As soon as you say "between", I begin listening for two locations.
I'm grateful for the one you've already described, and eagerly await
the mention of the second one.
Billings is 1,543 miles north of the Tropic of Cancer.
roughly 3239 miles
about 47 degrees
the tropic of Cancer
Directly between the Tropic of Cancer and the Tropic of Capricorn is the equator.
There are only two "tropics", the Tropic of Cancer and the Tropic of Capricorn. so there's no "tropic in between" them.
The Tropics
In order for a Tropical Rain Forest to be considered a Tropical Rain Forest it must be located between the Tropic of Capricorn and the Tropic of Cancer.
the tropic zone
the equator
They are parallel lines running east-west around the earth, about 3,240 miles apart.The equator is exactly midway between them.
The Tropic of Cancer is north of the equator, near the parallel of latitude 23.5° N.The Tropic of Capricorn is south of the equator, near the parallel 23.5°S.