The Rotorua Marathon has to be the iconic New Zealand marathon. Lake Rotorua is almost exactly 42 km in circumference with some nicely undulating hills midway to add some extra challenge.
I have run it a few times myself and my father, Gordon, ran it almost every year without fail for what seemed about 20 years. Each time he ran, it was an obsessional gallop to break the magical 3 hour barrier, which he managed several times.
If you are thinking about running it, now is the perfect time to make that decision and the commitment that goes with that decision. If you go to the training pages on the marathon's website, you will find some basic advice that I have written and you should refresh your training plans by reading our Guide to Running a Marathon.