30 – Trinity Lookout
Trinity Mountain, standing at 9,451 feet, is the highest peak in Idaho’s Boise Mountains and is home to the historic Trinity Mountain Lookout. Established in 1922, the original 12×12-foot stone cabin with an iron roof was replaced in 1956 by the current structure, featuring a 10-foot concrete base topped with a live-in cab. The lookout remains active during fire seasons, offering panoramic views of the surrounding subalpine lakes and rugged terrain.
Visitors can access the summit via a rough road suitable for motorcycles and ATVs, though many choose to hike the scenic 2-mile trail that ascends 1,400 feet from the base. The area is rich in recreational opportunities, including camping at nearby Big Trinity Lake Campground, fishing in the pristine alpine lakes, and exploring numerous hiking trails. The summit provides breathtaking vistas of the Boise National Forest, making it a popular destination for outdoor enthusiasts seeking both adventure and tranquility.
More Information
The coordinates are for the gate below. Going to the lookout is optional, but proceeding bumps up to a level 4.
Coordinates: 43.613502, -115.437865
Elevation: 8435 ft
Difficulty: 3
What to Expect: No info
[reblex id=’779′]
Check In
Use the form below to check in. Check-ins must include a photo of you or your bike at the challenge site with the 2025 bandanna. All participants must be registered IAMC Challenge Members. Leave a description of your ride and share road conditions — snow, water, obstacles, and tips for future riders are all appreciated.
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10 Check-Ins
Came in from the North, it started to get just a bit muddy towards the top and where the turn is for the lookout there was some snow so I didn't even attempt to stop there.
Made a day ride with my dad. He's not comfortable offroad on a bike so we took wheelers. Doesn't really count but still checked it out and had a great time. Rained on us nearly the whole time. Looks like one of you was already here
Although I continued past the gate for a ways, I didn't go all the way up to the Lookout. They've been working on the road with heavy equipment creating more loose rock, sand, and holes. It's a difficult climb anyway but this made it worse. Trinity Road south had plenty of rain washes as did road 159 to Prairie.
I've been to Trinity Lakes from Featherville a few times. This was my first time to the lookout. I looped back down to Pine. I would rate the two mile section from the gate up to the lookout a 4. The rest was a mix of 2 and 3. Clouds and smoke limited the view.
I went in from Anderson Dam and took Trinity Ridge Road, which would be challenging on a big bike. Started to rain at the top and was a bit windy, so snapped the pic and bolted.
A solid “2”, until you hit that last gate. A solid 4, from there to the top. What a great way to close out the event, for me. Was able to explore many new areas, and a little saddle sore, at times. Great event!
Love to ride to this lookout. Awesome views.
Came in from the North, it started to get just a bit muddy towards the top and where the turn is for the lookout there was some snow so I didn’t even attempt to stop there.
Made a day ride with my dad. He’s not comfortable offroad on a bike so we took wheelers. Doesn’t really count but still checked it out and had a great time. Rained on us nearly the whole time. Looks like one of you was already here
Although I continued past the gate for a ways, I didn’t go all the way up to the Lookout. They’ve been working on the road with heavy equipment creating more loose rock, sand, and holes. It’s a difficult climb anyway but this made it worse. Trinity Road south had plenty of rain washes as did road 159 to Prairie.
I’ve been to Trinity Lakes from Featherville a few times. This was my first time to the lookout. I looped back down to Pine. I would rate the two mile section from the gate up to the lookout a 4. The rest was a mix of 2 and 3. Clouds and smoke limited the view.
Coming in from the South West I would give the road a level 3.
I went in from Anderson Dam and took Trinity Ridge Road, which would be challenging on a big bike. Started to rain at the top and was a bit windy, so snapped the pic and bolted.
Came up west side. Lots of rocks.
Didn’t go past the gate. It would have been a 4 if I did.
A solid “2”, until you hit that last gate. A solid 4, from there to the top. What a great way to close out the event, for me. Was able to explore many new areas, and a little saddle sore, at times. Great event!
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