Book St. Mary's County car rentals from $66

With an abundance of highways and tempting open roads, many travelers opt to turn their St. Mary's County vacations into self-drive tours. If you're embarking on a road trip to remember, it pays to know which cities to add to your itinerary. Try to tick off as many of this place's most well-known destinations as you can:

• California (population of 11,900)
• Golden Beach (population of 3,800)
• Mechanicsville (population of 1,500)
• Charlotte Hall (population of 1,400)

Below you'll find our top recommendations if you want to score the cheapest possible rental car:

• Investigate as many different bargain deals as you can (we make that job completely painless!);
• Make sure you check your inbox for our awesome Price Drop Alert. We'll give you the intel on all the best deals cruising around your next vacation destination;
• Before you pick up your keys and jump behind the wheel, check both airport and non-airport pickup and drop-off locations to make sure you're getting the best deal in town;
• If your pickup and drop-off dates are not set in stone, see if you can get a better price by modifying the days in your search;
• No one likes getting a late fee. Avoid the trouble of having to pay for another full day by ensuring your pickup and drop-off times are similar;
• Sometimes car rental companies offer discounts if you pay right away, so keep a lookout for these kinds of deals;
• The early bird catches the biggest worm, and also the best deals! Book as soon as possible to score some excellent savings.