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Mt. Lam Lam: Guam's Highest Peak

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Hike Guam's highest peak, Mt. Lam Lam, for stunning panoramic views and a connection to the island's unique natural and cultural heritage.

Ascend Mt. Lam Lam, Guam's highest point, for panoramic views and a connection to the island's unique geology and Chamorro heritage. The moderately challenging hike offers stunning vistas of the island, the Pacific Ocean, and the distant Northern Mariana Islands.

A brief summary to Mt. Lam Lam

  • GU

Local tips

  • Wear appropriate clothing, including long pants and sleeves, to protect yourself from the sun and sharp swordgrass along the trail.
  • Bring plenty of water, as the hike can be strenuous, and Guam's heat and humidity can quickly lead to dehydration.
  • Check the weather forecast before you go, and avoid hiking after heavy rain, as the trail can become slippery.
  • Inform someone of your hiking plans and expected return time.
  • Park at the Cetti Bay Overlook and cross the street to find the trailhead.
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Getting There

  • Driving

    The most common way to reach Mt. Lam Lam is by car. From Tumon Bay, head south on Marine Corps Drive (Route 1). Turn left onto Route 2A, then continue onto Route 2. Drive through Agat and continue for approximately 3 miles. Look for a red wall on the right side of the road. Parking is available across the street at the Cetti Bay Overlook. The trailhead is on the left, across the street from the overlook. Car rentals are available at the airport and in Tumon. Expect the drive to take around 40 minutes from Tumon Bay. There are no tolls. Parking is free.

  • Public Transport

    Guam's public transportation system, the Guam Regional Transit Authority (GRTA), operates bus routes that connect many villages on the island. However, bus service to the Mt. Lam Lam trailhead is limited, and may require a 30-minute walk from the nearest bus stop on Route 1. The standard bus fare is $1.00 per ride, or $3.00 for a day pass. Buses operate Monday through Saturday, with no service on Sundays or holidays. Check the GRTA website for the most up-to-date schedules and route information.

  • Taxi/Ride-Share

    Taxis are readily available at hotels and major shopping centers. Ride-sharing services like Good to Go Rides also operate on Guam. A taxi from Tumon Bay to the Mt. Lam Lam trailhead will cost approximately $80-$100. The standard taxi flag rate is $4.00 for the first mile and $0.80 for every 1/4 mile thereafter. Ride-share fares may vary. Be sure to confirm the fare with the driver before starting your journey.

Discover more about Mt. Lam Lam

Mt. Lam Lam, meaning "lightning" in the Chamorro language, is more than just a mountain; it's a symbol of Guam's natural beauty, cultural significance, and geological wonder. Rising 406 meters (1,332 feet) above sea level, this peak offers breathtaking 360° views of Guam's diverse terrain, from lush interiors to rugged coastlines. What makes Mt. Lam Lam truly unique is its connection to the Mariana Trench, the deepest part of the ocean. From peak to trench floor, the elevation change is the largest on Earth over such a short distance. This geological phenomenon adds to the mountain's allure, making it a must-visit destination for nature enthusiasts and those seeking a connection to the island's dynamic natural history. The hike to the summit is a rewarding experience, with a well-worn trail that takes you through diverse landscapes. Expect a mix of dense jungle, breezy savannahs, and rocky terrain. The trail is generally considered moderately difficult, with some steep sections that may be slippery after rain. Mt. Lam Lam also holds spiritual and cultural significance for the Chamorro people, the indigenous inhabitants of Guam. The mountain's name reflects the reverence and awe with which it has been regarded for generations, and it is considered a sacred place where the physical and spiritual worlds meet. While hiking, you can also visit the nearby Mt. Jumullong Manglo, Guam's second-highest peak, marked by large crosses. This area is significant to local Catholics, who make a pilgrimage to the mountain every Good Friday.

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