running 40:31  6.69 km (6:03 / km) +47m 5:51 / km
On the ONSW website there’s a story about Aston Key’s fantastic results at JWOC. It’s accompanied by a story of how the junior team made a map of the sprint area in advance, using Google Earth and Streetview. The map was almost identical to the actual sprint map on which Aston won gold.
Now I guess this isn’t cheating (like underarm bowling wasn’t illegal at the time), and anyone could do it, but it must have been an advantage for the Australian team to have effectively had time to study the map in advance, which was I believe a ‘new’ map.
Given anybody could make a sprint map, and it would be impossible to enforce a prohibition, the rules should probably be changed to ensure that everyone gets to see a sprint map at least a week in advance.