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Hiking trails & Routes
United States
California
Modoc County

Summit Trail

Hard

2.7

(18)

84

hikers

Summit Trail

06:18

20.0km

830m

Hiking

Hike the difficult 12.4-mile Summit Trail in South Warner Wilderness, featuring 2708 feet of elevation gain and panoramic views.

Last updated: February 26, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

South Warner Wilderness

Modoc National Forest

Waypoints

A

Start point

Parking

Get Directions

1

74 m

Pepperdine Trailhead

Highlight • Trail

Summit Trail is a multi-day trek across the western slopes of the South Warner Mountains. The northern trailhead is located at Pepperdine Campground, on the edge of the South Warner …

Tip by

2

8.35 km

Cottonwood Lake

Highlight • Lake

Stop for a while at Cottonwood Lake to take in the peace and quiet of this remote mountain scenery.

Tip by

3

9.23 km

Patterson Lake

Highlight • Lake

Warren Peak rises out of the quarter-mile wide Patterson Lake. This lake makes an excellent turnaround point on a day hike, or a resting spot before the final push to the summit.

Tip by

4

9.95 km

Warren Peak

Highlight • Summit

Views in all directions can be appreciated from the Patterson Saddle. There is no official trail up the steep, loose slope to the peak, so use extreme caution if you plan to ascend.

Tip by

B

20.0 km

End point

Parking

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Way Types & Surfaces

Way Types

20.0 km

< 100 m

Surfaces

19.4 km

527 m

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Elevation

Elevation

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Weather

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Today

Tuesday 19 May

17°C

-1°C

0 %

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Max wind speed: 7.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

How long does it typically take to complete the Summit Trail?

This is a challenging hike, and most hikers should plan for approximately 6 to 7 hours to complete the entire 20 km route. This duration accounts for the significant elevation gain of over 800 meters and allows for breaks to enjoy the scenery.

What are the parking options for the Summit Trail?

The primary access point is the Pepperdine Trailhead. Parking availability can vary, especially on weekends, so it's advisable to arrive early to secure a spot. There are no shuttles mentioned for this specific trail.

Is this trail suitable for beginners?

No, the Summit Trail is rated as 'difficult' due to its length (nearly 20 km) and substantial elevation gain (over 800 meters). It features steep sections and rugged terrain, making it more appropriate for experienced hikers with good physical fitness.

What is the terrain like on the route?

The terrain is diverse and challenging. You can expect rocky ascents, forested paths in the lower sections, and exposed ridges as you gain elevation. Sections may involve careful footwork, and hiking poles are recommended for stability, especially on descents. You might also cross through meadows and near alpine lakes.

When is the best time of year to hike the Summit Trail?

The best time to hike is typically from late spring to early fall when the weather is most favorable and the trail is free of snow. Summer offers wildflowers and warmer temperatures, but be prepared for sun exposure on higher, open sections. Always check current weather conditions before heading out.

Are dogs allowed on the Summit Trail?

Yes, dogs are generally permitted on trails within the South Warner Wilderness. However, they must be kept on a leash at all times to protect wildlife and ensure a pleasant experience for all trail users. Please remember to pack out all pet waste.

Are there any permits or entrance fees required for the South Warner Wilderness?

While there are generally no entrance fees for the South Warner Wilderness itself, specific permits might be required for certain activities like overnight camping or campfires. It's always best to check the latest regulations with the local forest service office before your visit to ensure compliance.

What notable features or landmarks will I encounter along the way?

The trail offers several points of interest. You'll pass by the scenic Cottonwood Lake and Patterson Lake. The ultimate highlight is reaching Warren Peak, which provides panoramic views of the surrounding wilderness.

Does the trail connect with other hiking paths?

Yes, the route primarily follows the Summit Trail but also passes through sections of the Owl Creek Trail and the Upper Cottonwood Trail for a portion of its length.

What should I bring for a hike on this difficult trail?

Given its difficulty and length, essential gear includes plenty of water (there is no reliable water source on the trail), high-energy snacks, sturdy hiking boots, layers of clothing for changing weather, sun protection, a map and compass or GPS device, and a first-aid kit. Hiking poles are highly recommended for the steep and rocky sections.

What is the best strategy for tackling the significant elevation gain?

To manage the over 800 meters of elevation gain, a steady pace is crucial. Break up the ascent with short, regular breaks to conserve energy. Starting early in the day is also advisable, especially during warmer months, to avoid the midday sun and allow ample time to complete the hike before dark.

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