Tucked into the Coeur d'Alene Mountains and straddling the Montana-Idaho line, Blossom Lakes is the kind of hike that pays you back twice — once with a hard climb, then again with two shockingly clear mountain lakes at the top. The trail sits inside Lolo National Forest, and the payoff view of Upper and Lower Blossom Lakes from the ridgeline is the sort of thing people plan whole trips around.
The route itself is a 7.5-mile out-and-back starting at the Thompson Pass parking lot on the Idaho side. Expect roughly four hours on the trail and a serious workout: the path gains 1,387 feet, mostly via switchbacks that get steep in the final third. Around 75% of the way up, the trees open up and you get a bird's-eye view over both lakes — a spectacular moment, though hikers uneasy with heights should know it's coming. Once you're at the shoreline, felled trees and big boulders make natural picnic spots along the water's edge.
Feeling ambitious? Push another mile or so past the two lakes onto the Pear Lake Trail for a third, quieter alpine lake. And if one day isn't enough, primitive campsites sit on the shores of both Blossom Lakes, letting you wake up to the mirror-still water before the day crowd arrives.
Timing matters here. The trail is realistically a July-through-October proposition — heavy snow closes it off the rest of the year. In summer you'll walk through wildflowers (trillium, fairy bells, Solomon's Plume) with birdsong from over 300 local species for company; by early October the larches and undergrowth turn gold. Pack plenty of water despite the mild daytime temps, bring snacks, and check conditions before you go. One honest warning repeated across AllTrails reviews: the mosquitoes here have a reputation. Bring repellent and don't say you weren't told.
The nearest town is Murray, Idaho, a tiny historic spot under 20 minutes from the trailhead. If you want to turn this into a proper long weekend, the area delivers: the Route of the Hiawatha — a former rail line once called one of America's most scenic stretches of railroad — is now a celebrated biking and hiking trail nearby. About an hour away you'll find Wallace, an uncrowded mountain town with shops, dining and skiing, sitting in what's billed as America's richest silver mining district.
Who's this for? Fit day-hikers who want a genuinely rewarding destination without fighting crowds, backpackers after a low-key overnight, and anyone road-tripping the Idaho-Montana corridor who'd rather earn their lake swim than drive up to it. Just lace up waterproof boots — there are stream crossings — and give your legs fair warning about those switchbacks.
