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Hiking trails & Routes
United States
California
Mono County

Twenty Lakes Basin Loop

Moderate

3.4

(10)

70

hikers

Twenty Lakes Basin Loop

02:58

10.7km

190m

Hiking

Hike the moderate 6.7-mile Twenty Lakes Basin Loop in Inyo National Forest for stunning alpine lakes and dramatic Sierra Nevada peak views.

Last updated: February 26, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Waypoints

A

Saddlebag Lake Campground

Highlight • Rest Area

20 campsites and 1 large group site at Saddlebag Lake at an elevation of 10,000 feet. This is Bear Country, bear boxes are provided. Reservations are only available for the …

Tip by

1

91 m

Saddlebag Lake Resort

Highlight • Lake

Saddlebag Lake Resort offers no accomodation, but a campsite that operates on a first come, first serve-basis. You will find a General Store, Café, boat renting and a water taxi. …

Tip by

2

2.94 km

Greenstone Lake

Highlight • Lake

Cystal clear alpine lake in the 20-Lakes-Basin with some fish and just a quarter mile from the water taxi to Saddlebag Lake Resort.

Tip by

3

5.60 km

Steelhead Lake

Highlight • Lake

Pretty large alpine lake in the 20-Lakes-Basin. If you bring a fishing rod, you might catch some trout.

Tip by

4

5.94 km

Excelsior Lake

Highlight • Lake

Small alpine lake in the 20-Lakes-Basin. Best time to visit between April and October, depending on snow level.

Tip by

5

6.54 km

Shamrock Lake

Highlight • Lake

Stunning blue alpine lake in 20-Lakes Basin with several small islands.

Tip by

6

7.55 km

Lake Helen

Highlight • Lake

Beautiful alpine lake at 9.900 feet at the northern end of 20-Lakes Basin, where the trail down Lundy Canyon branches off.

Tip by

7

10.1 km

Saddlebag Lake

Highlight • Lake

Large blue alpine lake in the 20-Lakes-Basin. The Saddlebag Lake Resort offers regular trips from the General Store with boat taxi to the back of the lake. You can also rent boats for fishing.

Tip by

B

10.7 km

End point

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Way Types & Surfaces

Way Types

10.5 km

125 m

< 100 m

Surfaces

10.5 km

152 m

< 100 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 (3,160 m)

Lowest point (3,070 m)

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Weather

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Today

Sunday 10 May

19°C

3°C

0 %

Additional weather tips

Max wind speed: 15.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

Where does the Twenty Lakes Basin Loop trail start, and what are the parking options?

The trail typically starts from the parking area at the end of Saddlebag Lake Road, near the Saddlebag Lake Campground and Saddlebag Lake Resort. Parking is available there, but it can fill up quickly, especially during peak season. Arriving early is recommended.

Is there a way to shorten the Twenty Lakes Basin Loop?

Yes, a significant feature of this loop is the water taxi on Saddlebag Lake. This shuttle allows hikers to cut out approximately 1.5 miles of hiking on either end of the loop, making it more accessible or allowing more time to explore the basin itself.

What is the terrain like on the Twenty Lakes Basin Loop?

The terrain is typical high-alpine, featuring rolling hills, rocky sections, and high-elevation meadows. You'll traverse over granite and through sparsely vegetated forests. Some parts, particularly around Lake Helen, can be quite rocky, requiring careful footing. Depending on the season, you might encounter lingering snow patches, even into late summer.

How challenging is the Twenty Lakes Basin Loop, considering the high altitude?

While the trail is generally rated as easy to moderate with minimal elevation gain, the high altitude (starting above 10,000 feet, with the highest point around 10,364 feet) can make even slight inclines feel more strenuous. It's important to be acclimatized and prepared for rapid weather changes.

What kind of scenery and landmarks can I expect to see along the route?

The loop is celebrated for its continuously stunning scenery. You'll be treated to numerous crystal-clear alpine lakes like Greenstone Lake, Steelhead Lake, Excelsior Lake, Shamrock Lake, and Lake Helen, nestled against dramatic granite peaks like Mount Conness and North Peak. Expect picturesque meadows, colorful crags, and lovely waterfalls.

What is the best time of year to hike the Twenty Lakes Basin Loop?

The best time to hike is typically from late June or early July through September or early October, once most of the snow has melted. Always check current trail conditions, as lingering snow can make sections tricky even in late summer. The weather in this mountainous region can change rapidly, so be prepared for fluctuations.

Is the Twenty Lakes Basin Loop dog-friendly?

Yes, dogs are generally allowed on the Twenty Lakes Basin Loop trail. However, they must be kept on a leash at all times to protect wildlife and ensure a pleasant experience for all hikers. Always pack out any waste.

Do I need a permit or pay an entrance fee for the Twenty Lakes Basin Loop?

The Twenty Lakes Basin Loop is located within the Hoover Wilderness, part of the Inyo National Forest. While there is no entrance fee for the Inyo National Forest itself, wilderness permits are required for overnight stays. Day hikers typically do not need a permit, but it's always wise to check the latest regulations with the Inyo National Forest service before your trip.

Does the trail intersect other well-known paths?

Yes, the route also passes through sections of the Lakes Basin Loop Trail and the Saddlebag Lake Loop Trail.

Which direction is best to hike the loop?

Many hikers recommend completing the loop in the counter-clockwise direction. This approach often provides better, more continuous views of the prominent mountain scenery as you progress through the basin.

What should I bring for a day hike on this loop?

Given the high altitude and variable alpine weather, essential items include plenty of water, sun protection (hat, sunscreen, sunglasses), layers of clothing, sturdy hiking boots, and snacks. A map and compass or GPS device are also recommended, especially if you plan to explore off the main path.

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