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Routes
Hiking trails & Routes
United States
California
Shasta County

South Lakes Loop (Echo, Upper/Lower Twin, Swan, Summit)

Routes
Hiking trails & Routes
United States
California
Shasta County

South Lakes Loop (Echo, Upper/Lower Twin, Swan, Summit)

Hard

2.7

(8)

85

hikers

South Lakes Loop (Echo, Upper/Lower Twin, Swan, Summit)

05:53

20.6km

430m

Hiking

The South Lakes Loop (Echo, Upper/Lower Twin, Swan, Summit) offers a diverse hiking experience through the stunning alpine landscape of the Eastern Sierra. You'll traverse varied terrain, from the clear waters of Lower Twin Lake to the more secluded Swan Lake, and pass unique features like the Grassy Swale boardwalk.…

Last updated: June 9, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Lassen Volcanic Wilderness

Lassen Volcanic National Park

Waypoints

A

Start point

Parking

Get Directions

1

721 m

Summit Lake

Highlight • Lake

Swimming is generally better from the north shore; the south shore is more grassy.
nps.gov/lavo/planyourvisit/summit-lake-campground.htm

Tip by

2

7.92 km

Lower Twin Lake

Highlight • Lake

The lake is still beautiful, but the trees are burned heavily around the shore.

Tip by

3

8.93 km

Swan Lake

Highlight • Lake

Most of the trees survived the fire of 2021. Enjoy the view from the PCT since there is no official side trail to the lake.

Tip by

4

9.33 km

South shore Swan Lake

Highlight • Lake

The PCT approaches Swan Lake first from the south, making the hiker curious to stray a bit off-trail to approach the amazingly blue water. A half mile further north along …

Tip by

5

13.2 km

Creek Crossing

Highlight • River

The creek is a great water source and even reliable in a dry year.

Tip by

6

14.4 km

Grassy Swale boardwalk

Highlight • Trail

The bridge survived the Dixie Fire of 2021 thanks to its humid surrounding. Enjoy the walk through the beautiful meadow.

Tip by

7

15.4 km

Kings Creek crossing

Highlight • River

The wide beautiful meadow of Kings Creek can be water-logged early after the snow melt and crossing the creek might require some acrobatics and detours via ad-hoc tree trunk bridges

Tip by

B

20.6 km

End point

Parking

Loading

Way Types & Surfaces

Way Types

19.4 km

1.03 km

208 m

Surfaces

19.4 km

1.03 km

208 m

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Elevation

Elevation

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

Highest point (2,170 m)

Lowest point (1,830 m)

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Weather

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Today

Saturday 11 July

26°C

9°C

0 %

Additional weather tips

Max wind speed: 21.0 km/h

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Frequently Asked Questions

Where can I park to access the South Lakes Loop?

For this loop, which includes lakes like Summit and Echo, you'll likely find parking at trailheads within Lassen Volcanic National Park. The Summit Lake Campground area often serves as a starting point for trails in this region, as does the Summit Lake Ranger Station mentioned in relation to Echo Lake trails. Always check the park's official website for current parking availability and regulations.

Is the South Lakes Loop dog-friendly?

No, dogs are generally not permitted on most hiking trails within Lassen Volcanic National Park, including this loop. They are typically allowed only in developed areas, paved roads, and campgrounds. Always check the latest park regulations before bringing your pet.

What is the best time of year to hike this loop?

The best time to hike the South Lakes Loop is typically from late spring through early fall (roughly June to October). During these months, the snow has usually melted, and the weather is most favorable for hiking. Always check current trail conditions, especially in early season, as snow can linger at higher elevations.

Are there any permits or fees required for this hike?

Yes, as this loop is located within Lassen Volcanic National Park, an entrance fee is required to access the park. If you plan an overnight backpacking trip, a wilderness permit is also necessary. Day hikers generally do not need a separate hiking permit beyond the park entrance fee. Check the official Lassen Volcanic National Park website for current fee schedules and permit requirements.

What kind of terrain can I expect on the South Lakes Loop?

This difficult hike covers varied terrain, including forested paths, potentially rocky sections, and areas around several lakes. You'll encounter ascents and descents, with a total elevation gain of approximately 427 meters. Expect natural surfaces, and be prepared for uneven ground.

What notable points of interest will I see along the route?

The loop takes you past several beautiful lakes and natural features. You'll encounter Summit Lake, Lower Twin Lake, and Swan Lake, including the South shore Swan Lake. Other highlights include a Creek Crossing, the Grassy Swale boardwalk, and the Kings Creek crossing.

Does the trail intersect with other well-known paths?

Yes, the South Lakes Loop intersects with several other trails. Significant portions of the route follow the Pacific Crest National Scenic Trail (PCT - California Section N). You'll also encounter sections of the Echo Lake/Twin Lakes Trail, Kings Creek Trail, Grassy Swale Trail, and the Summit Lake Trail.

Is the South Lakes Loop suitable for beginners or families with young children?

Given its 'difficult' rating, a distance of over 20 kilometers, and an elevation gain of approximately 427 meters, this loop is generally not recommended for beginners or families with young children. It requires a good level of fitness and hiking experience. There are easier trails available in Lassen Volcanic National Park for those seeking a less strenuous outing.

What should I bring for this hike?

For this difficult and lengthy hike, essential gear includes plenty of water, high-energy snacks, appropriate layers of clothing for changing weather, sun protection (hat, sunscreen), a map and compass or GPS device, a first-aid kit, and sturdy hiking boots. Trekking poles can also be beneficial for stability on varied terrain.

Are there any facilities or amenities near the trailhead?

As the trail is located within Lassen Volcanic National Park, amenities near the Summit Lake area may include campgrounds, restrooms, and potentially a ranger station during peak season. For more extensive services like cafes or stores, you would need to travel to nearby towns such as Chester, Mineral, or the Manzanita Lake area within the park.

Can I go wild swimming in any of the lakes along the route?

While the loop passes several beautiful lakes like Summit, Upper/Lower Twin, and Swan Lake, swimming regulations can vary. Echo Lake in Lassen Volcanic National Park is mentioned as a quiet spot for picnicking or swimming. Always check park regulations and signage at each lake to ensure swimming is permitted and safe before entering the water.

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