The access road to the trailhead might be the most arduous thing about a trip to Hidden Lake in the Idaho Panhandle north of Bonners Ferry. Even with an SUV, it may be necessary to add a little extra mileage to the hike due to a rocky last few miles on the rough Forest Service road. Once on trail, however, it’s a relatively easy hike of just under a mile with only moderate elevation gain to Hidden Lake, one of the largest hike-in alpine lakes in the region.