Nānāwale Forest Reserve

The Kea'au to Nanawale Forest Reserve loop offers a deep dive into the Big Island's Puna District, guiding you through vibrant rainforests and past the striking, lava-sculpted landscape of Lava Tree State Monument Park. You'll experience the unique transition from lush, green 'ōhi'a forests to areas marked by ancient volcanic flows, all from the saddle of your bike. This route provides a true sense of discovery, showcasing the island's raw, untamed beauty.

This moderate road cycling route covers a substantial 37.5 miles (60.4 km) with 1201 feet (366 metres) of elevation gain, typically taking around 2 hours and 48 minutes to complete. While there isn't a single designated trailhead, you'll generally begin and end your journey in the Kea'au area, where parking is usually accessible. Mornings are often the best time to cycle, offering cooler temperatures and calmer winds for a more enjoyable ride.

Cycling in the Puna district of Hawaii is a fantastic way to explore the Big Island's diverse ecosystems and volcanic history up close. This loop provides a memorable experience, allowing you to immerse yourself in the sights, sounds, and scents of the area. It's an excellent choice for those seeking a substantial road cycling adventure that combines natural beauty with a good physical challenge.