Our half-marathon hike! We hike from Mt. Jumullong-Manglo along the southern mountains, then descend to Inarajan Falls and finally out to Inarajan village. Bring: 4 quarts water, sturdy shoes, gloves, sun screen, lunch and snacks, swimsuit, and camera. Special conditions: Sword grass, little shade, steep hills, and a seriously long hike.

We descend 256 steps to the rugged coastline of northeastern Guam, then walk north along rough coral to the fun but scary chimney climb to an overlook for great views. Bring: 3 quarts water, hiking boots, gloves, swim suit, sun screen, lunch, and camera. Special conditions: Walking on rough rocks, possible surf, and a steep climb out up the steps.

We hike to the abandoned Sherman tanks and landing craft at Tank Farm, then visit Guam’s iconic waterfall to enjoy jumping and swimming. Bring: 4 quarts water, hiking shoes, swimsuit, gloves, sun screen, lunch, snacks, and camera. Special conditions: A long hike with little shade, muddy slopes, a tricky stream crossing, and a steep climb using ropes.

We, go to hell and beyond. We make the long steep hike to the summit of Mt. Sasalaguan with its outstanding views, traverse to Atete, climb steeply down into the oven, then reach the summit of Mt. Schroeder. Bring: 4 quarts water, good hiking shoes, gloves, sun screen, lunch and snacks, and camera. Special conditions: Sword grass, steep slopes, long uphill climbs, sword grass, little shade, a long hike.

We explore the Spanish bridge, Spanish oven, and ancient Chamorro latte stones at Sella Bay, with time for snorkeling, swimming, or hanging out beneath the shade of the palms. The hike back to our cars includes the optional waterfall route. Bring: 2 quarts water, hiking shoes, swim suit, snorkel gear, gloves, insect repellent, sun screen, lunch, and camera. Special conditions: A long hike in the sun over, clay, sand, rocks, and mud.

We follow a small cool green hidden stream full of small cascades and swim pools to to 3 big waterfalls on the upper Sella River. The adventurous can continue on to the false summit of Mt. Lamlam. Bring: 3 quarts water, get wet shoes, gloves, sun screen, insect repellent, lunch, and camera. Special conditions: Walking in water through a rocky river, steep slopes through sword grass, and climbing falls with a rope.