Ask AllTrails which trail defines hiking in Red River, and the answer comes back the same way every time: Lost Lake Trail, the most popular — and most difficult — hike in town, holding a 4.7-star rating from more than 320 reviews. It is the hike Red River locals recommend first and the one visitors remember longest.
The numbers tell part of the story: about 7 miles out and back with roughly 935 feet of elevation gain, taking most hikers three to three and a half hours. But Lost Lake is not a numbers hike. The trail climbs through spruce and fir forest into high alpine country, past wildflower meadows in July and glowing aspen groves in late September, before the trees break and the lake appears — a glassy alpine tarn cupped under craggy peaks, cold and impossibly blue.
The lake is the destination, but it does not have to be the turnaround. Strong hikers can push on toward Horseshoe Lake and, for a very long day, the summit of Wheeler Peak itself — the 13,161-foot roof of New Mexico — via the high connecting trails. That extension turns a morning hike into a genuine expedition, so plan it as its own day, not an afterthought.
A few honest cautions. The best window is May through October; snow can linger on the high sections into early summer, and afternoon thunderstorms are a real hazard above treeline — start early and be heading down by midday. The road to the trailhead is rough in spots, so take it slow and leave the low-clearance rental at the cabin. Bring layers, bring more water than you think you need, and remember you are hiking well above 10,000 feet, where the air is thin and the weather changes fast.
Dogs are welcome on a leash, which makes Lost Lake a favorite for hikers who bring the whole family, four-legged members included. Go on a weekday morning for the quietest version, and you may have the far shore of the lake entirely to yourself.
Every mountain town has a signature hike. In Red River, it is the trail to the lost lake — and once you have stood on its shore, you will understand why nobody here calls it lost at all.