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Routes
Road cycling routes
United States
Hawaiʻi County
Keaau

Kea'au to Nanawale Forest Reserve loop

Moderate

3.2

(10)

40

riders

Kea'au to Nanawale Forest Reserve loop

02:48

60.4km

370m

Road cycling

Cycle the 37.5-mile Kea'au to Nanawale Forest Reserve loop, a moderate route through lush forests and coastal views in Puna.

Last updated: February 26, 2026

Waypoints

A

Start point

Parking

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1

27.3 km

Nānāwale Forest Reserve

Highlight (Segment) • Forest

Nānāwale Forest Reserve is totally in the district of Puna and was first designated in December of 1928. The Governor's Proclamation made it official, and today the Nānāwale Forest Reserve …

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2

31.5 km

Pu'ukea Crater

Highlight • Volcano

Cycles ride around the north side of the Pu'ukea Crater. The crater is known as "Jello Mold Hill" because it looks like an upside-down mold. The Pu'ukea Crater area was …

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3

38.9 km

Lava Tree State Monument Park

Highlight • Natural Monument

Lava Tree State Monument is a public park. In 1790, a lava flow preserved a forest, which can be viewed along this 0.7-mile loop trail. The trail is paved, so …

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B

60.4 km

End point

Parking

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Way Types & Surfaces

Way Types

24.6 km

20.0 km

15.8 km

Surfaces

44.5 km

15.1 km

769 m

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (240 m)

Lowest point (10 m)

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Weather

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Today

Monday 1 June

27°C

21°C

73 %

Additional weather tips

Max wind speed: 11.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

How long does it typically take to cycle the Kea'au to Nanawale Forest Reserve loop?

The Kea'au to Nanawale Forest Reserve loop is a moderate racebike route that typically takes around 2 hours and 48 minutes to complete. This duration can vary based on your fitness level and how often you stop to enjoy the scenery.

What is the terrain like on this cycling route?

The route offers diverse terrain. It features largely well-paved surfaces with gentle hills and curious curves, especially within the Nānāwale Forest Reserve. However, be aware of a notable 2-mile stretch on Beach Road within the Hawaiian Homelands segment, which is gravel and known for potholes. This section can be challenging for standard road bikes.

Is this cycling route suitable for beginners?

This loop is classified as a moderate road ride, requiring good fitness. While much of it is paved, the 2-mile gravel section on Beach Road might be challenging for beginners or those on standard road bikes. It's best suited for cyclists with some experience.

What kind of scenery can I expect along the way?

You can expect a varied and lush visual experience. The route passes through old-growth forested areas, thick jungle forests of the Nānāwale Forest Reserve, and offers 'peek-a-boo ocean views'. The broader Puna district is known for its diverse topography, including residential neighborhoods and tropical rainforests.

What notable landmarks or highlights can I see on this route?

Along the route, you'll pass through the lush Nānāwale Forest Reserve. Other nearby highlights include Pu'ukea Crater and the Lava Tree State Monument Park, offering unique natural sights.

Where can I park to access this cycling route?

While specific parking areas are not detailed, the loop starts and ends in the Kea'au area. Cyclists typically find suitable parking in public areas or near local businesses in Kea'au, ensuring they are not blocking private access.

Do I need a permit or pay an entrance fee for this route?

No, there are no specific permits or entrance fees required to cycle the Kea'au to Nanawale Forest Reserve loop. The route primarily uses public roads and does not enter areas requiring special access fees.

Is the Kea'au to Nanawale Forest Reserve loop dog-friendly?

As this route primarily follows public roads, dogs are generally permitted if kept on a leash and under control, especially in residential areas. However, always be mindful of local regulations and private property.

What is the best time of year to cycle this loop?

The Puna district generally has a warm, tropical climate year-round. The best time to cycle is typically during the drier months to avoid the heaviest rains, which can exacerbate the potholes on the gravel section of Beach Road. Always check local weather forecasts before heading out.

Are there any challenging sections on the route I should be aware of?

Yes, cyclists should be aware of a 2-mile stretch of Beach Road within the Hawaiian Homelands segment. This section is gravel and known for numerous potholes, especially after rain. It can be challenging for standard road bikes and may feel remote. Consider a bike suitable for mixed terrain or exercise extra caution here.

Does this route intersect with other trails?

Yes, the route incorporates sections of several local paths. You may find yourself on parts of Old Government Road, Palm Way, Wahi Heiau, Papaya Field Road, Puamana Road, Lava Tree, Halekamahina Loop Road, Homestead Road, and Ala Heiau.

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