Mile Marker 0 is either the beginning or end of US-1. The answer is of course a point of view. Regardless, Key West and Mile Marker 0 are synonymous for the end of the road.What better icon can you have on a bottle jacket? This zip-up bottle jacket is a perfect way to keep your beer cold in Key West or at home. Vivid Colors. Sold in sets of 2. From the Mile Marker Zero Collection.