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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

Patapsco Howard County Thru Trail

Passes a viewpoint
4,272 ft of climbing

31.0 mi one way · 4,272 ft gain · 462 ft high point · Very hard

MD · OpenStreetMap contributors

About Elevation Highlights Map More hikes

About this hike

This one-way route covers 31 miles through Maryland with 4,272 feet of total climb.

Elevation

4,272 ft of gain and 3,932 ft of descent.

More hikes nearby

Ranked the same way, within twenty-five miles.

25 mi from you
Valley Trail
- Passes Linnean Hill
- Inside Rock Creek Park
- 1,297 ft of climbing
12.0 mi out & back · 1,297 ft gain · Hard
Rock Creek Park · Camp 2 mi away

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

Highlights

What the trail reaches, measured from the start.

Avalon DamAlong the way · 0.5 mi in
St. Mary's OverlookAlong the way · 6.6 mi in
Former AltarAlong the way · 6.7 mi in
Grotto OverlookAlong the way · 6.8 mi in
Shrine OverlookAlong the way · 6.8 mi in
Cemetery AltarAlong the way · 6.8 mi in
Cemetery OverlookAlong the way · 6.9 mi in
ViewpointAlong the way · 8.8 mi in
Valley OverlookAlong the way · 12.7 mi in
ViewpointAlong the way · 13.0 mi in
Patapsco River Bridge #3109Along the way · 13.1 mi in
Putney's BridgeAlong the way · 21.8 mi in

Nearby reading

Elmonte
Mt. Hebron High School
Camel's Den Cave
Linnwood (Ellicott City, 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: 31.0 mi
Shape: One way
Gain: 4,272 ft
Descent: 3,932 ft
High point: 462 ft
Low point: 36 ft
Difficulty: Very hardFrom 31.0 mi and 4,272 ft of climbing
Managed by: OpenStreetMap contributors
State: MD
Camps within 15 mi: 0
Trailhead: 39.2273° N · 76.7259° W

Get directions Open the map

25 mi from you

Boardwalk

Ends at a viewpoint
Inside Kenilworth Park & Aquatic Gardens
Camp 2 mi away

5.7 mi out & back · 90 ft gain · Easy

Kenilworth Park & Aquatic Gardens · Camp 2 mi away

Ponds Trail

Ends at a viewpoint
Inside Kenilworth Park & Aquatic Gardens
Camp 2 mi away

5.3 mi out & back · 87 ft gain · Easy

Kenilworth Park & Aquatic Gardens · Camp 2 mi away

Loggers Trail

Summits Oregon Ridge

3.5 mi loop · 524 ft gain · Moderate

MD

Lake Elkhorn Loop

Ends at Lake Elkhorn

9.5 mi loop · 294 ft gain · Moderate

MD

Elkhorn Branch Trail

Ends at Lake Elkhorn

8.0 mi out & back · 299 ft gain · Moderate

MD

More like this

Hikes that read like this one, wherever they are.

Patapsco Traverse (south hiking)
- Passes Cascade Falls
- 5,223 ft of climbing
32.1 mi one way · 5,223 ft gain · Very hard
MD
Patapsco Traverse (north hiking)
- Passes Gnome Village
- 3,626 ft of climbing
32.0 mi one way · 3,626 ft gain · Very hard
MD
Panther Trail
4.0 mi out & back · 709 ft gain · Moderate
MD
Catoctin National Recreation Trail
- Passes White Rock
- 4,912 ft of climbing
- Camp under a mile away
26.7 mi one way · 4,696 ft gain · Very hard
MD · Camp under a mile away

Weather

7-day forecast

Today47°35°Mostly Cloudy
Sat50°38°Partly Sunny
Sun52°35°Partly Sunny
Mon53°33°Sunny
Tue56°33°Sunny
Wed60°34°Sunny
Thu62°36°Sunny

Today: Mostly Cloudy · wind 10 to 14 mph N

National Weather Service · refreshed hourly

Signal

Cell coverage here

VerizonLTE · Excellent
AT&TLTE · Excellent
T-Mobile5G · Excellent

FCC coverage data · signal varies in remote terrain