Today, the 7.0-kilometer track, inaugurated in 1979, is nevertheless the longest circuit in the series.
And 73 percent of the lap around the 5.9-kilometer track is raced at full throttle.
Its floodlit, 5-kilometer track, or 3 miles, around central Singapore glows like a luminous ribbon linking both historic buildings and the modern skyscrapers of the financial district.
The 5.1-kilometer track is among the modern circuits renovated by the German racetrack specialist Hermann Tilke, whose company is based in nearby Aachen and who has worked on many of the new Formula One tracks worldwide.
With a wide variety of corners, from sweeping, high-speed corners to a tight, low-speed final sector, to one of the longest Formula One straights — a kilometer, or more than half a mile, long — the 4.5-kilometer track requires excellent aerodynamic downforce and efficiency, engine power, and both good tire grip and mechanical grip.
The 20-corner, 3.4-mile, or 5.5-kilometer, track at Austin received excellent marks ahead of the first race this weekend, including a first corner on a steep hill that Bradshaw compares to the great "corkscrew" at the Laguna Seca circuit in California.
The estate, which in the early 1900s was run by the viscount as a highly productive model farm, is behind electronic gates at the end of 2 miles, or 3.2 kilometers, track.
Within a few laps, he is circling the half-kilometer track in fewer than than 20 seconds, for an average speed of nearly 100 kilometers an hour.
During this cruise, we collected about 5,500 kilometers of track data and 5,300 kilometers of seismic reflection data.
The U.S. Air Force will be tracking UARS by radar on its way in, but even 2 hours before reentry, there will still be so much error in its prediction that the 800-kilometer-long debris-strewn field could be anywhere along a 10,000-kilometer-long track.
BEIJING — With nearly 100,000 kilometers of track, China's railway system is the second-largest in the world, according to Sheng Guangzu, the last minister of railways.
