Ancient temperate rainforest in the Pacific Northwest
Old GrowthModerate
Washington & Oregon, USA

Pacific
Northwest

Ancient temperate rainforests, volcanic peaks, and coastline trails through some of North America's most biodiverse wilderness.

5–10 days
Duration
2,100 m
Max Elevation
North America
Region
Jun – Sep
Best Season
8–18 °C
Avg Temp
Moderate
Difficulty
Overview

Where Rainforest Meets Volcano

The Pacific Northwest is one of the most ecologically diverse regions on earth. Within a single day's drive you can move from old-growth temperate rainforest receiving four metres of annual rainfall to the rain shadow of the Cascades — a landscape of ponderosa pine and basalt desert. Between them rise the volcanic peaks: Rainier, Baker, St. Helens, Hood.

What makes the PNW exceptional for trekkers is the sheer variety of terrain compressed into a relatively small area. The Olympic Peninsula alone contains three distinct ecosystems — rainforest, subalpine, and wild coast — all within a single national park. The North Cascades are the most heavily glaciated mountains in the lower 48 states, with over 300 active glaciers.

The trade-off is weather. The region's extraordinary biodiversity is powered by extraordinary rainfall. Plan for wet conditions at any time of year below 1,500 m. The window of reliable dry weather runs from late June to mid-September — and even then, afternoon thunderstorms are common on the high routes.

Quick Facts
National Parks
Olympic, North Cascades, Mt. Rainier
Annual Rainfall (Hoh)
Up to 4,000 mm
Active Glaciers
300+ in North Cascades
Highest Point
Mt. Rainier, 4,392 m
Permit System
Recreation.gov (book early)
Nearest Hub
Seattle, WA
Explore by Zone
TrailDistanceElevation GainRating
Hoh River Trail31 km one way550 mModerate
Hurricane Hill8 km return370 mEasy
Ozette Triangle13 km loop60 mEasy
When to Go
Jan
Snow at elevation, heavy rain on coast
Feb
Conditions improving late month
Mar
Rainforest vivid; high routes still closed
Apr
Wildflowers begin in lowlands
May
Trails opening; waterfalls at peak
Jun
Best month — long days, low crowds
Jul
Peak wildflowers on Rainier
Aug
Driest month; book permits early
Sep
Autumn colour begins; ideal conditions
Oct
Dramatic light; rain returns
Nov
High routes close; rainforest season
Dec
Winter conditions throughout

☀ Dry · ☂ Rain likely · ❄ Snow at elevation · Amber border = peak season

Field Notes & Warnings

Wilderness permits required for overnight stays in Olympic and North Cascades NP. Book via Recreation.gov months in advance for Jul–Aug.

Black bears are active throughout. Carry bear spray and use bear canisters for all food storage.

Coastal routes require tide table navigation. Some headlands are impassable at high tide — check tables before departure.

Weather changes rapidly. Hypothermia risk even in summer. Carry waterproof layers regardless of forecast.

Guided Trips

Go With a Guide

We run small-group guided trips into the Olympic backcountry and North Cascades each summer. Permits, logistics, and local expertise handled.