RE: assisting someone research for used purchase

Assume many 25% of flights are to third world, Mexico, with heavy storms in summer and single runway airports. Aka need to divert if one-runway closes.

With that said, what is a real-world no-wind range (tanks full at takeoff), for Lear-60 and Citation Bravo ? I am not looking for extreme until flameout nor looking for land with 2 more hours reserve.

A realistic, real-world, safe, IFR-legal no-wind range estimate on full fuel.

Thank You