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© 2026 Roaming.Camp · Data from NPS, Recreation.gov, BLM, USFS, NWS, and the FCC.Operating on ceded ancestral land.Photography via Unsplash.

Leave it better than you found it.

Hike

Crystal Rock Trail

Passes Little Seneca Lake

5.2 mi out & back · 494 ft gain · 535 ft high point

From Lot #1 via the Black Hill Trail, the Hamilton Trail, the Cabin Branch Trail, and the Hard Rock Trail (2.1 mi)

MD · OpenStreetMap contributors

Elevation Highlights Map Camp near here More hikes

Elevation

494 ft of gain round trip.

Camp near here

The closest places to sleep, measured from the trailhead.

See all on the map

9.5 mi from the trailhead
Indian Flats Hiker-Biker Campsite
Campground
9.5 mi from the trailhead

More hikes nearby

Ranked the same way, within twenty-five miles.

23 mi from you
Bike Trail #5
- Summits Jackson Hill
- Inside Rock Creek Park
- Camp 2 mi away
4.1 mi out & back · 249 ft gain · Very hard
Rock Creek Park · Camp 2 mi away

Out: 120 ft up, returns the same way. Source: USGS 3DEP.

Highlights

What the trail reaches, measured from the start.

Little Seneca LakeAlong the way · 0.2 mi in

Map

The hike from its start, the approach dashed. Drag with two fingers, or hold a key to zoom.

Trail data: USFS, NPS, © OpenStreetMap contributors (ODbL). Elevation: USGS 3DEP via Mapzen terrain tiles. Nearby reading: Wikipedia. Download the trail and feature data.

At a glance

Length: 5.2 mi
Shape: Out & back
Gain: 494 ft round trip
High point: 535 ft
Low point: 386 ft
Managed by: OpenStreetMap contributors
State: MD
Camps within 15 mi: 14
Start: Lot #1
Trailhead: 39.1964° N · 77.2913° W

Get directions Open the map

Indian Flats Hiker-Biker Campsite

Campground · MD

10.5 mi from the trailhead

Horsepen Branch Hiker-Biker Campsite

Campground · MD

8 mi from you

Northern Peaks Trail

Summits Sugarloaf Mountain
1,225 ft of climbing
Camp 4 mi away

5.3 mi loop · 1,225 ft gain

MD · Camp 4 mi away

Foot Trail #7

Summits Linnean Hill
Inside Rock Creek Park
Camp 2 mi away

0.4 mi out & back · 81 ft gain · Moderate

Rock Creek Park · Camp 2 mi away

Patowmack Canal Trail

Ends at Great Falls
Inside Great Falls Park
Camp 2 mi away

3.2 mi out & back · 21 ft gain · Hard

Great Falls Park · Camp 2 mi away

Bike Trail #4

Summits Linnean Hill
Inside Rock Creek Park
Camp 2 mi away

0.8 mi out & back · 16 ft gain · Very hard

Rock Creek Park · Camp 2 mi away

Fort Reno Park Path

Summits Point Reno
Inside Rock Creek Park
Camp 2 mi away

0.3 mi out & back · Hard

Rock Creek Park · Camp 2 mi away

Weather

7-day forecast

Today72°53°Sunny
Sat69°56°Slight Chance Light Rain
Sun67°57°Chance Light Rain
Mon

70°57°

Mostly Cloudy

Tue73°56°Partly Sunny

Wed77°60°Mostly Sunny

Thu78°62°Partly Sunny

Today: Sunny · wind 20 mph N

National Weather Service · refreshed hourly

Signal

Cell coverage here

VerizonLTE · Fair
AT&TLTE · Poor
T-Mobile5G · Good

FCC coverage data · signal varies in remote terrain