Grayback Parallel

Grayback Parallel is a hard out-and-back hike in the Jackson Ranger District of Wyoming's Bridger-Teton National Forest, about 20 miles long with a total elevation gain of 1,622 feet. The trail rises from a low point of 7,064 feet to a high of 8,595 feet, and it is managed by the Forest Service. Summer is the most comfortable time to go. Typical averages from a nearby weather station show July highs around 72°F with lows near 35°F, and the station sits at a similar elevation, so temperatures on the trail run roughly comparable. The station's records also put June and August in the low to mid 70s, while winter highs stay in the mid 20s with lows well below zero. The trail is open from May 1 through October 31. It's a natural-surface route, and the Forest Service allows horses and bikes. Willow Creek, a canoeing spot, lies about a mile away, and the Mumford Creek and Hunter Creek hikes are each within about 2 miles. McCain Cabin, a campground, is about 5.5 miles off.