Japan, Turkiye, Morocco, India, Ecuador, the Carpathians
Take the six lines end to end, or reserve an overland trip in Washington DC in pieces
Six lines, each a run of two or three segments taken in order. The shortest is ten nights and the longest sixteen. Figures below are for the whole line with two of you sharing, and each is exactly the sum of the segments it contains.
Reserve this with the officeNothing is charged here. The form stays open at any hour and a person writes back inside one working day.

Reading a line
A line is an order, not a package. It names two or three places, the sequence they make sense in, and what the move between them costs you in hours. You can walk the whole order, or take any single segment and ignore the rest, and the office will arrange either without arguing for one. The nights given are the nights you sleep inside the segments; the moves happen between them and are described on each segment page.
Six is a small number on purpose
A catalogue of six lines is short by the standards of this trade, and that is deliberate. Each of these runs is one this office can describe in specifics rather than adjectives, with a named operating company on the ground and a figure that has been checked this season. Adding a seventh would mean writing about somewhere the office knows in outline, and the difference between those two kinds of page is obvious to anyone reading carefully.
Reserve one segment, or a whole line
This form is open at any hour, and whatever reaches it is read by a person who answers inside one working day. Nothing you send commits you, and no figure is charged at this end at any point.