576
The US has so much space
(lemmy.world)
General rules:
Exceptions may be made at the discretion of the mods.
In addition to the other comment about it being a single state within the US, we're also talking about roughly 1500-1600 kilometers in the Texas map. It would mostly be 70-75mph (120kph) highways the whole way.
May I present Kiruna to Trelleborg (1882 km) in Sweden?