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Routes
Hiking trails & Routes
United States
Virginia
Fairfax County
Great Falls

Difficult Run, Ridge and River Trail Loop

Moderate

5.0

(2723)

18,582

hikers

Difficult Run, Ridge and River Trail Loop

02:22

8.65km

140m

Hiking

Hike the Difficult Run, Ridge and River Trail Loop for 5.4 miles of varied terrain, river views, and moderate difficulty in Great Falls Park

Last updated: February 26, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Waypoints

A

Start point

Parking

Get Directions

1

570 m

Boardwalk Through Swamp, Great Falls Park

Highlight • Trail

low bridge for crossing swamp

Tip by

1.04 km

Great Falls Park

Nature Reserve

3

3.61 km

Difficult Run

Highlight • River

All told, Difficult Run flows almost 16 miles before finally reaching the Potomac River, right here. This stream hosts a lot of wildlife, and when traversing Great Falls Park it runs through a steep-walled gorge and tumbles into waterfalls.

Tip by

4

3.73 km

Difficult Run Trail

Highlight • Trail

5

6.99 km

View over the Mather Gorge

Highlight • Viewpoint

Great spot to see the full length of the Mather Gorge.

Tip by

B

8.65 km

End point

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Way Types & Surfaces

Way Types

5.55 km

3.03 km

< 100 m

Surfaces

5.46 km

2.69 km

436 m

< 100 m

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (90 m)

Lowest point (30 m)

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Weather

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Today

Thursday 7 May

19°C

12°C

21 %

Additional weather tips

Max wind speed: 14.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

Where is the best place to park for the Difficult Run, Ridge and River Trail Loop?

The most common starting point for this loop is the Difficult Run parking area, which offers a quieter alternative to the main Great Falls Park entrance. This trailhead provides direct access to the Difficult Run Trail, leading you into the loop.

Are there any fees or permits required to hike this trail?

Yes, this trail is located within Great Falls Park, which is part of the National Park Service. An entrance fee is required to access the park. You can find current fee information and details on passes at the official NPS website: nps.gov.

Is the Difficult Run, Ridge and River Trail Loop dog-friendly?

Yes, dogs are generally allowed on trails within Great Falls Park, including this loop. However, they must be kept on a leash at all times. Please remember to pack out any waste.

What is the best time of year to hike this loop?

The trail is enjoyable year-round. Fall, particularly late October and early November, offers stunning foliage. Winter provides unobstructed views through the bare trees. Be aware that after heavy rain or during winter, sections can become muddy and slippery.

What is the terrain like on this trail?

The terrain is varied, featuring dirt and rock paths, with some areas requiring navigation over rocky sections and log 'steps.' You'll encounter steep climbs to the ridge and descents towards the Potomac. Parts of the Difficult Run Trail can be narrow and rocky, and the River Trail also has rocky conditions with some easy rock scrambles.

What can I see along the route?

You'll experience diverse scenery, including shaded riverside paths along Difficult Run with small waterfalls, dramatic views of the Potomac River and Mather Gorge, and a small beach where Difficult Run meets the Potomac. You'll also pass the Boardwalk Through Swamp, Great Falls Park.

Are there any challenging sections or hazards to be aware of?

Yes, the trail is rated as moderate. The River Trail section is particularly rocky and includes some rock scrambling. A specific section of the Difficult Run Trail is noted as being less than six inches wide due to a washout, which can be a potential hazard. Steep hills can also become muddy and slippery, especially after rain or in winter.

Does the trail intersect other well-known paths?

Yes, the route also passes through sections of the Potomac Heritage National Scenic Trail (right bank), the Fairfax Cross County Trail, and the Gerry Connolly Cross County Trail. A small portion also overlaps with the Swamp Trail.

How can I avoid crowds on this popular trail?

Starting your hike from the Difficult Run parking area is an excellent way to experience the stunning overlooks of Great Falls with fewer crowds compared to beginning at the main Great Falls Park Visitor Center. Arriving early in the morning can also help you enjoy a more peaceful experience.

Is this trail suitable for experienced hikers?

While rated moderate, experienced hikers will appreciate the varied terrain, rocky sections, and occasional rock scrambles, particularly on the River Trail. The elevation changes and technical footing offer a good workout and engaging experience.

What should I bring for this hike?

Given the rocky and potentially slippery terrain, sturdy hiking shoes with good ankle support are recommended. Bring plenty of water, especially on warmer days, as there is no water available directly on the trail. Sun protection, snacks, and a map or GPS device are also advisable.

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Trail Reviews

Kat
September 24, 2022, VA: Great Falls Park

Great Falls is a series of rapids and waterfalls on the Potomac River, 14 miles (23 km) upstream from Washington, D.C., on the border of Maryland and Virginia. At the Great Falls of the Potomac, the river drops 76 feet in less than a mile. At the same time, the banks narrow from 1000 feet wide to only 60 to 100 feet as the river passes through Mather Gorge. The combination of dropping and narrowing as the river passes over jagged rocks creates a dramatic series of waterfalls and rapids. Great Falls Park was definitely a favorite of mine the last time I was in Maryland. Thus, I was excited to revisit this park. I am fighting off a cold, therefore my mode wasn't gonna be trail running in order to not suppress my leucocytes count by exerting myself. Instead, my intention was to hike... including, as it turns out, a lot of rock scrambling in-between. Fun, fun, fun! And the views are stunning😍! Today (9-24-22) admission to the park was free. Unsurprisingly, there were crowds at the popular viewpoints close to the visitor center.

At some sections not an easy hike. Recommend hiking pole for people with weak knees.

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