Visual Flight Rules

Airspace	Visibility	Distance from cloud
C	5 km	1,500 m horizontally / 1,000' vertically
F and G	5 km	1,500 m horizontally / 1,000' vertically
	5 km	(at or below 3,000') clear of cloud and in sight of surface
	(at or below 3,000' at 140 kt or less with visibility 1,500 m) clear of cloud

References