I found out on Saturday that all those times I thought "I really should go ride some hills", that I really should have gone and ridden some hills.
I had entered the 30km Black Stump Ride, but ended up taking the "pike" option and switched to the 18km ride at about the 14.5km mark. I'm a bit disappointed with the way things went, but there are lots of reasons it didn't go as awesomely as I had envisaged.