Experience Guam’s Great Outdoors! 4 Recommended Trekking Spots in Southern Guam

When people think of Guam, marine resorts usually come to mind, but in this paradise of adventure, you can also enjoy trekking and feel like a true explorer. As you pass through jungles and reach breathtaking scenic points, the view of the ocean from the mountaintops offers an unforgettable experience.
This time, we’ll introduce some of the best trekking spots in southern Guam. While marine sports are fun, trekking through the dynamic natural landscapes of southern Guam is a fantastic way to connect with nature.

1. Eco Adventure Jungle Hiking

How about trekking through the southern eco-spots of Guam and fully enjoying its natural beauty? This tour includes visits to some of Guam’s most famous locations like the calm and wave-free Inarajan Natural Pool and the peculiar Keyhole rock formation, where you can take memorable photos. You’ll also visit ancient cave paintings, allowing you to learn about Guam’s history as you trek.
On this tour, an easy course is offered on odd-numbered days, while on even-numbered days, you can choose a more adventurous trek through the jungle starting from Nimitz Hill—tailored to your fitness level and preferences. The average duration is about 5 to 6 hours. Soak up the negative ions and immerse yourself in Guam’s lush, vibrant nature.

2. Heavenly Hill

Located in Merizo, the southernmost village of Guam, Heavenly Hill is a gently sloping grassy hill. As you climb over volcanic rock-covered grasslands with a side view of the expansive Nimitz Beach—one of the largest in southern Guam—you’re rewarded with postcard-perfect scenic views. This serene trekking course is a popular choice for tours.
Another highlight is the cultural experience, offering a glimpse into the lives of ancient Chamorro people. Enjoying lunch at the summit of Heavenly Hill is a unique treat. From the top, you can gaze out over the cobalt blue Cocos Lagoon and Cocos Island floating in the sea. After the trek, you can take a refreshing dip in the crystal-clear ocean, making it a perfect combination of both mountain and sea adventures. The trek takes about 6 to 7 hours, so it’s well worth the visit.

3. San Carlos Falls

Located deep in southern Guam, trekking to San Carlos Falls—surrounded by palm trees—is a rewarding experience. The trail begins from Nimitz Hill, passing through fields blooming with orchids and leading into a palm jungle, giving you a sense of adventure. Along the way, you’ll need to walk through a river, so wear clothes that can get wet.
At the end of the river trek awaits the majestic and mystical San Carlos Falls—an oasis in the jungle. Standing 9 meters tall and 7 meters wide, its height and beauty make it one of Guam’s most famous waterfalls. The full course from Nimitz Hill takes around 7 hours. Why not explore this healing spot in southern Guam through a rejuvenating trek?

4. Mount Lamlam & Mount Jumullong Manglo

Located in the southwest of Guam, Mount Lamlam—the island’s highest peak—and Mount Jumullong Manglo—the second highest—offer an attractive trekking course. The trail begins at the Sella Bay Overlook, where you’ll see the vast Philippine Sea before you. Mount Jumullong Manglo is relatively easy to walk thanks to well-maintained paths. In contrast, Mount Lamlam’s route is more rugged, so choose based on your fitness level.
The full course takes approximately 6 to 7 hours, but even just trekking to the summit of Jumullong Manglo is enough to enjoy the scenery. From the summit of Mount Lamlam, you'll be treated to breathtaking views of a shimmering emerald-green lagoon and the small, charming Cocos Island. Below lies the dense jungle where Shoichi Yokoi once hid for 28 years after WWII, unaware the war had ended. Let history accompany your trek as you take in the natural beauty.

◎ Summary

We’ve introduced some of the best trekking spots in southern Guam. Whether it’s hiking through caves or trekking to mysterious waterfalls, these routes require stamina—but their stunning beauty makes it all worthwhile. The emerald-green seas and vast natural landscapes visible from the peaks will surely become a lifelong memory. Since some courses can be challenging or hazardous, joining a guided tour is highly recommended.

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