Sunday Gulch

Overview

Sunday Gulch is the park’s most playful hike: a roughly 3-mile loop that drops from Sylvan Lake into a narrow, boulder-choked gulch where water often runs right over the route. Expect metal handrails, big step-downs, and a short section that feels closer to canyoneering than a casual stroll. After the gulch, the trail eases into open woods and meadows with classic Black Hills views.

What Makes It Unique

The opening quarter-mile (hiked either direction) is the signature: polished granite, cascades, and railings to help negotiate tall steps and slippery rock. It’s the kind of terrain you won’t find on other park trails, and it’s flat-out fun if you like scrambling.

Route & How to Hike It

The loop begins just below the Sylvan Lake dam. Many hikers go counterclockwise to descend the boulder section first; others prefer clockwise to climb it instead (easier on knees for some). Don’t want the whole loop? You can drop down the gulch to where the railings end, then turn around and climb back the way you came.

Scenery & Vibes

• Dramatic granite walls and house-sized boulders
• Small waterfalls and a gurgling creek in the gulch (most scenic in spring or after rain)
• Shaded pine forest and occasional wide views once you’re out of the ravine

Wildlife

Common sightings include squirrels, chipmunks, deer, and a variety of birds (woodpeckers pop up). Snakes are possible in rocky, sunny spots—watch your footing.

Difficulty & Hazards

It’s a strenuous loop for many, thanks to big steps and slick rock where water crosses the trail. Sturdy, grippy footwear is essential. The route is typically not recommended in winter due to ice.

Logistics & Amenities

Start at Sylvan Lake’s day-use area; the trailhead sits behind the dam. You’ll find parking, restrooms, and picnic tables at the lake. Food and other services are close by at Sylvan Lake facilities.

Best Time to Visit

Late spring through fall is best. Arrive early morning to snag parking and enjoy the gulch with fewer people; weekends see more traffic. The gulch is shady (nice on hot days), but post-rain conditions are slick—build in extra time. For photos, morning light plays nicely on the water-polished granite.

Tips

• Go counterclockwise to descend the boulders first; clockwise if you prefer to climb them.
• Wear sticky-soled footwear; expect wet rock and stream crossings.
• Bring water and bug spray—mosquitoes can be active in the gulch.
• Short on time? Hike down to the end of the railings, then return the way you came.