Loowit Trail

The Loowit Trail is a 45 km loop around Mount St. Helens in Washington State, United States, gaining approximately 1,311 m of elevation over 2–4 days. Rated very difficult, this raw volcanic circuit threads through active blast zones, lava boulder fields, and summer wildflower meadows, delivering one of the most dramatic multi-day backpacking experiences in the entire Pacific Northwest.

About the Loowit Trail

Named after the Klickitat people's legendary name for Mount St. Helens — a beautiful maiden — the Loowit Trail completes a full 45 km circumnavigation of the volcano, managed by the Gifford Pinchot National Forest. The route lies entirely within the Mount St. Helens National Volcanic Monument, established in 1982 in the aftermath of the May 18, 1980 eruption that collapsed the north flank and blasted 2.9 km³ of rock across the surrounding landscape.

That cataclysm is still visible at every step. The trail crosses grey pumice plains where dense forest once stood, drops into gullies gouged by pyroclastic flows, and skirts active erosion scarps on the northern side. Yet the recovery is equally remarkable: lupine and paintbrush carpet the summer flats in purple and red, elk graze the margins of the blast zone, and raptors ride thermals above the still-steaming crater rim.

The Loowit demands real experience. Three rope-assisted scrambles exist on the western segment, and the constant descent–ascent cycle through volcanic gullies accumulates fatigue faster than the total elevation gain suggests. Route-finding is technical in sections — the path is marked by cairns and occasional posts rather than continuous tread, and the lava boulder fields leave no obvious trail at all. Confident navigation with map, compass, and GPS is not optional.

Most hikers choose one of four access trailheads: June Lake on the south (1.5 km approach, no trailhead fee), Climbers’ Bivouac on the southwest (3 km approach), Ape Canyon on the southeast (5.5 km approach), or Windy Trail on the east. June Lake is the most popular starting point for its balance of approach distance and access road quality — the road is fully paved and accessible to standard 2WD vehicles.

Route Overview & Stages

The full Loowit circuit covers approximately 45 km with 1,311 m of total elevation gain. The stages below reflect the counterclockwise direction starting from June Lake — the preferred direction because it places the hardest terrain (western rope scrambles and Toutle River crossing) early in the trip when energy is highest. Stage distances include the June Lake approach.

Stage 1 is the most demanding single day. From June Lake the trail climbs to the Loowit circuit before heading north and west into the blast zone proper. The terrain shifts quickly from forest fringe to open moonscape. Three short rope-assisted scrambles across steep northwest gullies require both hands — trekking poles must be stowed during these sections. The North Fork Toutle River crossing at the end of Stage 1 can run knee-deep in early season; late July and August are typically safest for the ford.

Stage 2 crosses the south and southeastern flank, following the Loowit Trail past the Muddy Creek drainage — another seasonal ford — before climbing toward Pumice Butte at around 1,390 m. Views of Mount Adams and Mount Hood open up on the southeast horizon. Water becomes scarce on this stage from mid-August onward; carry at least 3 litres out of Toutle River camp.

Stage 3 traverses the Plains of Abraham, a flat volcanic plateau at 1,250–1,350 m that feels utterly otherworldly in its grey, boulder-scattered expanse. The plains funnel into Windy Pass at 1,340 m before the trail descends back toward the June Lake approach, completing the circuit. Stage 3 has the gentlest gradient but covers the most distance, and demands full fuel and water reserves going in.

Highlights & Points of Interest

• Loowit Falls — A seasonal waterfall on the north side of the crater, visible from a short exposed overlook near the trail. Most powerful in June and early July when snowmelt is running at full volume.
• The Breach (North Fork Toutle Valley) — The colossal scar left by the 1980 debris avalanche. The valley floor sits roughly 180 m below the surrounding terrain and is still actively eroding — a visceral reminder of the eruption's scale.
• Plains of Abraham — A broad, flat pumice plain on the eastern flank at ~1,300 m. The grey landscape, scattered lava boulders, and unobstructed views of the crater give this stretch an almost Martian atmosphere.
• Windy Pass — The 1,340 m saddle connecting the eastern and northern flanks. On clear days the pass delivers simultaneous views of Mount Rainier to the north, Mount Adams to the east, and Mount Hood to the south.
• Pumice Butte — An elevated bench on the southeast flank where summer wildflowers — lupine, Indian paintbrush, phlox — grow dense in the pumice soil despite the surrounding barrenness.
• Ape Canyon — A dramatic 200 m-deep canyon on the southeast carved by post-eruption lahars. The Ape Canyon Trail junction here is a key navigation landmark and a logical rest stop.
• June Lake — A small, clear lake on the south flank formed in a lava depression. It serves as both trailhead and a welcome sight at journey's end, with flat camping nearby.
• Rope-Assisted Gully Scrambles — Three fixed-rope sections on the northwest side cross steep volcanic gullies. Technically straightforward but exposed, and a defining feature of the full circuit.

Best Time to Hike the Loowit Trail

The Loowit Trail is a July–September hike. Snow covers the upper gullies and western scrambles well into summer on average-snowpack years, and the North Fork Toutle River runs too high and cold for a safe unroped ford before mid-July in most seasons.

July offers the bonus of Loowit Falls at full flow and the first wildflower blooms on the south flank, but snow may still linger in the western gullies and the Toutle River crossing requires careful timing and cold-water preparation.

August is the single best month to hike the Loowit Trail. As of 2026, conditions follow the typical Pacific Northwest pattern: snow has cleared from all gullies by early August, wildflowers are at peak on Pumice Butte, water sources are manageable with careful carrying, and stable high-pressure systems keep afternoon thunderstorm risk low. Aim for the first two weeks of August before late-season desiccation dries the smaller streams.

September remains viable but water carries grow longer — 4+ litres between sources in places — and the first autumn systems can arrive by mid-month. Overnight temperatures above 1,200 m can drop below freezing by late September, requiring a three-season sleeping bag rated to at least -5 °C.

Practical Information

Accommodation

There are no huts, shelters, or mountain lodges on the Loowit Trail. All accommodation is dispersed backcountry camping at established sites. Three reliable camping areas exist along the circuit:

• North Fork Toutle River (~km 14 from June Lake) — Flat, sheltered sites near the river with water access. The standard first-night camp for counterclockwise hikers.
• Plains of Abraham (~km 25) — Multiple flat pumice sites with dramatic crater views. Exposed to wind; no reliable water source — carry in from the previous source.
• South Flank near June Lake approach — Sites near the start and finish, useful for a pre-hike base or final-night camp.

A mandatory 14.5 km no-camping zone runs through the blast zone between the Toutle River and Windy Pass — this is strictly enforced and must be factored into every stage plan. All dispersed backcountry sites on the Loowit Trail are free. Developed trailhead campgrounds at June Lake and Climbers’ Bivouac charge approximately €9–13 per night and can be reserved at Recreation.gov.

Getting There & Back

There is no public transport to any Loowit Trail trailhead. A rental car is essential for all access points.

From Portland International Airport (PDX): approximately 95 km, 1 hour 45 minutes via I-5 North to exit 21, then WA-503 East through Cougar to Forest Road 83 (June Lake Trailhead). PDX is the preferred gateway airport.

From Seattle-Tacoma International Airport (SEA): approximately 215 km, 2 hours 30 minutes via I-5 South.

Forest Road 83 to the June Lake Trailhead is fully paved and passable in standard 2WD vehicles. Access to Climbers’ Bivouac via Forest Road 81 requires a high-clearance vehicle. No shuttle service operates between trailheads; if you plan a point-to-point variation starting at one trailhead and finishing at another, arrange your own vehicle exchange or use two cars.

Permits & Fees

No overnight backpacking permit is required for the Loowit Trail. A Northwest Forest Pass is required for all vehicles parked at the June Lake, Climbers’ Bivouac, and Ape Canyon trailheads:

• Daily pass: approximately €4.60 (~$5 USD)
• Annual Northwest Forest Pass: approximately €27 (~$30 USD)
• America the Beautiful Annual Pass: approximately €72 (~$80 USD), valid at all federal recreation areas including this trailhead

A free campfire permit is required if you plan to have an open fire — obtain one from the Gifford Pinchot National Forest Ranger District before departure. Stoves are strongly preferred given the fire-sensitive volcanic environment. A Mount St. Helens National Volcanic Monument entry fee applies to the visitor center area but does not affect trail or trailhead access. Check the Washington Trails Association for current seasonal closures and conditions before your trip.

Gear & Packing List

The Loowit's volcanic terrain — loose pumice, lava boulders, rope scrambles, and long waterless carries — rewards a lighter pack. Every extra kilogram multiplies fatigue on the gully cycle and shifts your centre of gravity on uneven footing. For a detailed comparison of current options, see our guide to the best ultralight backpacks of 2026.

Pack selection: The 3-day duration and remote nature of the route call for a pack in the 50–65 litre range. The Osprey Aether 65 is a reliable choice for hikers who prioritise hip-belt load transfer on multi-day carries. Those focused on base weight will prefer the Zpacks Arc Haul Ultra 60, a carbon-framed ultralight option that handles rugged terrain without the weight penalty. For sub-7 kg base-weight setups, the Hyperlite Mountain Gear 3400 Windrider at under 900 g is a strong choice for experienced lightweight backpackers.

Loowit-specific essentials:

• Water capacity: minimum 4 litres — long dry stretches east of Ape Canyon and on the Plains of Abraham demand significant carrying capacity
• Trekking poles — essential for gully stability; must be quickly stowable for rope scrambles
• Gaiters — pumice dust infiltrates footwear relentlessly on the northern and eastern sections
• Navigation kit — paper topo map (7.5-minute USGS quad), compass, and GPS; cairns wash out and trail posts are sparse in lava fields
• Sun protection — high UV at elevation combined with light-coloured reflective pumice significantly amplifies burn risk
• Warm layers — temperatures above 1,400 m can drop below 5 °C overnight even in August
• Blister care — pumice dust and long mileage on hard volcanic rock make blisters near-certain without proactive foot management

Food planning on a 3-day volcanic loop demands precision. Read how many calories you need hiking a full day before building your food kit — the Loowit's relentless gully climbs burn considerably more than a typical trail of the same distance, and under-fuelling on day two is a common mistake.

Similar Trails You Might Like

The Loowit Trail occupies a rare niche — a full volcano circuit with genuine route-finding challenge and raw volcanic drama. The following routes share something of that character. For an epic long-distance extension, the Pacific Crest Trail passes through Washington's Cascades within 30 km of Mount St. Helens and can be linked directly from the Loowit area. The Mount Whitney Trail in California delivers comparable high-altitude commitment at 4,421 m. The Half Dome Trail in Yosemite shares the Loowit's cable-assisted, exposed terrain. Those seeking concentrated exposure in a shorter route will find the Angels Landing Trail–West Rim Trail in Zion equally gripping. For the truly committed long-distance hiker, the Continental Divide National Scenic Trail at 4,988 km is the ultimate expression of the wilderness-first mindset.

Frequently Asked Questions

When is the best time to hike the Loowit Trail?

August is the best month, specifically the first two weeks. Snow has cleared from all gullies and the Toutle River ford is at its safest level. Wildflowers peak on the south and southeast flanks, and the stable Pacific Northwest weather pattern keeps afternoon storm risk low. July is viable for hikers comfortable with snow travel; September works but water sources become less reliable and overnight temperatures drop sharply.

How difficult is the Loowit Trail?

The Loowit Trail is rated very difficult and is suitable only for experienced backpackers comfortable with off-trail navigation, rope-assisted scrambles, river fords, and long waterless carries. The 1,311 m total elevation gain across 45 km sounds moderate on paper, but the constant descent–ascent cycle through volcanic gullies — often 150–200 m at a time — accumulates fatigue well beyond what the raw numbers suggest. Strong fitness and wilderness navigation skills are genuinely required.

How many kilometres per day should I plan on the Loowit Trail?

Plan for 14–17 km per day over three days. Volcanic terrain, gully crossings, and route-finding make the Loowit significantly slower than a well-maintained trail of the same length. Most backpackers average 2.5–3.5 km per hour on the technical sections and budget full hiking days of 6–8 hours. Completing the loop in two days is possible for very fit hikers but leaves no margin for delays, weather, or injury.

Where do I sleep on the Loowit Trail?

The three main camping areas are: the North Fork Toutle River (~km 14 from June Lake), the Plains of Abraham (~km 25), and the south flank near June Lake. A mandatory 14.5 km no-camping zone covers the blast zone between the Toutle River and Windy Pass — you cannot camp anywhere in this section. All dispersed trail sites are free. Trailhead campgrounds charge approximately €10–13 per night.

Do I need a permit to hike the Loowit Trail?

No overnight backpacking permit is required for the Loowit Trail. A Northwest Forest Pass (~€4.60 daily or ~€27 annually) is required for all vehicles at the main trailheads. A free campfire permit is required if you plan to use an open fire — though a stove is strongly preferred in this fire-sensitive volcanic landscape. Check the Gifford Pinchot National Forest website for any seasonal closures or emergency restrictions before your departure date.