Two Explorers Visit Lapland Once Per Year

And every year they make their way up to Santas Grotto in a hope to see him in the flesh, but they never do. Then always take the exact same route and track the distance. After 10 years of taking the same trip, they notice that the distance to his grotto increases by around 2 miles per year. One explorer turns to the other and says, "Why does it take longer to visit the Grotto each year?"

The second explorer responds, "well why do you think he is called Farther Christmas?"