Will Pittenger / Wikimedia Commons
The Endurance Circuit. Also visible is the drag strip and oval.
The most well-known layout is the main Grand Prix Circuit, which is the one we'll be watching racing on this weekend.
But the track was designed with a plethora of alternative routes to allow for multiple layouts.
These include a narrow, flat oval which includes part of the pit straight, and a drag strip which runs just behind the F1 paddock.
There is also a high-speed outer circuit which avoids the twisty infield, and a tighter circuit comprised of said infield, which avoids most of the high-speed sections of track.
Fans may also remember the corner-heavy version of the full circuit, which was used for the 2010 Bahrain Grand Prix. It adds eight totally pointless corners between Turns 4 and 5, and wasn't especially popular.
Happily, this "Endurance Circuit" is unlikely to ever be used for F1 again.