Pi'ilani Highway

This route offers a challenging and diverse cycling experience. The Hana Highway section (Route 360) features winding, mostly paved roads with numerous switchbacks, narrow passages, and one-lane bridges, often wet and slippery due to the rainforest environment. The Piilani Highway section is distinctly different, including significant unpaved sections, gravel, and potholes, particularly a notorious 6-mile stretch past the Kipahulu unit of Haleakala National Park. This part has rolling hills, lava fields, and roads carved into cliffs, with potential for strong headwinds.

The route is approximately 33.4 km (20.7 miles) long and typically takes around 2 hours and 47 minutes to complete by touring bicycle, according to komoot's estimates. However, given the challenging terrain and numerous scenic stops, actual cycling time may vary based on fitness level and how often you pause to enjoy the views.

No, this route is classified as difficult and requires very good fitness. Both the Hana Highway and especially the Piilani Highway sections present significant challenges, including steep climbs, winding roads, and rough, unpaved sections. It is not recommended for beginners.

While there are no specific permits required to cycle the highways themselves, parts of the route pass through or near the Kipahulu District of Haleakala National Park, which is part of the Kipahulu Forest Reserve. Entrance to Haleakala National Park requires a fee. If you plan to stop and explore within the park boundaries (e.g., to access trails like the Pīpīwai Trail or Kūloa Point Trail), you will need to pay the park entrance fee.

Parking options can vary depending on your starting point along the Hana Highway. Many cyclists choose to start early in the morning from towns like Paia or Kahului to avoid heavy traffic on the Hana Highway. Specific parking areas are typically found near popular attractions or trailheads along the route. Due to the popularity of the Hana Highway, starting early is highly advisable to secure parking and enjoy a less crowded ride.

Maui generally has pleasant weather year-round. However, the Hana Highway section is known for its rainforest environment, meaning it can be wet and slippery at any time. The drier months (typically April to October) might offer slightly more predictable weather, but be prepared for rain and humidity regardless. Starting your ride early in the morning is recommended to avoid heavy traffic, especially on the Hana Highway.

While there are no specific prohibitions against dogs on the highways themselves, cycling this challenging route with a dog, especially on a touring bicycle, is generally not recommended. The route involves significant distances, varied and often rough terrain, and limited services, which can be difficult for pets. If you do bring a dog, ensure they are secured, comfortable, and that you have adequate provisions for them.

The route offers two distinct and stunning landscapes. The Hana Highway section immerses you in a lush tropical rainforest with dense bamboo groves, numerous waterfalls, and glimpses of the ocean. The Piilani Highway section, in contrast, provides a more remote and wild landscape with breathtaking ocean views, dramatic coastline, expansive vistas of Haleakala's rolling hills, and lava fields. It's less forested and more open, offering views of the road stretching for miles.

Services are very limited, especially on the Piilani Highway section. While the Hana Highway has some small stands and towns, the Piilani Highway is extremely remote with few stores or reliable water sources between Kula and Hana. It is crucial to plan carefully and carry all necessary provisions, including ample water and snacks, for the entire duration of your ride.

Yes, the route passes through areas that provide access to other trails. Notably, within the Kipahulu District of Haleakala National Park, you can find access to trails such as the Pīpīwai Trail and the Kūloa Point Trail. These are popular hiking trails that offer additional exploration opportunities if you choose to stop.

Given the route's difficulty and remoteness, pack essentials like plenty of water, high-energy snacks, sun protection (sunscreen, hat, sunglasses), rain gear (due to potential rainforest conditions), a basic bike repair kit, and a first-aid kit. Due to limited services, consider carrying extra layers for varying temperatures and a fully charged phone for emergencies.