Enchantments Through-Hike in Larch Season: Permit Logistics and Aasgard Pass Prep

The Enchantments through-hike is 18 miles point to point, and the numbers alone tell you what you're in for: 4,500 feet of gain, a low point of 1,600 feet at the trailhead, and a high point near 7,800 feet before you drop into the Stuart Lake side. This isn't a lake-and-back stroll. You're crossing Aasgard Pass, moving through Colchuck Lake at 3,200 feet, up past Lake Viviane around 4,336 feet, and through the core basin before topping out on the Snow Lakes side near 6,298 feet and climbing further from there. Late September is prime larch season, which means the alpine larches turning gold in the upper basin, and it also means this is one of the most in-demand windows all year for the permit. The Enchantments Through-Hike Permit runs on a lottery workflow and covers the whole zone at $5 per person per night. Core season permits get allocated back in February, so if you don't already have one in hand for this window, your realistic path in is the recreation.gov cancellation and re-release system. Cancelled permits post daily, and persistent daily checking around release times is genuinely how most last-minute hikers get in during larch season. Daily quota for the zone sits at 150, and during the last two weeks of September that quota fills fast because it's the single most popular stretch of the year to see the larches. If you're flexible on direction or start date, checking a few days out from your target gives you more shots at a cancellation than trying to snag something the night before. Direction matters here. Most people go Stuart Lake side up through Aasgard Pass and down to Snow Lakes, front-loading the brutal climb while you're fresh, then finishing with a long descent. Going the other way means a long, grinding climb late in the day when you're tired, which is a common mistake for people who don't think through the elevation profile before committing to a permit. Water along the route is generally consistent since you're moving lake to lake through Colchuck, the core lakes basin, and Snow Lakes, but don't count on any single source being guaranteed reliable this late in the season without checking current conditions closer to your date. Bring a filter and top off at every lake you pass rather than gambling on finding water between them. Expect crisp, cold mornings and nights in late September, with daytime temps still pleasant enough for hiking in a light layer once you're moving. Early snow at the higher elevations near Aasgard Pass and above 6,000 feet is a real possibility this time of year, so pack for winter conditions at altitude even if the trailhead feels like fall. Camp planning inside the zone should account for the fact that you're covering serious mileage and gain in one push if you're doing this as an overnight rather than a multi-night trip. Budget extra time for Aasgard Pass itself — the elevation change through that section is steep and slow going, especially with a full pack, and rushing it in low light is where people get into trouble. Common mistakes for this window: underestimating how cold it gets once the sun drops behind the peaks, not checking recreation.gov obsessively enough for cancellations, and picking a direction that puts the hardest climbing at the end of a long day. Get those three things right and the larch season crossing lives up to the hype. — Compiled by the PermitSnag team from agency info, ranger updates, and public trip logs.