at Martinsville.
Some drivers really excel, for various reasons, at this track. Defending Goody's Fast Relief 500 winner Kevin Harvick will certainly be competitive as he seeks his first victory of the 2012 season, though he will certainly have plenty of stiff challenges all day from a cadre of other hungry wolves.