This chapter considers the problem of ‘heavy freight’, a problem posited by Anthony Snodgrass in the 1980s concerning how Greeks might have moved heavy goods like marble around the Greek world. A dataset of freestanding marble statues is presented, where the size and the shape of these statues is used to consider how much marble might have been used in the Greek world during various economic production processes. After estimating the scale of the industry, this chapter uses spatial network modelling to consider some of the routes along which marble might have been transported on the sea, using a rules-based system that ships will always have gone the most direct route from-anchorage-to-anchorage. The shape of these networks is then discussed in light of their implications for our understanding of the whole of the Greek world.