https://www.greyhound.com/roadrewards/benefits.aspx
The top award? After 16 one-way "destination point" trips within a one-year period you earn "One FREE ticket to anywhere Greyhound goes."
It reminds me of that old joke about a contest's first prize being
one week in [insert your least favorite city here] and the second prize being
two weeks.
No upgrades to F, no lounge access, no elite line for the snack counter, but you have to give Greyhound's marketing department credit for setting up a program that will benefit those unenviable souls who take 16 bus rides within 12 months.