There are 168,000 retail locations in the U.S. that sell fuel to the public.
There are 126,658 convenience stores selling fuel in the United States.
Coke has a market share of about 42%, but some convenience store gas stations sell Coke along with other players in the market like Pepsi, so maybe 60% of gas stations sell Coke.
So I am going to guess that there are about 76,000 gas stations selling Coke in the United States.