It depends on where the bus ride began.
How is the ride
38p
45mintues
To get from San Antonio to Wyoming, you will probably transfer in Dallas and Denver. However, you will not go through Richardson.
4 hours
The closest TRAIN station is in Salt Lake City. You can ride an Amtrak bus to Bozeman, Montana.
According to the Black Hills Stage Line web site, they have a bus stop in Powell, Wyoming. Greyhound has a limited service bus stop in Powell, Wyoming.
three and a half cats
68 hours
seven hours and forty minutes
Strictly speaking, you would ride "in the bus" because to be "on the bus" would mean that you are on the roof. However, people often say that they ride on the bus when they mean that they are sitting or standing inside it.