Spread across 6.3 million acres, Humboldt-Toiyabe National Forest is the largest in the continental United States — and it's nothing like a single, unified forest. Instead it's a scattered constellation of 29 separate forest parcels, split into seven ranger districts and 18 wilderness areas, running from the Sierra Nevada near Lake Tahoe down to the outskirts of Las Vegas and up to the Oregon and Idaho borders. Think of it as a chain of forested islands, a bit like Arizona's sky islands.

The scale is hard to overstate. One popular trailhead, Cathedral Rock, sits less than an hour from the Las Vegas Strip — while reaching the Jarbidge Wilderness near Idaho means nearly nine hours of driving north. Between those extremes you get 56 developed campgrounds and more than 2,000 miles of hiking trails.

Near Las Vegas, the Spring Mountains National Recreation Area is the local showpiece. Mount Charleston offers summer hiking and a small ski scene in winter. The steep but rewarding Cathedral Rock Trail covers about three miles with aspen colour peaking in autumn and bench-seated views at the top. On the range's western side, the 6.3-mile Bristlecone Trail loops up to stands of bristlecone pines, some of the oldest living trees on Earth — individuals can top 5,000 years.

Around Lake Tahoe, the Carson Ranger District carries sections of both the Pacific Crest Trail and the 170-mile Tahoe Rim Trail. A highlight is Galena Falls, reachable as a day hike of just under five miles above the tree line, with views over lapis-blue Tahoe framed by conifers.

Further afield, northern Nevada hides the good stuff. Lamoille Canyon in the Ruby Mountains has been called Nevada's answer to Yosemite: a dramatic scenic drive (open May through October), high alpine lakes, elk, bighorn sheep, and the 40-mile Ruby Crest National Recreation Trail, a four-day summer trek or an ambitious winter ski route. Near the Idaho border, the roadless Jarbidge Wilderness offers the 26-mile East Fork Jarbidge River Trail through a deep canyon, plus wildflower displays across Copper Basin in June and July.

On the California side, along Highway 365 between Tahoe and Yosemite, the little-visited Virginia Lakes Basin draws anglers and hikers to trout-filled waters, and the nearby Buckeye Hot Springs offers rock-lined pools beside a freezing creek — hot soak, cold plunge, repeat.

Why should travellers care? Humboldt-Toiyabe turns the space between Vegas and Tahoe — a drive most people do without stopping — into a destination in itself. It suits road-trippers and hikers who want variety without crowds: desert-edge trails, alpine lakes, ancient pines and genuinely remote wilderness, often within a couple hours' drive of a major city.