4.8
(3275)
13,521
hikers
Pass Lake Trail
03:40
11.1km
560m
Hiking
Embark on the Pass Lake Trail, a moderate hike that takes you deep into the rugged Lost River Range within the Salmon-Challis National Forest. This route covers 6.9 miles (11.1 km) and involves a steady climb of 1822 feet (555 metres) as you follow a singletrack path. The journey culminates at the serene Pass Lake, offering a rewarding destination after approximately 3 hours and 40 minutes of hiking. As you ascend, the trail gradually steepens, building anticipation for the views and natural beauty awaiting you at the lake.
Planning your visit is straightforward, as parking is available directly at the West Fork Upper Pahsimeroi Trailhead. This trail is known for being less crowded, so you can often enjoy a quieter experience with lighter foot traffic. If you like to bring your furry friend along, you'll be pleased to know that the Pass Lake Trail is dog friendly, making it a great option for you and your canine companion. Consider starting early to make the most of your time on the path.
The area around Pass Lake is a haven for nature enthusiasts, providing excellent opportunities for birding and spotting local wildlife. Keep an eye out for various species that call this high-mountain environment home. During the autumn months, the landscape transforms with vibrant fall colors, adding another layer of beauty to your hike. The diverse flora along the trail also makes it a great spot to observe wildflowers, especially when they are in bloom.
Last updated: April 23, 2026
Tips
Your route passes through a protected area
Please check local regulations for:
Salmon-Challis National Forest
Waypoints
Start point
Parking
Get Directions
8 m
West Fork Upper Pahsimeroi Trailhead
Highlight • Parking
Tip by
5.50 km
Pass Lake
Highlight • Lake
Tip by
11.1 km
End point
Parking
Way Types & Surfaces
Way Types
11.0 km
< 100 m
Surfaces
11.0 km
< 100 m
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Elevation
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Weather
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Today
Tuesday 11 August
26°C
9°C
0 %
Additional weather tips
Max wind speed: 14.0 km/h
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This route was planned by komoot.
Frequently Asked Questions
Where does the Pass Lake Trail start and is there parking available?
The trail officially begins at the West Fork Upper Pahsimeroi Trailhead. This is also where you'll find parking for the route.
What is the overall difficulty of this hike?
This route is rated as moderate. While the overall 11 km distance and 555 meters of elevation gain contribute to its moderate rating, be aware that some sections can become steeper as you progress, offering a rewarding challenge.
Is the Pass Lake Trail dog-friendly?
Yes, this trail is dog-friendly, making it a great option for hiking with your canine companion. Please ensure your dog is kept on a leash and that you practice Leave No Trace principles.
What is the best time of year to hike this route?
The best time to hike this trail is typically during the summer and fall months. Fall offers beautiful colors, while summer provides pleasant conditions for enjoying the lake and surrounding scenery. Early spring might still have snowpack, making some sections more challenging.
Do I need a permit or is there an entrance fee for this area?
This trail is located within the Salmon-Challis National Forest. Generally, there are no entrance fees for day use in National Forests, and permits are not typically required for day hiking. However, it's always a good idea to check the official Salmon-Challis National Forest website for any current regulations or specific permit requirements, especially if planning an overnight trip.
What kind of terrain can I expect on the trail?
The route primarily follows a singletrack path through the Lost River Range. You can expect varied terrain, with sections that become steeper as you gain elevation. The trail leads to Pass Lake, offering a mix of forest and open views.
What wildlife or natural features might I encounter?
The area is known for its opportunities for birding, and you might spot various wildlife. In season, wildflowers add vibrant color to the landscape. The highlight of the route is reaching Pass Lake itself, a serene alpine lake.
Is this a loop trail or an out-and-back?
The Komoot tour for Pass Lake Trail is an out-and-back route. You will hike to Pass Lake and return along the same path.
Does the trail intersect other well-known paths?
Yes, while the primary route is the Pass Lake Trail, sections of this Komoot tour also briefly follow parts of the Leatherman Peak Trail and the Merriam Lake Trail.
What should I bring for this hike?
Given the moderate difficulty and varied terrain, it's recommended to bring plenty of water, snacks, appropriate hiking footwear, layers of clothing for changing weather, sun protection, and a map or GPS device. Don't forget your camera for the scenic views!
Are there opportunities for fishing at Pass Lake?
Yes, Pass Lake is noted for offering fishing opportunities. If you plan to fish, ensure you have the appropriate Idaho fishing license and are aware of any local regulations.
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