Hi Jeff,
The only race that I know of that is suposed to be slightly longer is the Great Race from Gold Coast to Brisbane. 37 nm or 68 km as the crow flies. Pretty similar length. But the last few ks is usually the killer.

Won overall for the last 2 years by a 14 ft arrow cat.

This race has been completed by a few mad bastards in lasers as well.

We are fairly soft compared to our American friends.