The Hawaii Bicycling League's page, www.hbl.org, has a Bike Route Maps link for road riders, plus
various other helpful/interesting info including upcoming events.
The Windward (eastern, more or less) coast and the North Shore between Honolulu and Haleiwa are the
most popular for longer road rides. At the edge of town, the Makiki Tantalus loop (10 mi.) is not to
be missed, and the ride around Diamond Head is also fun...