Mamalahoa Highway (Hawaiʻi Belt Road)

If you're seeking a road cycling adventure that truly tests your legs and rewards you with stunning coastal vistas, the Ho'okena to Miloli'i Beach Park route delivers. This difficult 39.3-mile (63.3 km) journey along the Big Island's coast features a substantial 3943 feet (1202 metres) of elevation gain, typically taking around 3 hours and 25 minutes. You'll traverse varied Hawaiian scenery, from ancient lava fields and 'ōhi'a forests to dramatic ocean views, particularly along the Māmalahoa Highway.

Planning your ride requires careful consideration; this route is best for very fit, experienced cyclists. Services are limited, so you'll need to carry all your water and supplies. The route utilizes public roads like Highway 11, which may have narrow or non-existent shoulders, so defensive riding and high visibility are essential for safety. Consider starting early to make the most of the day and avoid peak traffic.

This route is more than just a ride; it's a journey through a historically rich part of Hawaii. You'll pass Ho'okena Beach Park, once a bustling 19th-century port, and finish near Miloli'i Beach Park, often called the last fishing village in Hawaii. The challenging terrain and unique cultural context make this one of Hawaiʻi County's most distinctive road cycling routes.