Usually like 35-40 minutes. Problem is, they are a growing start-up that hasn't grasped that they have grown too big to still have company-wide stand-ups.
Sheesh. That's like a townhall (except most of this info really is irrelevant to you) every morning then? The worst I've had is around 20 mins and the best is 5 (luckily 5 at the mo)