Gas prices are at an all-time record high for Thanksgiving week, according to AAA, after a rollercoaster year of ups and downs at the pump.  Indeed, if there is anything more American than our once-a-year ritual of stuffing ourselves while arguing with relatives, it is complaining about gas prices.

We at DCist did the math to figure out how much more you can expect to pay this year for your turkey travel: the average D.C.-area driver will pay upwards of $0.50 more this year for gas, compared to last year.

Yes, dear reader, that’s a five with two zeros (although, one of them is in front of the decimal point…).

Here’s how we figured it out:

One survey found that most people who are driving for Thanksgiving are going between 20 and 50 miles from home – so, let’s say, an average of 35 miles, or 70 miles roundtrip. The average light-duty vehicle in the U.S. gets 22.9 miles per gallon. So, our average Thanksgiving traveler will be burning 3.057 gallons.

Current gas prices in the D.C. area average $3.744 per gallon of regular unleaded, up from $3.569 a year ago. Multiply that by the 3.057 gallons needed by our average traveler, and you’ll find that the trip costs $11.45 this year, compared to $10.91 last Thanksgiving.

This is not even counting the “hidden costs” of driving – damages to public health, the environment, and the climate that don’t show up on the price at the pump. For example, some 500 Americans die on the roads each year over the Thanksgiving holiday. These crashes have a huge toll on the country – the National Highway Traffic Safety Administration has estimated a yearly cost of $836 billion from U.S. car crashes, when you account for everything from property damage to lost productivity. Air pollution from cars costs the country as much as $41.6 billion per year; the cost of planet-warming greenhouse gasses released by cars in the U.S. each year could be as high as $48 billion.

While gas prices are not likely to break the bank for most people this Thanksgiving, the holiday has gotten more expensive over the past year. The average Thanksgiving meal is 20% more expensive this year than last, according to a survey from the American Farm Bureau. The average 16 lb. Turkey is $5 more than last year, at $28.96 – an increase driven in part by avian flu, which has killed some 7 million of the birds. Cubed stuffing mix is up a whopping 69%. In a bit of good news, fresh cranberries are down 14%.

Let’s enjoy the cranberry sauce this year, and be thankful for the small mercies.