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Mount Lamlam Summit: Guam's Highest Peak

Hike to Guam's highest point for breathtaking panoramic views and a glimpse into the island's rich cultural and geological history.

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Mount Lamlam, meaning 'lightning' in Chamorro, is Guam's highest peak, offering panoramic views and a rewarding hike. Despite its modest height of 406 meters (1,332 feet), it's known as the world's tallest mountain when measured from the nearby Mariana Trench, the deepest part of the ocean.

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A brief summary to Mount Lamlam Summit

Opening times, essentials, and a few local tips gathered into one calmer, easier-to-scan planning section.

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8MQ8+5JW, Mount Lamlam Summit, Humåtak, GU

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    Getting There

    Driving

    From Hagåtña, take Route 1 (Marine Corps Drive) south. Turn left onto Route 2A, then continue onto Route 2. Follow Route 2 until you reach a red wall on the right side of the road. The Mount Lamlam trailhead is across the street on the left. Parking is available across the street from the trailhead at the Cetti Bay Overlook. Parking is free.

    Taxi/Rideshare

    From Antonio B. Won Pat International Airport (GUM), a taxi or rideshare to the Mount Lamlam trailhead will take approximately 45-60 minutes, depending on traffic. Provide the driver with the address: 8MQ8+5JW, Mount Lamlam Summit, Humåtak, Guam. Typical taxi fares from the airport to this area range from €50-€60. Rideshare costs may vary. Confirm the fare before starting your trip.

    Public Transport

    From the Yigo Bus Terminal, take a bus heading south on Route 1 (Marine Corps Drive) towards Humåtak. Get off the bus at the stop closest to Mount Lamlam, around the Route 15 intersection. From there, it's about a 30-minute walk to the trailhead. Follow Route 15 until you reach the signs for Mount Lamlam and continue towards the trailhead. Bus fare from the airport to the city center is approximately €1-€5.

    Local tips

    Wear sturdy hiking shoes with good traction, as the trail can be steep and slippery, especially after rain.
    Bring plenty of water, sunscreen, and snacks to stay hydrated and energized during the hike.
    Follow the pink ribbons tied to trees to stay on the correct path, as the trail can be overgrown in places.
    Consider wearing long pants to protect your legs from sword grass and potential scrapes.

    Discover more about Mount Lamlam Summit

    Mount Lamlam, Guam's highest point at 406 meters (1,332 feet), offers a unique hiking experience steeped in both natural beauty and cultural significance. The name 'Lamlam,' meaning 'lightning' in the Chamorro language, reflects the reverence the indigenous people hold for this peak.The well-worn 3.5-mile trail to the summit presents a moderate challenge, with some steep sections that can be slippery, especially after rain. The hike typically takes 2-4 hours round trip, rewarding adventurers with stunning 360° views of Guam's southern mountains, coastline, and the vast Pacific Ocean. On a clear day, it's said you can even see as far as the Philippines.Along the way, hikers will encounter diverse terrain, from dense jungle and breezy savannahs to rocky paths. The trail also holds spiritual significance, marked by the 'Stations of the Cross' leading to the nearby Mount Jumullong Manglo, where devout Catholics make an annual pilgrimage. Keep an eye out for native wildlife and unique flora, adding to the rich biodiversity of the area.While not known for archaeological sites directly on the mountain, the surrounding area is rich in Guam's history. The nearby village of Umatac is one of the oldest on the island, with ruins of Spanish fortifications and the site where Ferdinand Magellan is believed to have landed in 1521.
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