The Coromandel is a scenic peninsular bounded by the Hauraki Gulf on one side and the Bay of Plenty on the other. It is not far from Auckland and regarded as one of the beauty spots of the North Island. It has a wide range of lovely bays and broad sandy beaches and the road frequently borders the coastline.
The Coromandel can be a real joy to cycle with clean, safe swimming every few kilometres. The camping grounds are often right on the beach and they can, if you wish, be beautifully isolated. Between the coasts are sealed roads travelling often through thick native bush. The Coromandel Ranges are a bit hilly in parts but I have never heard anyone complain this area was not worth the effort. The views over the sea and valleys are spectacular and some cyclists say this is the best part of their tour of New Zealand.
The route I describe is one that includes the best of the Coromandel with the most suitable touring roads. Bearing this in mind there are side trips to isolated beaches etc. and someone truly smitten with this area could spend many weeks exploring all the side roads, bays, native bush areas and DOC campsites.