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Jennie Lake Trail

Boise County, Idaho

based on 9 reviews



8.38 miles

Elevation Gain

1998 ft

Route Type



Added by Garren Moore

Well behaved dogs can be off leash. There are existing fire pits at the lake (please use). Often, other backpackers will be around - beneficial if you're not ready to enter Idaho's expansive wilderness with just your own group/family. 9 miles roundtrip. Elevation Gain: 1950 feet.

Perhaps one of the best beginner-esque lake hikes closest to Boise, making your way to Jennie Lake can either be packed-in overnight or and out-and-back day hike. You'll be delighted by the secluded ambiance of the lake and the cool mountain breeze rushing through the pines.

Getting There:
Make your way to the Jennie Lake trailhead by heading north on Hwy 21 (from Boise) past Idaho City but before Lowman. About 10 to 15 miles after Idaho City you'll see signs for Whoop-Um-Up recreation area, which directly after you'll turn right onto 384 and then eventually take the fork left to 348. This road seems to be maintained and suitable for most sedans (...maybe not a Prius). After 7 miles after the fork, look for a sign that says "Jennie Lake trail". Searching Google Maps "Jennie Lake Trailhead" will navigate you via exact directions to the trailhead, which is a quaint 5-6 car gravel parking.

From there, the trail is quite obvious, starting at ~5,900 ft and ascending essentially the entire way to the lake. Plan 3 to 4 hours for the ascent along a well marked, dirt and gravel trail (about 4 1/2 miles). You'll see wildflowers, pine, deer, a mint field, and a small river.

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Dog Friendly
Easy Parking
Family Friendly


Was a beautiful hike, wish the weather had been better though. Went Mid-September and it snowed the whole time. Definitely a fun day hike or backpacking trip. More Intermediate then Beginner

Beautiful wildflowers, Trail was great. Didn’t see any animals because we hiked in the middle of the day. I don’t consider this an easy hike. We did it as a day hike and I was exhausted by the time I got to the lake. Maybe if you hike a lot, this would be no big deal. But we did this based on the reviews that we read, and I don’t get to hike very often. Really loved the scenery but will not do it again at my age and skill level.

Me and my brother hiked in there on a Friday night. It was a beautiful hike! We both enjoyed it. The lake is pretty, but wasn’t one to swim in because the lake floor was nasty. And the fish didn’t bite at all! Ha but it was still really pretty and I bet if we would have climbed wolf peak it would have been a better trip

So we decided to hike up to Jennie Lake end of October! The hike is def for beginners, not rough at all just a bit long (but I think it seemed that way cause we had such heavy packs). We made it in 3 hours up (with 2 breaks) and 1.5 hours back down. Going up is pretty gradual although most your steeper little hills are at the beginning of the trail. Flattens out the rest of the way till the last bit up to the lake, which again still wasn’t very steep. The last 30 minutes had 6 inches of snow, trail was still easy to route. And the lake had decent snow around it. The hardest part was it was freezing at night (we camped out) and all the wood was very wet which made the fire super hard to keep going, but we managed! Road up was well maintained and could def be done in a sedan! Parking lot was small but worked! We were the only ones there. Lake is smaller than I expected, but def saw TONS of fish jumping, for all you fishermen! Would def go again in the summer! Bonus: saw a super cute black bear cub on our way down. Obviously didn’t stop to take pics cause didn’t know where mama was, but was still a super cute surprise!

It was so peaceful out here. I took my 2 dogs and they loved it. The view was beautiful especially with this time of year and the leaves being all sorts of colors. We went 2 hours before that sun set and still got a pretty good hike. Although the way back is pretty much all up hill so prepare to get tired.

Went on an overnight backpacking trip in early June- was a little too early. There was still several feet of snow at the lake. Beautiful hike though!

I hiked out here and camped about 3 weeks ago. The hike and lake were very pretty and offered many different types of terrain and foliage. The lake was about 2/3 frozen still, and the trail had a few snow patches. It is very worth it to spend the night up there, but bring bug spray! No mosquitoes in late June, but definitely other pesky insects. The trail gets a little hard to follow near the top but by then you'll have a good idea of where the lake is. Loved this hike and it has a good distance/payoff ratio!

My dad & I ventured this one out with 30lb packs at the end of last October. There was about 6inches of snow around the start of the hike and over a foot until we hit our camp spot. Definitely a harder hike when you add packs and snow in. We hit the lake in the morning for fishing, and the view was gorgeous! Worth it.

I would highly recommend visiting Jennie Lake. A friend camped at the trailhead on a Friday night day hiked the trail the next morning, at the end of September 2015. The lake itself was great, tucked in to some beautiful scenery with granite walls and high mountain vegetation. While at the lake I did a little catch and release fly fishing. Using cinnimon ants, I caught two surprisingly large 14" Cutthroats. The trail follows Bear Creek which offers some shade in the morning hours as well as photo-ops and water for the dogs (if you bring them along). We did run into some hikers on the way out and I think the trail is more popular than I initally thought, due to the abundance of camp sites at the lake itself. The trail is closer to 5 miles one way and has about 2,700' of accumulated elevation gain, most of which is headed to the lake. I used my Garmin to track the journey and you can see the data here: https://connect.garmin.com/modern/activity/911581475

Leave No Trace

Always practice Leave No Trace ethics on your adventures and follow local regulations. Please explore responsibly!


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