Greyhound's website will tell you the location of every stop they have. Just google "CITY" greyhound terminal
Charlottesville, Virginia
Address
CHARLOTTESVIL GREYHND STA
310 W MAIN ST
Charlottesville, VA 22901
Telephone Numbers
Main: 434-295-5131
Greyhound Package Express: 434-295-5131
Greyhound Charter: 800-454-2487
Assuming you're referring to Charlottesville, Virginia, there's a Greyhound bus terminal at 310 West Main St. (see related link "Charlottesville terminal info"), and there is a bus stop listed in Graham, North Carolina, about seven or eight miles from Elon.
GREYHOUND BUS TERMINAL 2015 WELLINGTON AVE Winnipeg, MB R3H1H5
The closest Greyhound terminal to Manassas, Virginia is in Woodbridge.
There isn't a Greyhound station in Marianna FL. That does not mean Greyhound doesn't stop there. But, there is no actual Greyhound terminal/facility in Marianna. The closest Greyhound station is in Tallahassee.
There is none. Closest is in Dayton on Shiloh
The easiest way to find a Greyhound bus terminal in your location would be to go straight to the Greyhound website. There they give you the opportunity to purchase a ticket before going to the terminal, and they have a locator so you can enter your zip code and they will locate the bus terminals around you.
RALEIGH GREYHOUND STATION 314 W JONES ST Raleigh, NC 27603
538 Fellowship RdMount Laurel, NJ
There is a Greyhound terminal in Savannah, GA at 610 West Oglethorpe Ave.
Greyhound bus lines operates many routes out of Cleveland, Ohio. The Greyhound bus terminal can be located at 1465 Chester Avenue in Cleveland, Ohio.
one km
You can catch a Greyhound bus to Philadelphia from the nearest bus terminal. The problem with answering the rest of the question (regarding times, fares, etc.) can't be determined since you do not provide a departure location.