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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

Muddy Branch Greenway Trail

Ends at Lake Halcyon
Camp 4 mi away

13.4 mi of trails · 893 ft climb · 392 ft high point

MD · OpenStreetMap contributors

About Elevation Highlights Map Camp near here More hikes

About this hike

This 13.4-mile trail network reaches Lake Halcyon and passes near Rio Washingtonian Lake and Inspiration Lake with 893 feet of climb.

Elevation

771 ft of gain and 893 ft of descent.

Camp near here

The closest places to sleep, measured from the trailhead.

See all on the map

4.0 mi from the trailhead
Swains Lock Hiker-Biker Campsite
Campground · MD

More hikes nearby

Ranked the same way, within twenty-five miles.

15 mi from you
Western Ridge Trail
- Summits Linnean Hill
- Inside Rock Creek Park
- Camp 1 mi away
5.6 mi of trails · 946 ft climb · Very hard
Rock Creek Park · Camp 1 mi away

Elevation along the trail from the start. Source: USGS 3DEP.

Highlights

What the trail reaches, measured from the start.

Lake HalcyonDestination
Rio Washingtonian LakeNearby
Inspiration LakeNearby

Nearby reading

NIST stone test wall
Lakelands, Gaithersburg, Maryland
Lakelands Park Middle School
Montgomery County Alcohol Beverage Services
Gaithersburg, Maryland

Map

The route at the trailhead. 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: 13.4 mi
Shape: Trail network
Gain: 771 ft
Descent: 893 ft
High point: 392 ft
Low point: 167 ft
Managed by: OpenStreetMap contributors
State: MD
Camps within 15 mi: 15
Trailhead: 39.0769° N · 77.2896° W

Get directions Open the map

4.0 mi from the trailhead

Swains Lock Hiker-Biker Campsite

Campground

5.8 mi from the trailhead

Horsepen Branch Hiker-Biker Overnight (HBO) Campsite

Campground

15 mi from you

Glover-Archbold Trail

Summits Georgetown Heights
Inside Rock Creek Park
Camp 3 mi away

3.3 mi of trails · 437 ft climb · Moderate

Rock Creek Park · Camp 3 mi away

Valley Trail

Summits Linnean Hill
Inside Rock Creek Park
Camp under a mile away

5.8 mi of trails · 743 ft climb · Very hard

Rock Creek Park · Camp under a mile away

Northern Peaks Trail

Summits Sugarloaf Mountain
1,222 ft of climbing
Camp 4 mi away

5.3 mi loop · 1,222 ft climb

MD · Camp 4 mi away

Bike Trail #5

Summits Linnean Hill
Inside Rock Creek Park
Camp 2 mi away

1.8 mi one way · 42 ft climb · Very hard

Rock Creek Park · Camp 2 mi away

Lovers Lane Trail

Summits Lees Hill
Inside Rock Creek Park
Camp 4 mi away

0.1 mi one way · 78 ft climb · Very hard

Rock Creek Park · Camp 4 mi away

More like this

Hikes that read like this one, wherever they are.

Green Trail
- Ends at Lake Roland
1.1 mi of trails · 94 ft climb
MD
Blue Trail
- Ends at Herrington Manor Recreation Area Reservoir
2.9 mi of trails · 314 ft climb
MD
Blue Trail
- Ends at Herrington Manor Recreation Area Reservoir
2.4 mi of trails · 233 ft climb
MD
Lakeside Loop Trail
- Ends at Lake Habeeb
5.3 mi of trails · 300 ft climb
MD · Camp 8 mi away

Weather

7-day forecast

Today88°70°Scattered Showers And Thunderstorms
Fri84°62°Mostly Sunny
Sat79°

65°

Partly Sunny

Sun84°64°Partly Sunny

Mon74°61°Chance Rain Showers

Tue71°58°Chance Rain Showers

Wed70°58°Chance Rain Showers

Today: Scattered Showers And Thunderstorms · wind 6 mph SW

National Weather Service · refreshed hourly

Signal

Cell coverage here

VerizonLTE · Fair
AT&TLTE · Fair
T-MobileLTE · Fair

FCC coverage data · signal varies in remote terrain