It is not all that expensive to purchase an AOPA Airfield Directory which just about covers all the surrounding airstrips and properties with all the information that you need.
It is available in just about any pilot's shop. All the proprties that have airstrips up there just about guaranteed to have at least a 1000 meter runway with good enough surface to land a Citation.
What are you flying? I can put a Kingair down in less than 700 meters.