There are definitely no gas stations along the "marked" route to BWI. Having dropped off several rental cars at BWI, I've found that there are a couple that are close to the rental depot. If you're taking Route 100E, exit at 10B. Take a right at the 2nd stoplight onto Dorsey Road, you'll see a gas station on the right (there's also a Shell across the street a little further up). Here's the address for your GPS: 1401 Dorsey Road Hanover, MD 21076 Prices are very reasonable. When you're done, exit the station through the exit you DID NOT come in on and turn left (Ridge Road). Go a few blocks and turn right onto the first intersection (New Ridge Road). Go a couple of miles through and industrial park and the rental car depot will be on the left. You're basically coming up the back way to the depot. It sounds a lot more complex than it is. It adds no additional time to your trip, because there's no traffic there.
