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Hiking trails & Routes
Nevada County

Summit Lake, Frog Lake Overlook, and Basin Peak via PCT Loop

Routes
Hiking trails & Routes
Nevada County

Summit Lake, Frog Lake Overlook, and Basin Peak via PCT Loop

Hard

7

hikers

Summit Lake, Frog Lake Overlook, and Basin Peak via PCT Loop

07:55

25.6km

900m

Hiking

Hike a difficult 15.9-mile loop in Tahoe National Forest, featuring the Frog Lake Overlook, Basin Peak, and sections of the PCT.

Last updated: February 26, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Waypoints

A

Start point

Parking

Get Directions

1

1.40 km

I80 tunnels

Highlight • Structure

To cross the Interstate 80 you will have to walk through two tricky tunnels that might be flooded and filled with some slippery boulders. So be careful!

Tip by

2

3.78 km

Summit Lake

Highlight • Lake

A beautiful lake near the Donner Lake Rim Trail.

Tip by

6.90 km

Frog Lake Overlook

Viewpoint

4

14.2 km

Basin Peak

Highlight • Summit

Basin Peak sits in the northern portion of the Sierra Nevada range at an elevation of 9,103 feet. It is down the ridge from Castle Peak, but sees significantly less traffic.

Tip by

5

17.2 km

Castle Peak Trail

Highlight • Trail

Castle Peak Trail is a short branch off the Pacific Crest Trail that leads straight to the summit of Castle Peak.

Tip by

6

18.0 km

Castle Pass

Highlight • Mountain Pass

At Castle Pass there is at least one nice campsite if you don’t want to go the extra mile to the Peter Grubb Hut.

Tip by

B

25.6 km

End point

Parking

Loading

Way Types & Surfaces

Way Types

21.0 km

2.91 km

811 m

667 m

192 m

Surfaces

12.0 km

11.8 km

914 m

548 m

298 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 (2,720 m)

Lowest point (2,190 m)

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Weather

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Today

Wednesday 20 May

16°C

2°C

0 %

Additional weather tips

Max wind speed: 14.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

Where does the trail start and where can I park?

You can typically access this loop from parking areas off the Boreal exit from Highway 80, or from the Donner Summit Rest Area. Parking can fill up quickly, especially on weekends, so arriving early is advisable.

What is the terrain like on this loop?

The terrain is quite varied and challenging. You'll encounter everything from well-maintained paths to rougher sections with numerous high steps. Expect to traverse through mixed conifer forests, past granite outcrops, and up rocky gullies. As you ascend towards the Frog Lake Overlook and Basin Peak, the trail breaks out above the treeline onto an open, rocky ridge. Some parts are notably rocky, so sturdy footwear is essential.

What can I see along the route?

This loop offers spectacular views and several notable features. You'll pass through the I80 tunnels, visit Summit Lake, and reach the dramatic Frog Lake Overlook, which provides a bird's-eye view of Frog Lake. The route also takes you to Basin Peak and through Castle Pass, offering extensive vistas of the Sierra Nevada, including Donner Summit and Castle Peak.

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

The best time to hike this loop is typically from late spring to early fall. In spring and early summer, you'll find abundant wildflowers, particularly Mule's Ear. Fall brings brilliant colors from aspens, cottonwoods, and maple trees. Always check weather conditions before heading out, as snow can linger into early summer and return in late fall.

Is this trail dog-friendly?

Yes, this trail is generally dog-friendly. However, as it's located within Tahoe National Forest, it's crucial to keep your dog on a leash to protect wildlife and ensure a pleasant experience for all hikers. Be sure to pack enough water for your canine companion, especially on warmer days, as water sources can be limited.

Do I need a permit or pay an entrance fee for this area?

No, you typically do not need a permit for day hiking this loop within Tahoe National Forest, nor are there entrance fees. However, always check the latest regulations with the Tahoe National Forest service before your trip, especially if planning an overnight stay or during peak fire season.

What makes this loop challenging?

This loop is considered difficult due to significant elevation changes, covering approximately 3,000 feet of gain and loss, and varied terrain. The ascent to the Frog Lake Overlook alone involves a substantial uphill climb, and incorporating Basin Peak adds to the strenuous nature. Some sections are steep and rocky, requiring good physical conditioning.

Does the trail intersect with other well-known paths?

Yes, a significant portion of this route utilizes or connects with the iconic Pacific Crest Trail (PCT) – California Section L. You'll also find sections that overlap with the Warren Lake Trail, the Pacific Crest National Scenic Trail #2000, the Donner Lake Rim Trail, and a small part of the Hole in the Ground trail.

What kind of wildlife or plants might I encounter?

The area is rich in biodiversity. You might spot various wildlife, as it's vital for species like black bears and the Loyalton-Truckee deer herd. The forests feature mixed conifers, aspens, and open slopes with mountain mahogany, wax currant, and wild gooseberry. In spring and early summer, the trail is vibrant with wildflowers.

What should I pack for this hike?

Given the trail's difficulty and varied terrain, we highly recommend bringing plenty of water, snacks, sun protection, and layers of clothing as weather can change quickly at higher elevations. Hiking poles are strongly advised, especially for the steep and rocky sections, to aid with stability and reduce strain on your knees.

How long does it typically take to complete this loop?

This is a long and challenging hike, covering over 25 kilometers (15.5 miles) with significant elevation gain. Most hikers should plan for a full day on the trail, typically around 8-10 hours, depending on your pace, fitness level, and how much time you spend enjoying the viewpoints.

Nearby routes

Moderate

23

Castle Peak and Basin Peak via Castle Valley Road and PCT

04:07h

12.3km

660m

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