What's the most efficient route to...

Meaning

Seeking the quickest or best way to get somewhere.

Examples

• John: Excuse me, <b>what's the most efficient route to</b> the airport?
• Alice: The fastest way is to take the highway; it avoids traffic.
• John: Great, thanks! And later, <b>what's the most efficient route to</b> the city center from the airport?
• Alice: You can take the airport express train; it's usually quicker than a taxi.