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Routes
Hiking trails & Routes
United States
Idaho
Custer County
Sawtooth National Recreation Area

Redfish Lake to Alpine Lake

Moderate

3.1

(3)

71

hikers

Redfish Lake to Alpine Lake

03:12

8.80km

550m

Hiking

Hike 5.5 miles (8.8 km) to Alpine Lake in the Sawtooth Wilderness, gaining 1812 feet (552 metres) on this moderate trail.

Last updated: February 26, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Waypoints

A

Start point

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1

0 m

Redfish Lake ferry dock and campground

Highlight • Lake

Redfish Lake is one of the most popular spots at the boundary of the Sawtooth Wilderness. It offers facilities for hiking, camping, mountain biking (bike rentals available) and water sports. …

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2

8.64 km

Alpine Lake

Highlight • Lake

This beautiful lake is one of two lakes known as Alpine Lake within the Sawtooth Wilderness with the other one further north next to popular Sawtooth Lake. Right here, you …

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B

8.80 km

End point

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Way Types & Surfaces

Way Types

5.86 km

2.94 km

Surfaces

8.80 km

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Elevation

Elevation

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Weather

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Today

Tuesday 19 May

9°C

-5°C

12 %

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Max wind speed: 12.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

What is the difficulty level of the hike to Alpine Lake?

The trail is generally rated as moderate to strenuous. While the initial section from the boat dock to Flatrock Junction has a more gradual incline, the path after Flatrock Junction involves a rapid and sustained climb with numerous switchbacks, requiring significant effort.

How do I get to the trailhead for the Redfish Lake to Alpine Lake hike?

Most hikers opt to take a scenic boat shuttle across Redfish Lake from the main dock to the Inlet Campground. This bypasses several miles of lakeside walking and gets you directly to the wilderness section of the trail.

Are permits required for hiking in the Sawtooth Wilderness?

Yes, you will need a self-administered wilderness permit. These are typically available at the trailhead, emphasizing the pristine and protected nature of the environment you'll be entering.

When is the best time of year to hike to Alpine Lake?

The ideal time for this hike is typically from July through September. During these months, the weather is most favorable, insect activity is generally lower, and you might even catch the beginning of fall colors.

What kind of terrain can I expect on the trail?

The trail follows Redfish Creek through thick conifer forests and past boulder fields. As you gain elevation, you'll encounter spectacular U-shaped canyons and numerous switchbacks. Near Alpine Lake, the shoreline is often lined with vibrant huckleberry bushes.

Is the Redfish Lake to Alpine Lake trail dog-friendly?

Dogs are generally allowed in the Sawtooth Wilderness, but it's always best to check current regulations regarding leash requirements and waste disposal to ensure you're adhering to wilderness ethics and protecting the natural environment.

What are the main attractions or viewpoints along the route?

The primary draw is the breathtaking scenery of the Sawtooth Wilderness, with its jagged peaks and pristine alpine lakes. You'll enjoy consistently impressive views of the towering Sawtooth peaks, especially as you ascend towards Alpine Lake, which many describe as even more scenic than photos suggest.

Does this trail connect with other hiking paths?

Yes, the route primarily follows the Redfish Creek - Baron Creek Trail for much of its length. It also briefly intersects with the Redfish Inlet Trail near the beginning.

What should I bring for this hike?

Given the moderate to strenuous difficulty and significant elevation gain, bring plenty of water, snacks, sturdy hiking boots, and layers of clothing. Sun protection, a map, and navigation tools are also highly recommended for a wilderness experience.

Are there any facilities or amenities near the trailhead?

The Redfish Lake area, where the boat shuttle departs, offers amenities such as a ferry dock and campground. However, once you take the shuttle and enter the wilderness, there are no facilities, so plan accordingly.

Is the trail suitable for families with children?

The initial, more gradual section from the boat dock to Flatrock Junction might be suitable for families. However, the sustained and steep climb to Alpine Lake is quite challenging and might be too strenuous for younger children or those not accustomed to significant elevation gain.

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