Answers:

chickadilly
California

I drove from San Diego – if you go through Jackson it takes about 21-22 hours. If you go through Idaho Falls to West Yellowstone it’s probably about 20 hours. It’s longer to go through Jackson but I, personally, think it’s worth the extra time to see the Tetons. They’re amazing.

atman
West Yellowstone

actually, the distance from Jackson to the town of West Yellowstone is about 133 miles, through the park. Outside the park it’s about 135 miles.

It takes longer going through the park because of the speed limit and possible buffalo jams.

The park is 2.2 million square acres. A lot of people underestimate how much time it takes to see the park. At the hotel I work at people come in with a reservation for 1 day and ask “is 1 day enough to see the park?” If you drive around non-stop and don’t get out to see anything then you could probably see the whole park, but you’d be missing the point. Yellowstone, you need to drive around a lot but it’s essentially a walking park. There are hundreds and hundreds and hundreds of miles of hiking trails. There are waterfalls and geysers that you can’t get to unless you hike to them.

chickadilly
California

I guess I should have explained that – I do know that—the speed limit (and possibility of animals in the road) is what makes the trip longer, not mileage.

(I’m currently IN Yellowstone for the summer – it took me four hours to get from Mammoth Hot Springs to Jackson a few weeks ago because of speed limits and animals in the road.)