Hoh River Trail to Blue Glacier
Journey from one of the world's most magnificent temperate rainforests to the glaciated heart of the Olympic Mountains. This classic trek follows the glacially-fed Hoh River through a cathedral of ancient Sitka spruce and western hemlock, culminating in breathtaking views of the Blue Glacier on Mount Olympus.

- Difficulty
- hard
- Distance
- 36 mi
- Elevation gain
- 3700 ft
- Permit
- Not required
Why It's Special
The Hoh River Trail is more than a hike; it's a pilgrimage through one of the planet's most enchanting ecosystems. Beginning in the Hoh Rain Forest, a UNESCO World Heritage Site, the trail offers a rare opportunity to experience a primeval landscape. You'll walk beneath a canopy of colossal Sitka spruce and western hemlock, some over 1,000 years old, with trunks draped in thick carpets of club moss and licorice fern. This is one of the quietest places in the continental United States, where the dominant sounds are the chirping of birds, the gentle flow of the Hoh River, and the crunch of your boots on the forest duff.
The magic of the trail lies in its transformative journey. For over 17 miles, you gradually ascend from the impossibly green, moss-laden lowlands into the rugged alpine zone. The flora changes, the air thins, and the sound of the river grows from a murmur to a roar. The final destination, Glacier Meadows, serves as a basecamp for mountaineers, but for hikers, the prize is the view from the lateral moraine of the Blue Glacier. Here, you stand at the edge of a different world, gazing across a vast, fractured river of ice flowing down from the summit of Mount Olympus itself. It’s a powerful transition from life-giving forest to raw, elemental ice, encapsulating the incredible diversity of Olympic National Park in a single, unforgettable trek.
Best Season
While the lower sections of the rainforest are accessible year-round, the complete journey to Blue Glacier is best undertaken from late May through early October.
- Late Spring (May - June): This is a magical time to visit. The rainforest is at its most vibrant green, the crowds are thinner than in mid-summer, and wildflowers begin to bloom in the meadows. Be prepared for potentially higher river crossings and some lingering snow patches at higher elevations near Glacier Meadows.
- Summer (July - August): This is peak season, offering the most stable and warmest weather. The trail is typically snow-free all the way to the glacier moraine, allowing for the best and safest access to the viewpoints. The trade-off is higher foot traffic and the need to book permits well in advance.
- Early Fall (September - early October): With fewer bugs, cooler temperatures, and the first hints of autumn color in the subalpine maples, this is a favorite time for many experienced backpackers. The forest is still lush, and the summer crowds have dissipated.
Logistics
Proper planning is essential for this multi-day wilderness excursion. The full round trip is typically done over 3-5 days.
- Permits: A wilderness camping permit is required for all overnight stays in the backcountry. These must be obtained from the National Park Service. During the peak season (late May through September), quota limits are in effect for popular camping areas like Olympus Guard Station and Glacier Meadows, and reservations are highly recommended well in advance via recreation.gov.
- Trailhead: The hike begins at the Hoh Rain Forest Visitor Center, located at the end of Upper Hoh Road, about an hour's drive south of Forks, WA. The parking lot can fill up early, especially on summer weekends.
- Food Storage: Bear canisters are mandatory for storing all food, garbage, and scented items. Black bears and other wildlife are active in the area. Canisters can be rented from the Wilderness Information Center (WIC) in Port Angeles or other local gear shops.
- Camping: Designated campsites are spaced along the trail, including Mount Tom Creek, Five Mile Island, Olympus Guard Station, Lewis Meadow, and the high-elevation camp at Glacier Meadows. All have access to water (which must be filtered) and primitive toilets.
Pro Tips
- Embrace the Rain: This is a rainforest. Pack high-quality waterproof layers (jacket and pants) and a pack cover, even if the forecast looks clear. The weather can change in an instant, and "liquid sunshine" is part of the authentic experience.
- Trekking Poles are Your Friends: Poles are invaluable for navigating muddy sections, managing the relentless distance, and especially for the steep, final ascent to Glacier Meadows and the moraine trail.
- Climb the Moraine: The established trail ends at Glacier Meadows camp. To get the iconic glacier views, you must follow a primitive, steep path up the lateral moraine. It's a strenuous but non-technical scramble that is absolutely worth the effort. Check with rangers on the current condition of this path.
- Watch for Wildlife: The Hoh River valley is home to a large herd of Roosevelt elk. They are magnificent but can be territorial. Keep a safe distance and never feed wildlife. Also be aware of black bears and mountain lions.
- Start Early, Camp Strategically: An early start helps you secure parking and a good spot at your chosen campsite. Consider staying at Five Mile Island or Olympus Guard Station on your first night to break up the mileage before pushing on to Glacier Meadows.
