How should I take duration into account for trade routes?

The title says it. When creating a trade route, there's a "duration" (I think) next to a clock to the right of the name of the city. How does this affect game play?

I looked at (Civ6) but did not really understand it.

1 Answer

Duration affects how long until you can change your trade route. This can matter when political alliances shift.

As the trade value is expressed on a per turn basis, trade route duration has no further impact that I am aware of.

Update Eric makes a valid point about trading posts being created only when a route completes.

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