The Grove of the Patriarchs is a 1.5-mile loop trail at Mount Rainier's Ohanapecosh area that leads to an island of 1,000-year-old Douglas fir, western red cedar, and western hemlock. It's the flattest and most accessible trail in the park — suitable for strollers, toddlers, and seniors — and reaches the trees via a suspension bridge over the Ohanapecosh River. The trailhead is 14 miles north of Packwood on SR-123 and about 50 miles from Ashford through the park. A National Park pass is required; the trail is open from late spring through fall, and October is the best month when maple understory turns gold beneath the ancient trunks.
Trail Stats
| Stat | Detail |
|---|---|
| Distance | ~1.5 miles (loop including bridge and island) |
| Elevation gain | <50 ft — nearly flat |
| Difficulty | Easy — suitable for all ages and abilities |
| Trail surface | Wide, well-maintained gravel path |
| Time required | 45–75 minutes (more if you linger under the trees) |
| Stroller accessible | Yes, to the bridge — suspension bridge is not stroller-passable |
| Dogs allowed | No (national park trail) |
| Best season | May–November; October peak for fall color |
| Pass required | NPS America the Beautiful or $35/vehicle day pass |
| Distance from Ashford | ~50 miles / 1.5 hours (through the park) |
| Distance from Packwood | ~14 miles north on SR-123 |
| Distance from Seattle | ~95 miles / 2.25 hours via WA-410 and SR-123 |
What Makes the Grove of the Patriarchs Special
Most visitors to Mount Rainier spend their time at Paradise — subalpine meadows, glacier views, the Jackson Visitor Center. The Grove of the Patriarchs is fundamentally different: it's a temperate rainforest on a river island, and it's one of the few places in a national park where you stand next to a living tree older than 1,000 years and can reach out and touch it.
The island exists because the Ohanapecosh River has repeatedly flooded and shifted course over centuries, but the island itself stayed above water. That protection from fire — an island can't burn easily — combined with the rich volcanic soils of the upper Ohanapecosh River valley, created conditions where trees simply kept growing for a very long time without being killed. The result is a grove of old-growth that's genuinely unlike anything else in the park.
The three dominant species each have a distinct personality:
- Douglas fir — the tallest trees, with deeply furrowed orange-brown bark nearly a foot thick. The bark alone is a fire-resistance adaptation that took centuries to develop. Several trees here are estimated at 700–1,000 years old and exceed 285 feet in height.
- Western red cedar — the widest trees. Their fibrous, shredding reddish bark wraps trunks that exceed 35 feet in circumference in the largest specimens. Cedar was central to Indigenous cultures across the Pacific Northwest: canoes, longhouses, clothing, baskets. Trees this size were old long before European contact.
- Western hemlock — the graceful trees with drooping leaders (the tip of the main trunk bends over). Hemlock grows in the shade of the others and fills in the forest understory. Less massive than cedar or fir, but still hundreds of years old.
The Trail in Detail
Trailhead to the Bridge (0 to 0.5 mi)
The trail begins at the Grove of the Patriarchs parking area, which is a small turnout just off the Stevens Canyon Road junction with SR-123, immediately inside the park boundary. From the parking area, the trail follows the Eastside Trail briefly south, running parallel to the Ohanapecosh River through old-growth that's impressive but not yet the main attraction.
The forest floor here is carpeted with sword ferns, oxalis (wood sorrel), moss, and vanilla leaf — the classic Pacific Northwest rainforest understory. Even in July, it feels cool and dim beneath the canopy. The river is audible to your right. The path is wide and clear; there are no navigation decisions to make.
The Suspension Bridge
At roughly 0.5 miles, you reach the suspension bridge over the Ohanapecosh River. The bridge is perhaps 60 feet long and spans the main channel. It bounces and sways with foot traffic — this is expected and the bridge is completely safe — but hikers who are sensitive to heights or movement may find it mildly uncomfortable.
The view from the bridge is worth a pause: the Ohanapecosh River runs clear and green below, tumbling over smooth volcanic rock. This is glacially-sourced water from the upper Ohanapecosh Glacier, cold and clean. After heavy rain, it runs milky grey from glacial flour.
Note: strollers and wheelchairs cannot cross the suspension bridge. Families with strollers can walk the approach trail to the bridge and back (about 1 mile RT) for a partial experience of the old-growth.
The Island Loop (0.5 to 1.0 mi)
Once across the bridge, you're on the alluvial island. The loop is approximately 0.5 miles. NPS trail signs mark the route, but the island is small enough that you can't really get lost.
The trees become noticeably larger within 50 feet of crossing the bridge. The island's canopy is so dense that even on a sunny summer afternoon, the light on the forest floor is filtered and green — the same light you see in aquariums. Ferns and mosses cover fallen logs 10 feet in diameter. Several trees have informational plaques with approximate size measurements and ages.
Take your time on the loop. The easiest mistake visitors make is walking the 0.5-mile island in 10 minutes when the same loop walked slowly and with attention — looking up, looking at bark textures, finding the seedling growing out of a nurse log — takes 30 minutes and leaves a more lasting impression.
Return (1.0 to 1.5 mi)
Re-cross the suspension bridge and return along the Eastside Trail to the parking area. The return is identical to the approach — same flat, easy path through second-growth old-growth toward the trailhead.
Best Time to Visit
| Month | Trail Conditions | Highlights | Crowds |
|---|---|---|---|
| May–June | Open; lush green fern growth after snowmelt | Wildflower understory, vivid green mosses | Low–moderate |
| July–August | Peak season; fully open | Best weather; combine with Ohanapecosh hot springs | High — weekends especially |
| September | Excellent; stable weather | Early huckleberry color; quieter crowds | Moderate |
| October ★ | Open (SR-123 typically closes late Oct–Nov) | Big-leaf maple turns gold beneath ancient trunks — outstanding fall color | Low–moderate |
| November–April | SR-123 typically closed; trail inaccessible | — | — |
Getting There
From Ashford (Southwest Entrance)
Drive east on WA-706 through Longmire, continue through the park on Stevens Canyon Road toward the Ohanapecosh area. Where Stevens Canyon Road meets SR-123, turn south (right). The Grove of the Patriarchs parking area is on the right within 0.1 miles — immediately after you exit the park gate area. Total: ~50 miles, 1.5 hours.
From Packwood (via US-12 and SR-123)
The most direct route from Packwood: take US-12 east a short distance, then turn north on SR-123. The trailhead is 14 miles north — about 25 minutes. This is the fastest approach if you're staying in Packwood or arriving from the south on US-12.
From Seattle (via WA-410)
Drive WA-410 east through Enumclaw, over Cayuse Pass, then turn south on SR-123. The trailhead is about 10 miles south on SR-123 from the WA-410 junction. Total: ~95 miles, 2.25 hours from downtown Seattle.
Parking and Planning Notes
- Lot size: The trailhead parking area holds approximately 15–20 vehicles. It fills on summer weekend mornings by 10am.
- Overflow: The Ohanapecosh Campground entrance is nearby; check with the campground host about overflow parking.
- Ohanapecosh Visitor Center: Open summers, about 0.5 miles south on SR-123 from the trailhead. Worth stopping for exhibits on old-growth ecology and the hot springs history.
- Ohanapecosh Hot Springs: The hot springs themselves are no longer developed for bathing (they were closed by NPS decades ago), but the Trail of the Shadows at Longmire is a related experience. The hot spring sites are visible from the Ohanapecosh campground area.
- Combining with Silver Falls: Silver Falls trail begins from the Ohanapecosh Campground and is a 3-mile RT hike to a 40-foot waterfall on the Ohanapecosh River. Easily combined with the Grove for a half-day at Ohanapecosh.
- Fly fishing the Ohanapecosh: The river alongside the Silver Falls Trail holds wild cutthroat trout. If you're combining fishing with the Grove visit, see the Ohanapecosh River fly fishing guide for regulations, best pools, and seasonal conditions.
Grove of the Patriarchs vs Other Easy Hikes at Rainier
| Trail | Distance | Gain | Best For | Area |
|---|---|---|---|---|
| Grove of the Patriarchs ★ | 1.5 mi loop | <50 ft | All ages, old-growth, families | Ohanapecosh |
| Twin Firs Trail | 0.4 mi loop | Flat | Strollers, quick old-growth taste | Longmire area |
| Trail of the Shadows | 0.7 mi loop | Flat | Longmire history, hot spring seeps | Longmire |
| Narada Falls | 0.3 mi RT | ~100 ft | Waterfall view, quick stop | Paradise road |
| Silver Falls (Ohanapecosh) | 3.0 mi loop | ~350 ft | Waterfall, river canyon, easy pace | Ohanapecosh |
| Carter Falls Trail | 2.6 mi RT | ~500 ft | Old-growth + waterfall, ages 7+ | Longmire area |
What to Know Before You Go
- Stay on the trail: The island ecosystem is fragile. The tree roots extend far from each trunk and compaction from off-trail footsteps causes real damage. The boardwalk sections exist specifically to protect root zones.
- No dogs: Dogs are not permitted on any national park trails. Leave dogs at the trailhead — they overheat in cars; consider leaving them at the cabin or with a pet sitter.
- No collecting: Do not collect cones, bark, soil, or any natural material from the park.
- Selfie ethics: Several large trees have visible damage from people climbing their root buttresses and bark. Photograph from the trail.
- Cell service: Limited to none in the Ohanapecosh area. Download maps and trail information before arriving.
Frequently Asked Questions
How long is the Grove of the Patriarchs hike at Mount Rainier?
The Grove of the Patriarchs trail is approximately 1.5 miles round trip with less than 50 feet of elevation gain — one of the flattest hikes in the park. Most visitors take 45 to 75 minutes, spending extra time beneath the ancient trees.
How old are the trees in the Grove of the Patriarchs?
The oldest trees are estimated at over 1,000 years old. The grove includes Douglas fir, western red cedar, and western hemlock. The largest trees have trunks exceeding 25–35 feet in circumference. The island's protection from floods and wildfire over many centuries allowed them to reach these sizes.
Where is the Grove of the Patriarchs trailhead?
The trailhead is at a small parking area at the SR-123 / Stevens Canyon Road junction, just inside the park boundary at the Ohanapecosh area. It's approximately 14 miles north of Packwood and about 50 miles from Ashford via the park road.
Is the Grove of the Patriarchs good for kids?
Yes — it's one of the best family hikes in the park. The trail is nearly flat and wide, and the suspension bridge over the Ohanapecosh River is a highlight for children. Even toddlers can walk this trail. The scale of the ancient trees creates immediate wonder for kids and adults alike. Note: strollers cannot cross the suspension bridge.
What is the best time of year to visit the Grove of the Patriarchs?
October is often the best month — big-leaf maple beneath the ancient trunks turns brilliant gold, creating a striking color contrast. Summer (July–September) is also excellent but busier. Late spring (May–June) has lush green ferns and fewer crowds. The access road (SR-123) typically closes in winter, so the grove is a three-season destination.