South Lakes Loop (Echo, Upper/Lower Twin, Swan, Summit)
South Lakes Loop (Echo, Upper/Lower Twin, Swan, Summit)
2.7
(8)
85
hikers
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
Waypoints
Start point
Parking
Get Directions
721 m
Highlight • Lake
Tip by
7.92 km
Highlight • Lake
Tip by
8.93 km
Highlight • Lake
Tip by
9.33 km
Highlight • Lake
Tip by
13.2 km
Highlight • River
Tip by
14.4 km
Highlight • Trail
Tip by
15.4 km
Highlight • River
Tip by
20.6 km
End point
Parking
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
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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This route was planned by komoot.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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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