Overview
Mystic Lake sits in the Absaroka-Beartooth Wilderness above the Stillwater River valley in Gallatin National Forest, offering a beautiful mountain lake destination with views of the surrounding peaks. The 6.2-mile out-and-back is rated moderate-hard, climbing 1,200 feet from the East Rosebud Creek Trailhead.
The lake is accessible by Beartooth area standards, making it one of the more achievable alpine lake destinations in this otherwise demanding high-altitude wilderness. The wildflower meadows surrounding the lake are excellent in July and early August.
The Beartooth High Route provides a more demanding alternative for those wanting the full Beartooth plateau experience.
The Route
From the trailhead near Roscoe, the trail climbs through mixed conifer forest before breaking into open terrain and approaching the lake basin. The lake is surrounded by open meadows on the lower shore and rocky terrain on the upper shore. Multiple vantage points around the lake offer different perspectives on the surrounding peaks.
When to Visit
June through October. The lake basin is typically snow-free by late June. July is peak wildflower season. September brings excellent visibility and fall colors at lower elevations on the descent.
Practical Details
Vault toilet at the trailhead. Bear spray is essential. Water from the lake must be treated. Dispersed camping is permitted in the wilderness. Cell service is unavailable. Review Leave No Trace principles.
Getting There
From Roscoe, Montana, drive south on East Rosebud Road to the trailhead. The road is paved most of the way. Total drive from Billings is approximately 1.5 hours.
Leave No Trace
This trail receives enough use that following Leave No Trace principles is important for preserving the experience for future visitors. Stay on the marked trail to prevent erosion. Pack out all waste. Avoid camping within 200 feet of water sources or the trail. Use existing fire rings only where campfires are permitted, and check current fire restrictions at checking conditions before you go before any visit. The trail and surrounding terrain remain in good condition because previous visitors have respected these norms.
Safety Considerations
The moderate-hard rating reflects the trail's general character under typical conditions. Weather, seasonal snow, and trail conditions can change the experience significantly. Carry the 10 Essentials on any full-day outing. Inform someone of your plans and expected return time before heading out, particularly on longer or more remote trails. Cell service varies throughout Gallatin National Forest and may be unreliable in canyon bottoms or remote terrain.