Various groups crossing the Mormon trail left from different places. Most left from Missouri or Illinois.
It depends on the group or time period. The first Mormon pioneers left from Nauvoo, Illinois, but later groups left from Missouri or Iowa.
The Mormon trail was first used in 1846-47 and stopped being used around 1870, when the transcontinental railroad came through.
Missouri
Utah.
Montana
The Mormon Trail began in 1847.
Nebraska
The Mormon Trail started in February 1846.
Mormon Trail was created on 1978-11-10.
The Mormon Trail.
The Mormon trail and the organ trail