[aposiopetic]

LAX has four runways the longest of which is 12000 ft.

That's impressive. Speaking of room to spare, I noticed when flying out of COS a few years back that they, too, had a couple miles' worth of runway and then some.

[USNBandit]

At KCOS you may need every foot of that runway on a hot summer day. The field elevation there is 6200 MSL.

[cynwoody]

That's impressive. Speaking of room to spare, I noticed when flying out of COS a few years back that they, too, had a couple miles' worth of runway and then some.

The air is thinner at 6000+ elevation.