its the Trans-Austrailan Railway in Australia.
In the USA the longest straight is the 126.9 km (78.9 miles) on the former Seaboard Air Line Railway between Wilmington and Hamlet, North Carolina. ('Air Line' is an American term meaning direct.)
Russia
The large treeless plain between South Australia and Western Australia is known as the Nullarbor Plain. It is a vast, arid region characterized by its flat, featureless landscape and expansive saltbush vegetation. The Nullarbor Plain is also home to the world's longest stretch of straight railway track.
== == At about 10,000 KM or just under 6,000 miles the Trans-Siberian Railway covers over 1/3 of the circumference of the Earth and is the world's longest railroad. The world's longest railway, the Trans-Siberian Railway in Russia, is 5,777 miles (9,297 kilometers) long. It runs from Moscow to Vladivostok. If the auxiliary route to Nakhodka is included, the distance becomes 5,865 miles (9,436 kilometers). The Trans-Siberian Railway was opened in sections. The first train transporting goods reached Irkutsk on August 27, 1898.Refer to: http://www.enotes.com/science-fact-finder/cars-boats-planes-trains/what-worlds-longest-railway
Sudan
The Belmont Stakes is the longest of the three Triple Crown races.
The Summer.
june
Since roadworks come and go periodically there's no real way to tell the answer to this question. Since the M1 is the longest motorway I would imagine at any one time that has the longest uninterrupted stretch somewhere along it.
stretch and do wall angels
I believe they're called stretch limos.