Crevice Creek Trail

Overview

This backcountry route, also known locally as the Crevice Lake Trail, is a moderate out-and-back that delivers big, open views, a quiet lake destination, and frequent wildlife sightings. It’s about 9.1 miles total with roughly 1,614 feet of elevation gain. Expect a net descent on the way to the lake and a sustained climb on the return—save some legs for the way out.

Trail Experience

From the Blacktail Trailhead on Grand Loop Road, the path heads north along Blacktail Deer Creek through mostly open country before dropping into a canyon and reaching a suspension bridge. As you near Crevice Lake, shrubland and riparian pockets break up the wide-open feel. Clear tread and varied scenery make the miles go down easy—until the final climb back to the road reminds you who’s boss. The route also provides access toward the Black Canyon of the Yellowstone, with canyon walls and river-carved geology on full display.

Scenery, Geology, and Wildlife

Alpine valleys, distant peaks, and broad Yellowstone vistas set the tone. The Black Canyon’s dramatic cuts hint at the Yellowstone River’s erosive power, and layered regional rock tells a story of uplift and ancient seas. Wildlife is a real draw here—ground squirrels and yellow-bellied marmots are common, osprey patrol the waterways, antelope frequent the open flats, and grizzlies roam the area. Give all animals space and keep your head on a swivel.

Conditions and Seasonality

Best from May through September. In spring, lingering snow can hang near the start and around the lake, and high, fast water can make fords unsafe or force a detour to a bridge (the reroutes can be steep and pebbly). By early summer the trail typically dries out, wildflowers pop, and the sun gets real—large exposed stretches mean heat and wind are factors. Mid-summer can feel hot; many hikers cool off by the creek.

Tips & Logistics

• Start at the Blacktail Trailhead on Grand Loop Road. Parking is limited—arrive early in peak months.
• Bring plenty of water and sun protection; much of the route is exposed. A filter is smart since Blacktail Deer Creek parallels much of the hike.
• Travel in a group and carry bear spray; this corridor sees grizzly activity.
• Expect the long uphill finish. Trekking poles help, especially on any loose, rerouted sections.
• No dogs on this trail. Backpackers will find designated backcountry sites in the area; permits are required for overnight stays.

Is It Worth It?

If you like open-country hiking with real chances for solitude and wildlife, yes. The lake is pristine (fishing prospects are uncertain), the canyon section is memorable, and the out-and-back return climb adds just enough bite. It’s not the park’s flashiest hike, but it’s a rewarding, under-the-radar day or overnight for prepared hikers.