Walking the beach
But here's the actual math: Light travels at 186,000 miles per second. There are 31,536,000 seconds in a year (60 X 60 X 24 X 365). So, forgetting about leap years, that means light travels 5,865,696,000,000 in a year (31,536,000 X 186,000). The nearest stars, according to our latest wisdom, are around 4 light years away which would be 23,462,784,000,000 miles (5,865,696,000,000 X 4). Since our beach walk round trip is about 4 miles, we divide 23,462,784,000,000 by 4 which gives us a total of 5,865,696,000,000 trips up and down the beach!
The average walking speed of human beings is around 3 miles per hour; but since we stop and practice, take our time, and are walking on sand, I'm thinking it's more like 2 mph. Since each round trip would take us two hours (4 miles divided by 2), we take our trip total (5,865,696,000,000) and multiply by 2 and we get 11,731,392,000,000 hours of walking. We take that total and divide by 24 to get the total number of days: 488,808,000,000. Divide that total by 365 and we get the total number of years we'd have to walk to win our freedom: 1,339,200,000. Only about 1-1/3 billion years of beach walking! That's only a bit more than a third the age of the Earth...(Special thanks to www.metacalc.com)