As always, I apologize if this topic has come up in Open Forum before.
But, this topic came up in chat today during the one of the viewings of the movie and I thought I'd tackle it here. I've heard it said that if you try to calculate the number of miles Jack must have driven over the years to meet up with Ennis... you come up with a number that indicates he probably circled the Earth's circumference at least once if you add up all his likely trips. Of course, all of this is approximate since we don't know exactly where he met Ennis for each trip, and we don't know exactly how many trips he made. But, we can make some educated guesses and even the approximations are impressive here.
So, I made a quick study of this. The Earth's circumference north-south is 24,859.82 miles. And, the Earth's circumference at the equator is slightly larger: 24,901.55 miles.
The distance between Childress and Riverton according to MapQuest (I just typed in generic Childress and generic Riverton) is: 920.5 miles. Since we don't know exactly where they met up on each camping trip, I figured Riverton was as good as any marker for his Wyoming destination, especially since Riverton is approximately in the center of Wyoming.
Between 1967 and 1982 (15 years) let's be optimistic and assume that Jack and Ennis met up twice each year, giving us 30 trips. Plus one trip in 1983. Giving a total of 31 likely or possible trips.
920.5 x 31 = 28,535.5 miles
So by either the equatorial standard (24,901.55 miles) or the meridional standard (24, 859.82 miles), Jack probably more-than circled the Earth once in his quest to be with Ennis.
It's a really fascinating thing to think about.
And, I think it's also interesting to think about in terms of Jack's symbol, the wind. The idea that the wind is in constant motion and is like a jet stream circling the earth in different ways makes a lot of sense for Jack, who is essentially in constant motion. And, it's even more interesting if you think about the possibility that Ennis's nature symbol is the earth/Earth.
** edit... actually, it just occurred to me that 950.5 is just the distance one way between Riverton and Childress. So, his driving mileage is actually double what I just wrote.
The full distance would be: 1841 x 31 = 57,071 miles.