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Routes
Hiking trails & Routes
United States
California
Siskiyou County

Mount Shasta via Avalanche Gulch Route

Hard

3.4

(28)

90

hikers

Mount Shasta via Avalanche Gulch Route

03:51

5.86km

1,060m

Hiking

Embark on the challenging Mount Shasta via Avalanche Gulch Route, a difficult hike that promises a true mountaineering experience. You will begin your ascent through sparse forest, gradually transitioning as the landscape opens up. The trail leads you to Horse Camp, a significant landmark featuring a historic stone lodge, before continuing upwards onto expansive, glaciated slopes. This demanding route covers 3.6 miles (5.9 km) and involves a substantial elevation gain of 3467 feet (1057 metres). Plan for a duration of approximately 3 hours and 50 minutes to complete this strenuous journey.

When planning your visit, be aware that this route is best attempted during late spring or early summer when snow conditions are more stable, though ice axes and crampons are often still necessary. Always check current weather forecasts and avalanche conditions before heading out, as mountain weather can change rapidly. Access to the trailhead typically involves driving, and you should confirm parking availability and any potential fees or permit requirements for the area. Starting early in the day is crucial to allow ample time for the ascent and descent, especially given the route's difficulty and exposure.

Mount Shasta is a prominent stratovolcano and a significant landmark in Northern California, known for its spiritual importance and unique geological features. The Avalanche Gulch route is one of the most popular ways to reach its summit, offering a classic high-altitude climbing experience. This area is part of the Shasta-Trinity National Forest, home to diverse ecosystems and wildlife, making it a remarkable natural environment to explore. The mountain's glaciated slopes and alpine environment provide a stark contrast to the lower forested sections, showcasing the region's dramatic ecological transitions.

Last updated: April 23, 2026

Tips

Includes a segment that may be dangerous

A part of this route comprises technical, difficult, or hazardous terrain. Specialist equipment and prior experience may be required.

After 3.54 km for 2.05 km

Waypoints

A

Bunny Flat Trailhead

Highlight • Trail

While this is the ultimate gateway to Mount Shasta's winter activities, it is also widely used in the summer since it serves as a starting point for five of the nine hiking trails on Mount Shasta. It provides access to Horse Camp, Hidden Valley, and Green Butte Ridge.

Tip by

1

3.04 km

Olberman's Causeway is a path built over many years by the guard living at the Sierra Club's Horse Camp Hut; it leads up Avalanche Gulch to the standard route to climb Mt Shasta.
It is typically not visible under the snow in spring/early summer when it is safer to climb as long as snow holds the loose rocks in place that pose a severe rock fall danger (helmets are essential here). Most people camp around 10000 feet at Lake Helen on Day 1 and summit the next morning.
For a winter route climbing from Horse Camp via Casaval Ridge and descending via Avalanche Gulch see: komoot.de/tour/9090975

Tip by

2

3.55 km

Avalanche Gulch is the standard route to climb Mt Shasta, typically done in spring/early summer as long as snow holds the loose rocks in place that pose a severe rock fall danger (helmets are essential here). Most people camp around 10000 feet at Lake Helen on Day 1 and summit the next morning.
For a winter route climbing from Horse Camp via Casaval Ridge and descending via Avalanche Gulch see: komoot.com/tour/9090975

Tip by

3

4.30 km

50 / 50 Flat

Highlight • Natural

This almost flat area is about half-way up the slope to Helen Lake. Some hikers prefer to camp here rather than at Helen Lake if it's busy or very cold. It makes the summit day a little longer, but it reduces the distance hiking uphill with a heavy load.

Tip by

4

5.65 km

Preferred snow camp site for ascents on Avalanche Gulch

Tip by

B

5.86 km

End point

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Way Types & Surfaces

Way Types

2.71 km

2.05 km

1.10 km

Surfaces

4.68 km

811 m

345 m

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

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Weather

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Saturday 9 May

21°C

3°C

-- %

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This route was planned by komoot.

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Frequently Asked Questions

Is the Mount Shasta via Avalanche Gulch Route suitable for beginners?

No, this route is considered extremely challenging and is not suitable for beginners without significant preparation. It's rated as "Strenuous," "Hard," or "Expert" and requires excellent physical fitness, mental fortitude, and often winter mountaineering skills. Novices are strongly recommended to go with a guide.

What is the terrain like on the Avalanche Gulch Route?

The terrain varies significantly. It begins with a gradual incline through a sparse forest from the Bunny Flat Trailhead to Horse Camp, often along Olberman's Causeway. Beyond Horse Camp, it becomes rugged, transitioning to a "lunar landscape of volcanic scree" when snow has melted. Early in the season (May to mid-July), it's predominantly snow and ice-covered, especially through Avalanche Gulch, which includes the steep section known as "The Heart." Higher up, you'll encounter the Red Banks and the long, exposed "Misery Hill" before the final summit approach.

When is the best time of year to climb Mount Shasta via Avalanche Gulch?

The generally recommended time for climbing this route is early in the season, typically from May to mid-July. During this period, the trail is predominantly snow and ice-covered, which can make for more efficient travel with appropriate gear. Later in the season, the snow melts, turning sections into a difficult slog through loose scree and increasing the risk of rockfall.

Do I need a permit to climb Mount Shasta via Avalanche Gulch?

Yes, a wilderness and summit permit is required for all trips above 10,000 feet on Mount Shasta. Additionally, climbers must pack out all human waste using wag bags, which are typically available at the trailhead. These regulations are in place to protect the fragile alpine environment.

Where does the Avalanche Gulch Route start, and is there parking available?

The route typically begins at the Bunny Flat Trailhead. There is parking available at this trailhead, which is a common starting point for many Mount Shasta climbs.

Is the Mount Shasta via Avalanche Gulch Route dog-friendly?

No, dogs are generally not allowed on the upper sections of this route, particularly on the Horse Camp Trail (Sisson's Trail), which is part of the initial ascent. It's best to leave your canine companions at home for this challenging climb.

What are the key landmarks or points of interest along the route?

Notable landmarks include the Bunny Flat Trailhead, the historic Horse Camp (around 7,800-7,900 ft) with a reliable water source, Helen Lake (a common base camp at 10,400 ft), the steep section known as "The Heart" within Avalanche Gulch, the prominent Red Banks (12,800 ft), and the challenging "Misery Hill" before reaching the summit.

Is there water available on the trail?

Yes, there is a reliable water source at Horse Camp, which is the first notable landmark on the route (around 7,800-7,900 ft). Beyond this point, water sources become scarce, especially as you ascend into the alpine environment. It's crucial to carry sufficient water or have a plan for melting snow.

Can I complete the climb in one day, or is an overnight stay recommended?

While some highly experienced climbers attempt it in a single day, most people tackle this route over two days. An overnight camp at Helen Lake (around 10,400 ft) is a common strategy. An early start on summit day is essential to avoid softening snow and potential rockfall as the day progresses.

What essential skills and gear are needed for this climb?

This climb requires significant preparation. Essential skills include winter mountaineering techniques, such as the ability to use an ice axe for self-arrest and crampons for traction on snow and ice, particularly from Helen Lake to the Red Banks. Avalanche awareness is also crucial. Appropriate gear includes mountaineering boots, warm layers, sun protection, a helmet, and navigation tools.

Does the Avalanche Gulch Route intersect with other trails?

Yes, the route utilizes sections of several paths. It begins on the Horse Camp Trail (Sisson's Trail) and follows parts of the Avalanche Gulch Climbing Route. You'll also traverse sections known as Olberman's Causeway, which is part of the Avalanche Gulch Climbing Route.

Are there any specific regulations or fees for Shasta-Trinity National Forest?

While there isn't a general entrance fee for Shasta-Trinity National Forest, specific activities or areas, like climbing Mount Shasta above 10,000 feet, do require permits as mentioned previously. Always check the official forest service website for the latest regulations regarding camping, campfires, and other activities to ensure compliance.

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Mount Shasta via Avalanche Gulch Route

03:51h

5.86km

1,060m

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