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Mount Lamlam: Guam's Iconic Peak

Hike Guam's Mount Lamlam for panoramic views and a connection to the island's unique natural and cultural history.

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Hike to the summit of Mount Lamlam, Guam's highest point, for panoramic views and a connection to the island's rich history and culture. While modest in height, it's considered the world's tallest mountain when measured from its base in the Mariana Trench.

A brief summary to Mount Lamlam Trail Head

  • 8MG8+9M2, 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

  • Hike during the dry season (December-April) for comfortable temperatures and less chance of rain.
  • Bring plenty of water, sunscreen, and wear sturdy shoes.
  • Be aware that the trail can be slippery after rain.
  • Consider wearing long pants to protect from sword grass.
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Getting There

  • Driving

    From Tumon Bay, drive 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 where you can park. The trailhead is across the street on the left, marked with a small green sign. If you reach Umatac, you've gone too far. Parking is free.

  • Public Transport

    The Guam Mass Transit Authority (GMTA) operates bus routes connecting most villages on Guam. Take the bus to the nearest stop on Route 1 to the Mount Lamlam Trailhead. From there, it's about a 30-minute walk to the trailhead. A one-way bus ticket is approximately $1.00, and a daily pass is $3.00. Buses operate Monday through Saturday, with limited service on Sundays and holidays.

  • Taxi/Ride-share

    Taxis are readily available at hotels and major shopping centers. A taxi from Tumon Bay to the Mount Lamlam trailhead will cost approximately $40-$50. Ride-sharing services like Uber or Lyft may also be available. The standard flag rate for taxis is $2.40, $4.00 for the first mile, and $0.80 every ¼ mile thereafter.

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Discover more about Mount Lamlam Trail Head

Mount Lamlam, meaning "lightning" in the Chamorro language, is a must-visit destination for nature enthusiasts and those interested in Guam's rich history. Rising 406 meters (1,332 feet) above sea level near Agat, this peak offers stunning 360-degree views of Guam's mountain terrain and rugged coastlines. Geologically, Mount Lamlam is part of the Mariana Arc, formed by undersea volcanoes millions of years ago. Its steep rise is a reminder of the immense geological processes at play beneath the ocean's surface. The mountain holds spiritual and cultural significance for the Chamorro people, who believe it's a sacred place connecting the physical and spiritual worlds. The hike to the summit is approximately 2.4 km (1.5 miles) long, with a steady ascent that takes one to two hours. The trail passes through diverse ecological zones, offering views of the coastline and forests. The best time to hike is during the dry season (January to May). Be prepared with water, sun protection, and sturdy footwear. The trail can be rocky and slippery after rain. Every year, local Catholics participate in a tradition of carrying large crosses to the secondary peak of Mount Jumullong Manglo during Easter weekend. The trailhead is located across from the Cetti Bay Overlook.

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