Roland Garros Airport lies in the tropics at 20.89° S, 55.52° E, on Indian/Reunion time (UTC+4). Tropical airports contend with heat and humidity, both of which thin the air and lengthen takeoff runs, and with convective storms that build fast in the afternoon.
Roland Garros Airport has 2 runways. The longest, 12/30, measures 10,499 ft by 148 ft, which puts the field in the long-haul capable category: widebodies operate comfortably, though the very longest sectors may need a payload trade. The surface is asphalt. Both are lit for night operations.
Runway 12/30 is aligned roughly east/west, which is the clearest hint you get about the prevailing wind here: runways are built to face the wind that blows most often, because aircraft take off and land into it. With 2 runways across 2 different headings, crews can pick whichever best suits the wind.
The runways are not interchangeable. 14/32 is 8,760 ft against 12/30's 10,499 ft, a difference of 1,739 ft, so the shorter one generally takes regional traffic while the longer handles anything heavy.