"leading out" can be used in written English.
You might use it to describe the start of a process or activity. For example: "We will be leading out the project in the coming weeks."
Another bedroom, has French doors leading out to a porch.
I ducked through a doorway leading out into the air.
A landslide and floods shut down traffic on one of major highways leading out of Manila.
Those who live close to the freeways leading out of the ports suffer the most.
Radio cars and squad cars loaded with detectives patrolled every main highway leading out of Brooklyn.
Tentatively, she found her footing on the stairs leading out of the lake and onto shore.
How many gallons of oil have already leaked into the canals leading out to the gulf?
"There's only one street leading out of the station, so take that.
Which roads leading out of the affected area are now impassable to motorists?
"To be leading out the world champion next year would be really special.
But the roads leading out would flood quickly, stranding those who lingered.
