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Mount Lamlam Summit: Guam's Highest Peak

Hike to Guam's highest point, Mount Lamlam, for breathtaking panoramic views and a glimpse into the island's rich natural and cultural heritage.

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Ascend to the highest point on Guam, Mount Lamlam, for panoramic views and a connection to the island's natural beauty and Chamorro heritage. The moderately challenging hike offers stunning vistas of the Pacific Ocean and surrounding landscapes, making it a rewarding experience for nature enthusiasts and adventure seekers alike.

A brief summary to Mount Lamlam Summit

  • 8MQ8+5JW, Mount Lamlam Summit, Humåtak, GU
  • Monday 12 am-12 am
  • Tuesday 12 am-12 am
  • Wednesday 12 am-12 am
  • Thursday 12 am-12 am
  • Friday 12 am-12 am
  • Saturday 12 am-12 am
  • Sunday 12 am-12 am

Local tips

  • Start your hike early in the morning to avoid the midday heat and humidity.
  • Bring plenty of water and snacks to stay hydrated and energized during the hike.
  • Wear sturdy hiking shoes as the trail can be rocky and slippery in places.
  • Check the weather forecast before you go and avoid hiking during heavy rain.
  • Consider visiting during the dry season (December to April) for the best hiking conditions.
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Getting There

  • Car

    From the Guam International Airport in Barrigada, head south on Route 1 (Marine Corps Drive). Continue on Route 1 until you reach Route 2 in Agat. Turn left onto Route 2 and follow the signs to Umatac. Just before Umatac, look for the Cetti Bay Overlook on the right. Park here. The Mount Lamlam trailhead is across the street from the Cetti Bay Overlook. There is no fee to park at the Cetti Bay Overlook.

  • Public Transport

    From the Guam International Airport, take a bus towards Humåtak. The bus will follow Route 1. Get off the bus at the nearest stop to the Cetti Bay Overlook on Route 2, near Umatac. From there, walk to the Cetti Bay Overlook. The Mount Lamlam trailhead is across the street from the overlook. Bus fare is approximately $4 for a day pass.

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Discover more about Mount Lamlam Summit

Mount Lamlam, meaning "lightning" in the Chamorro language, stands as Guam's highest peak, rising 406 meters (1,332 feet) above sea level. While modest in height compared to other mountains, it holds a unique distinction: measured from its base in the nearby Mariana Trench, the deepest part of the ocean, it represents one of the greatest changes in elevation over a short distance on Earth. This geological feature, combined with its cultural significance and breathtaking views, makes Mount Lamlam a must-visit destination. The hike to the summit is a rewarding experience, suitable for most hikers with a moderate level of fitness. The well-worn trail is approximately 3.5 miles (5.6 km) round trip and can be completed in 2 to 4 hours. The path winds through diverse terrain, including dense jungle, breezy savannahs, and rocky areas. Along the way, hikers can admire the island's diverse flora and fauna, with opportunities to spot local bird species and native plants. At the summit, hikers are rewarded with panoramic views of Guam's stunning mountain terrain and rugged coastlines. On a clear day, you can see the entire island, the azure waters of the Pacific, nearby Cocos Island, and even the distant Northern Mariana Islands. The summit is marked by a concrete platform with a geodetic marker, as well as a flagpole with the Guam and U.S. flags. Mount Lamlam also holds spiritual and cultural significance for the Chamorro people, the indigenous inhabitants of Guam. The mountain is considered a sacred place where the physical and spiritual worlds meet. Every year, devout Catholics trek up to the nearby Mount Jumullong Manglo, marked by large crosses, on Good Friday as part of the Stations of the Cross. Whether you're a hiker, a nature lover, or simply seeking stunning landscapes, a visit to Mount Lamlam offers an unforgettable experience that connects you to the heart and soul of Guam.

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