AVUS Ring - While normal for a road, it is unusually shaped for a race track as it is essentially two long straights in the form of a dual carriageway, with a hairpin corner at each end. The north curve featured a steep banking from 1937 to 1967. While the original layout was 19 km (12 mi) long, the southern turn was moved several times, to shorten the track to 8.3 km (5.2 mi), then 8.1 km (5.0 mi) without the banking, 4.8 km (3.0 mi) and finally 2.6 km (1.6 mi).