What is the longest commercial airport runway in the world?

>>Edwards air force

Edwards is not a commercial airport.

16R/34L at Denver International is 16,000 ft. long.

17/35 at Upington Airport in South Africa is 16,076 ft. long

02/10 at Ulyanovsk Vostochny in Russia is 16,405 ft. long

14/32 at Qamdo Bangda Airport in Tibet is 18,045 ft. long

Qamdo iss this long because it's also the highest airport in the world at 14,219 ft, and the thin air at elevation requires a greater speed to maintain enough lift. the higher landing speeds mean longer runway needs.